./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8 --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 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:57:23,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:57:23,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:57:23,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:57:23,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:57:23,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:57:23,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:57:23,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:57:23,648 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:57:23,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:57:23,656 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:57:23,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:57:23,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:57:23,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:57:23,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:57:23,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:57:23,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:57:23,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:57:23,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:57:23,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:57:23,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:57:23,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:57:23,677 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:57:23,679 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:57:23,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:57:23,685 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:57:23,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:57:23,687 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:57:23,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:57:23,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:57:23,690 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:57:23,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:57:23,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:57:23,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:57:23,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:57:23,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:57:23,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:57:23,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:57:23,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:57:23,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:57:23,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:57:23,701 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:57:23,741 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:57:23,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:57:23,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:57:23,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:57:23,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:57:23,744 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:57:23,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:57:23,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:57:23,745 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:57:23,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:57:23,746 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:57:23,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:57:23,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:57:23,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:57:23,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:57:23,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:57:23,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:57:23,748 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:57:23,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:57:23,748 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:57:23,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:57:23,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:57:23,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:57:23,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:57:23,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:23,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:57:23,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:57:23,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:57:23,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:57:23,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:57:23,751 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:57:23,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:57:23,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:57:23,752 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-16 11:57:24,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:57:24,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:57:24,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:57:24,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:57:24,057 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:57:24,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-16 11:57:24,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/data/60dc104b8/4fa77f9e927b45ef9d3bad824149bab6/FLAG03882101a [2022-11-16 11:57:24,615 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:57:24,615 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-16 11:57:24,623 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/data/60dc104b8/4fa77f9e927b45ef9d3bad824149bab6/FLAG03882101a [2022-11-16 11:57:24,644 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/data/60dc104b8/4fa77f9e927b45ef9d3bad824149bab6 [2022-11-16 11:57:24,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:57:24,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:57:24,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:24,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:57:24,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:57:24,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611ed3ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24, skipping insertion in model container [2022-11-16 11:57:24,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:57:24,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:57:24,894 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-16 11:57:24,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:24,912 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:57:24,938 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-16 11:57:24,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:57:24,958 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:57:24,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24 WrapperNode [2022-11-16 11:57:24,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:57:24,960 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:24,960 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:57:24,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:57:24,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:24,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,053 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 214 [2022-11-16 11:57:25,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:57:25,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:57:25,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:57:25,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:57:25,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,119 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:57:25,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:57:25,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:57:25,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:57:25,131 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (1/1) ... [2022-11-16 11:57:25,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:57:25,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:25,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:57:25,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:57:25,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:57:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:57:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:57:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:57:25,252 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:57:25,253 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:57:25,253 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:57:25,255 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:57:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:57:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:57:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:57:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:57:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:57:25,258 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:57:25,383 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:57:25,385 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:57:25,973 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:57:25,994 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:57:26,001 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:57:26,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:26 BoogieIcfgContainer [2022-11-16 11:57:26,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:57:26,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:57:26,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:57:26,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:57:26,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:57:24" (1/3) ... [2022-11-16 11:57:26,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd11d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:26, skipping insertion in model container [2022-11-16 11:57:26,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:57:24" (2/3) ... [2022-11-16 11:57:26,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd11d72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:57:26, skipping insertion in model container [2022-11-16 11:57:26,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:57:26" (3/3) ... [2022-11-16 11:57:26,019 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-11-16 11:57:26,031 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:57:26,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:57:26,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:57:26,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:57:26,183 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:57:26,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 273 transitions, 562 flow [2022-11-16 11:57:26,366 INFO L130 PetriNetUnfolder]: 19/271 cut-off events. [2022-11-16 11:57:26,367 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:57:26,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 271 events. 19/271 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 488 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 176. Up to 2 conditions per place. [2022-11-16 11:57:26,377 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 273 transitions, 562 flow [2022-11-16 11:57:26,395 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 262 transitions, 536 flow [2022-11-16 11:57:26,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:57:26,423 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6d9e93f4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:57:26,423 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 11:57:26,545 INFO L130 PetriNetUnfolder]: 19/261 cut-off events. [2022-11-16 11:57:26,545 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:57:26,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:26,547 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:26,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1200900486, now seen corresponding path program 1 times [2022-11-16 11:57:26,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:26,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712157888] [2022-11-16 11:57:26,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:26,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:27,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:27,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:27,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712157888] [2022-11-16 11:57:27,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712157888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:27,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:27,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:57:27,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673355164] [2022-11-16 11:57:27,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:27,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:57:27,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:57:27,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:57:27,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 273 [2022-11-16 11:57:27,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 262 transitions, 536 flow. Second operand has 2 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:27,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:27,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 273 [2022-11-16 11:57:27,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:27,214 INFO L130 PetriNetUnfolder]: 5/248 cut-off events. [2022-11-16 11:57:27,214 INFO L131 PetriNetUnfolder]: For 9/10 co-relation queries the response was YES. [2022-11-16 11:57:27,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 248 events. 5/248 cut-off events. For 9/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 446 event pairs, 0 based on Foata normal form. 18/250 useless extension candidates. Maximal degree in co-relation 169. Up to 5 conditions per place. [2022-11-16 11:57:27,219 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 4 selfloop transitions, 0 changer transitions 3/248 dead transitions. [2022-11-16 11:57:27,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 248 transitions, 516 flow [2022-11-16 11:57:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:57:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:57:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 526 transitions. [2022-11-16 11:57:27,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9633699633699634 [2022-11-16 11:57:27,249 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 526 transitions. [2022-11-16 11:57:27,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 526 transitions. [2022-11-16 11:57:27,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:27,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 526 transitions. [2022-11-16 11:57:27,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 263.0) internal successors, (526), 2 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:27,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:27,283 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:27,285 INFO L175 Difference]: Start difference. First operand has 250 places, 262 transitions, 536 flow. Second operand 2 states and 526 transitions. [2022-11-16 11:57:27,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 248 transitions, 516 flow [2022-11-16 11:57:27,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 248 transitions, 508 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:27,305 INFO L231 Difference]: Finished difference. Result has 247 places, 245 transitions, 494 flow [2022-11-16 11:57:27,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=494, PETRI_PLACES=247, PETRI_TRANSITIONS=245} [2022-11-16 11:57:27,315 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, -3 predicate places. [2022-11-16 11:57:27,316 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 245 transitions, 494 flow [2022-11-16 11:57:27,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 257.5) internal successors, (515), 2 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:27,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:27,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:27,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:57:27,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:27,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:27,320 INFO L85 PathProgramCache]: Analyzing trace with hash 698699565, now seen corresponding path program 1 times [2022-11-16 11:57:27,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:27,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500549260] [2022-11-16 11:57:27,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:27,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:27,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:27,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500549260] [2022-11-16 11:57:27,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500549260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:27,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:27,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:57:27,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533823364] [2022-11-16 11:57:27,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:27,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:57:27,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:27,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:57:27,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:57:27,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 273 [2022-11-16 11:57:27,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 245 transitions, 494 flow. Second operand has 5 states, 5 states have (on average 244.4) internal successors, (1222), 5 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:27,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:27,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 273 [2022-11-16 11:57:27,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:28,052 INFO L130 PetriNetUnfolder]: 5/251 cut-off events. [2022-11-16 11:57:28,052 INFO L131 PetriNetUnfolder]: For 2/3 co-relation queries the response was YES. [2022-11-16 11:57:28,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 251 events. 5/251 cut-off events. For 2/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 440 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 273. Up to 14 conditions per place. [2022-11-16 11:57:28,055 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 16 selfloop transitions, 4 changer transitions 0/249 dead transitions. [2022-11-16 11:57:28,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 249 transitions, 542 flow [2022-11-16 11:57:28,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:57:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:57:28,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1231 transitions. [2022-11-16 11:57:28,059 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9018315018315018 [2022-11-16 11:57:28,060 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1231 transitions. [2022-11-16 11:57:28,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1231 transitions. [2022-11-16 11:57:28,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:28,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1231 transitions. [2022-11-16 11:57:28,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.2) internal successors, (1231), 5 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,068 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,069 INFO L175 Difference]: Start difference. First operand has 247 places, 245 transitions, 494 flow. Second operand 5 states and 1231 transitions. [2022-11-16 11:57:28,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 249 transitions, 542 flow [2022-11-16 11:57:28,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 249 transitions, 542 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:57:28,075 INFO L231 Difference]: Finished difference. Result has 249 places, 246 transitions, 510 flow [2022-11-16 11:57:28,076 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=249, PETRI_TRANSITIONS=246} [2022-11-16 11:57:28,076 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, -1 predicate places. [2022-11-16 11:57:28,077 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 246 transitions, 510 flow [2022-11-16 11:57:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 244.4) internal successors, (1222), 5 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:28,078 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:28,078 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:28,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:57:28,079 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:28,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:28,080 INFO L85 PathProgramCache]: Analyzing trace with hash -742487074, now seen corresponding path program 1 times [2022-11-16 11:57:28,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:28,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596370326] [2022-11-16 11:57:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:28,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:28,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:28,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:28,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:28,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596370326] [2022-11-16 11:57:28,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596370326] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:28,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798285059] [2022-11-16 11:57:28,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:28,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:28,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:28,438 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:28,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:57:28,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:28,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:57:28,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:28,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:28,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:29,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:29,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798285059] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:29,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:29,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-16 11:57:29,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128087347] [2022-11-16 11:57:29,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:29,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:57:29,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:29,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:57:29,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:57:29,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 273 [2022-11-16 11:57:29,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 246 transitions, 510 flow. Second operand has 14 states, 14 states have (on average 243.64285714285714) internal successors, (3411), 14 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:29,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 273 [2022-11-16 11:57:29,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:29,257 INFO L130 PetriNetUnfolder]: 5/260 cut-off events. [2022-11-16 11:57:29,258 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 11:57:29,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 260 events. 5/260 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 431 event pairs, 0 based on Foata normal form. 2/250 useless extension candidates. Maximal degree in co-relation 298. Up to 11 conditions per place. [2022-11-16 11:57:29,262 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 17 selfloop transitions, 11 changer transitions 0/256 dead transitions. [2022-11-16 11:57:29,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 256 transitions, 588 flow [2022-11-16 11:57:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:57:29,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:57:29,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2681 transitions. [2022-11-16 11:57:29,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8927738927738927 [2022-11-16 11:57:29,269 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2681 transitions. [2022-11-16 11:57:29,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2681 transitions. [2022-11-16 11:57:29,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:29,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2681 transitions. [2022-11-16 11:57:29,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 243.72727272727272) internal successors, (2681), 11 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 273.0) internal successors, (3276), 12 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,286 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 273.0) internal successors, (3276), 12 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,287 INFO L175 Difference]: Start difference. First operand has 249 places, 246 transitions, 510 flow. Second operand 11 states and 2681 transitions. [2022-11-16 11:57:29,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 256 transitions, 588 flow [2022-11-16 11:57:29,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 256 transitions, 582 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:29,294 INFO L231 Difference]: Finished difference. Result has 259 places, 252 transitions, 559 flow [2022-11-16 11:57:29,295 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=559, PETRI_PLACES=259, PETRI_TRANSITIONS=252} [2022-11-16 11:57:29,298 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 9 predicate places. [2022-11-16 11:57:29,298 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 252 transitions, 559 flow [2022-11-16 11:57:29,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 243.64285714285714) internal successors, (3411), 14 states have internal predecessors, (3411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:29,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:29,302 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:29,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:57:29,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_41b6009f-40f2-4410-a470-e9f1f76fba0f/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:29,509 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:29,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:29,510 INFO L85 PathProgramCache]: Analyzing trace with hash -55670530, now seen corresponding path program 2 times [2022-11-16 11:57:29,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:29,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180515222] [2022-11-16 11:57:29,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:29,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:30,353 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:30,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:30,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180515222] [2022-11-16 11:57:30,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180515222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:30,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:30,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:57:30,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570789342] [2022-11-16 11:57:30,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:30,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:30,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:30,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:30,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:30,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:30,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 252 transitions, 559 flow. Second operand has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:30,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:30,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:30,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:31,449 INFO L130 PetriNetUnfolder]: 392/2333 cut-off events. [2022-11-16 11:57:31,452 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-16 11:57:31,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 2333 events. 392/2333 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 18989 event pairs, 120 based on Foata normal form. 1/2118 useless extension candidates. Maximal degree in co-relation 3176. Up to 304 conditions per place. [2022-11-16 11:57:31,473 INFO L137 encePairwiseOnDemand]: 252/273 looper letters, 127 selfloop transitions, 22 changer transitions 15/363 dead transitions. [2022-11-16 11:57:31,473 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 363 transitions, 1119 flow [2022-11-16 11:57:31,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:57:31,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:57:31,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2791 transitions. [2022-11-16 11:57:31,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864187094956325 [2022-11-16 11:57:31,482 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2791 transitions. [2022-11-16 11:57:31,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2791 transitions. [2022-11-16 11:57:31,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:31,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2791 transitions. [2022-11-16 11:57:31,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.69230769230768) internal successors, (2791), 13 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,515 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,515 INFO L175 Difference]: Start difference. First operand has 259 places, 252 transitions, 559 flow. Second operand 13 states and 2791 transitions. [2022-11-16 11:57:31,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 363 transitions, 1119 flow [2022-11-16 11:57:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 363 transitions, 1110 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-16 11:57:31,525 INFO L231 Difference]: Finished difference. Result has 278 places, 266 transitions, 693 flow [2022-11-16 11:57:31,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=693, PETRI_PLACES=278, PETRI_TRANSITIONS=266} [2022-11-16 11:57:31,526 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 28 predicate places. [2022-11-16 11:57:31,526 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 266 transitions, 693 flow [2022-11-16 11:57:31,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:31,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:31,528 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:31,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:57:31,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:31,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:31,530 INFO L85 PathProgramCache]: Analyzing trace with hash 216873814, now seen corresponding path program 3 times [2022-11-16 11:57:31,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:31,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462061902] [2022-11-16 11:57:31,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:31,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:32,321 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:32,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:32,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462061902] [2022-11-16 11:57:32,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462061902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:32,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:32,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:57:32,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821479791] [2022-11-16 11:57:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:32,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:32,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:32,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:32,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:32,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 266 transitions, 693 flow. Second operand has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:32,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:32,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:32,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:33,978 INFO L130 PetriNetUnfolder]: 732/4513 cut-off events. [2022-11-16 11:57:33,979 INFO L131 PetriNetUnfolder]: For 1370/1404 co-relation queries the response was YES. [2022-11-16 11:57:33,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7476 conditions, 4513 events. 732/4513 cut-off events. For 1370/1404 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 43414 event pairs, 250 based on Foata normal form. 15/4083 useless extension candidates. Maximal degree in co-relation 7458. Up to 525 conditions per place. [2022-11-16 11:57:34,017 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 160 selfloop transitions, 26 changer transitions 16/403 dead transitions. [2022-11-16 11:57:34,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 403 transitions, 1672 flow [2022-11-16 11:57:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:57:34,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:57:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2793 transitions. [2022-11-16 11:57:34,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7869822485207101 [2022-11-16 11:57:34,028 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2793 transitions. [2022-11-16 11:57:34,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2793 transitions. [2022-11-16 11:57:34,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:34,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2793 transitions. [2022-11-16 11:57:34,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.84615384615384) internal successors, (2793), 13 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,050 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,050 INFO L175 Difference]: Start difference. First operand has 278 places, 266 transitions, 693 flow. Second operand 13 states and 2793 transitions. [2022-11-16 11:57:34,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 403 transitions, 1672 flow [2022-11-16 11:57:34,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 403 transitions, 1620 flow, removed 16 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:34,069 INFO L231 Difference]: Finished difference. Result has 292 places, 280 transitions, 866 flow [2022-11-16 11:57:34,070 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=866, PETRI_PLACES=292, PETRI_TRANSITIONS=280} [2022-11-16 11:57:34,070 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 42 predicate places. [2022-11-16 11:57:34,071 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 280 transitions, 866 flow [2022-11-16 11:57:34,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,072 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:34,073 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:34,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:57:34,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:34,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash 914233240, now seen corresponding path program 4 times [2022-11-16 11:57:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:34,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440094175] [2022-11-16 11:57:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:34,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:34,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440094175] [2022-11-16 11:57:34,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440094175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:34,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:34,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:57:34,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390520185] [2022-11-16 11:57:34,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:34,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:34,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:34,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:34,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 280 transitions, 866 flow. Second operand has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:34,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:34,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:34,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:36,646 INFO L130 PetriNetUnfolder]: 819/4866 cut-off events. [2022-11-16 11:57:36,646 INFO L131 PetriNetUnfolder]: For 4289/4334 co-relation queries the response was YES. [2022-11-16 11:57:36,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9341 conditions, 4866 events. 819/4866 cut-off events. For 4289/4334 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 47946 event pairs, 284 based on Foata normal form. 18/4460 useless extension candidates. Maximal degree in co-relation 9315. Up to 695 conditions per place. [2022-11-16 11:57:36,696 INFO L137 encePairwiseOnDemand]: 252/273 looper letters, 141 selfloop transitions, 40 changer transitions 15/397 dead transitions. [2022-11-16 11:57:36,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 397 transitions, 1958 flow [2022-11-16 11:57:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:57:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:57:36,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2578 transitions. [2022-11-16 11:57:36,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7869352869352869 [2022-11-16 11:57:36,704 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2578 transitions. [2022-11-16 11:57:36,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2578 transitions. [2022-11-16 11:57:36,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:36,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2578 transitions. [2022-11-16 11:57:36,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 214.83333333333334) internal successors, (2578), 12 states have internal predecessors, (2578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,734 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,743 INFO L175 Difference]: Start difference. First operand has 292 places, 280 transitions, 866 flow. Second operand 12 states and 2578 transitions. [2022-11-16 11:57:36,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 397 transitions, 1958 flow [2022-11-16 11:57:36,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 397 transitions, 1893 flow, removed 21 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:36,767 INFO L231 Difference]: Finished difference. Result has 303 places, 303 transitions, 1209 flow [2022-11-16 11:57:36,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1209, PETRI_PLACES=303, PETRI_TRANSITIONS=303} [2022-11-16 11:57:36,771 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 53 predicate places. [2022-11-16 11:57:36,771 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 303 transitions, 1209 flow [2022-11-16 11:57:36,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:36,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:36,777 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:36,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:57:36,777 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:36,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:36,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2009755404, now seen corresponding path program 5 times [2022-11-16 11:57:36,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:36,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852795302] [2022-11-16 11:57:36,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:36,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:37,529 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:37,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:37,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852795302] [2022-11-16 11:57:37,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852795302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:37,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:37,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:57:37,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652621220] [2022-11-16 11:57:37,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:37,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:57:37,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:57:37,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:57:37,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:37,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 303 transitions, 1209 flow. Second operand has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:37,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:37,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:39,598 INFO L130 PetriNetUnfolder]: 889/5686 cut-off events. [2022-11-16 11:57:39,598 INFO L131 PetriNetUnfolder]: For 8134/8212 co-relation queries the response was YES. [2022-11-16 11:57:39,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11866 conditions, 5686 events. 889/5686 cut-off events. For 8134/8212 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 57976 event pairs, 328 based on Foata normal form. 24/5164 useless extension candidates. Maximal degree in co-relation 11834. Up to 760 conditions per place. [2022-11-16 11:57:39,672 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 158 selfloop transitions, 54 changer transitions 14/429 dead transitions. [2022-11-16 11:57:39,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 429 transitions, 2563 flow [2022-11-16 11:57:39,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:57:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:57:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2580 transitions. [2022-11-16 11:57:39,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7875457875457875 [2022-11-16 11:57:39,681 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2580 transitions. [2022-11-16 11:57:39,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2580 transitions. [2022-11-16 11:57:39,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:39,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2580 transitions. [2022-11-16 11:57:39,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 215.0) internal successors, (2580), 12 states have internal predecessors, (2580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,698 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 273.0) internal successors, (3549), 13 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,699 INFO L175 Difference]: Start difference. First operand has 303 places, 303 transitions, 1209 flow. Second operand 12 states and 2580 transitions. [2022-11-16 11:57:39,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 429 transitions, 2563 flow [2022-11-16 11:57:39,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 429 transitions, 2392 flow, removed 44 selfloop flow, removed 5 redundant places. [2022-11-16 11:57:39,732 INFO L231 Difference]: Finished difference. Result has 313 places, 326 transitions, 1567 flow [2022-11-16 11:57:39,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1567, PETRI_PLACES=313, PETRI_TRANSITIONS=326} [2022-11-16 11:57:39,735 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 63 predicate places. [2022-11-16 11:57:39,735 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 326 transitions, 1567 flow [2022-11-16 11:57:39,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 205.9) internal successors, (2059), 10 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:39,736 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:39,736 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:39,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:57:39,737 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:39,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:39,738 INFO L85 PathProgramCache]: Analyzing trace with hash 512631910, now seen corresponding path program 6 times [2022-11-16 11:57:39,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:39,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735584337] [2022-11-16 11:57:39,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:39,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:40,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:40,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735584337] [2022-11-16 11:57:40,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735584337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:40,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:40,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:57:40,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376606287] [2022-11-16 11:57:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:40,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:57:40,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:57:40,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:57:40,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:40,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 326 transitions, 1567 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:40,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:40,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:40,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:42,902 INFO L130 PetriNetUnfolder]: 1189/7404 cut-off events. [2022-11-16 11:57:42,903 INFO L131 PetriNetUnfolder]: For 17787/17988 co-relation queries the response was YES. [2022-11-16 11:57:42,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16987 conditions, 7404 events. 1189/7404 cut-off events. For 17787/17988 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 81550 event pairs, 469 based on Foata normal form. 50/6787 useless extension candidates. Maximal degree in co-relation 16949. Up to 1301 conditions per place. [2022-11-16 11:57:43,008 INFO L137 encePairwiseOnDemand]: 253/273 looper letters, 193 selfloop transitions, 58 changer transitions 27/481 dead transitions. [2022-11-16 11:57:43,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 481 transitions, 3559 flow [2022-11-16 11:57:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:57:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:57:43,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2778 transitions. [2022-11-16 11:57:43,017 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7827557058326289 [2022-11-16 11:57:43,018 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2778 transitions. [2022-11-16 11:57:43,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2778 transitions. [2022-11-16 11:57:43,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:43,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2778 transitions. [2022-11-16 11:57:43,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.69230769230768) internal successors, (2778), 13 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,040 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,040 INFO L175 Difference]: Start difference. First operand has 313 places, 326 transitions, 1567 flow. Second operand 13 states and 2778 transitions. [2022-11-16 11:57:43,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 481 transitions, 3559 flow [2022-11-16 11:57:43,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 481 transitions, 3331 flow, removed 68 selfloop flow, removed 8 redundant places. [2022-11-16 11:57:43,113 INFO L231 Difference]: Finished difference. Result has 324 places, 381 transitions, 2373 flow [2022-11-16 11:57:43,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2373, PETRI_PLACES=324, PETRI_TRANSITIONS=381} [2022-11-16 11:57:43,117 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 74 predicate places. [2022-11-16 11:57:43,118 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 381 transitions, 2373 flow [2022-11-16 11:57:43,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:43,119 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:43,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:57:43,120 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:43,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:43,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1020417836, now seen corresponding path program 7 times [2022-11-16 11:57:43,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:43,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884510945] [2022-11-16 11:57:43,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:43,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:43,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:43,894 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:43,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:43,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884510945] [2022-11-16 11:57:43,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884510945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:43,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:43,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:57:43,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102773600] [2022-11-16 11:57:43,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:43,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:57:43,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:43,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:57:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:57:43,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:43,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 381 transitions, 2373 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:43,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:43,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:43,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:46,715 INFO L130 PetriNetUnfolder]: 1567/9348 cut-off events. [2022-11-16 11:57:46,716 INFO L131 PetriNetUnfolder]: For 30828/31080 co-relation queries the response was YES. [2022-11-16 11:57:46,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22990 conditions, 9348 events. 1567/9348 cut-off events. For 30828/31080 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 108352 event pairs, 516 based on Foata normal form. 62/8514 useless extension candidates. Maximal degree in co-relation 22946. Up to 1607 conditions per place. [2022-11-16 11:57:46,837 INFO L137 encePairwiseOnDemand]: 251/273 looper letters, 262 selfloop transitions, 69 changer transitions 28/565 dead transitions. [2022-11-16 11:57:46,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 565 transitions, 5195 flow [2022-11-16 11:57:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:57:46,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:57:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2775 transitions. [2022-11-16 11:57:46,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7819103972950127 [2022-11-16 11:57:46,848 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2775 transitions. [2022-11-16 11:57:46,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2775 transitions. [2022-11-16 11:57:46,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:46,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2775 transitions. [2022-11-16 11:57:46,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 213.46153846153845) internal successors, (2775), 13 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:46,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:46,869 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:46,870 INFO L175 Difference]: Start difference. First operand has 324 places, 381 transitions, 2373 flow. Second operand 13 states and 2775 transitions. [2022-11-16 11:57:46,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 565 transitions, 5195 flow [2022-11-16 11:57:46,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 565 transitions, 5027 flow, removed 84 selfloop flow, removed 2 redundant places. [2022-11-16 11:57:47,004 INFO L231 Difference]: Finished difference. Result has 341 places, 444 transitions, 3542 flow [2022-11-16 11:57:47,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=2285, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3542, PETRI_PLACES=341, PETRI_TRANSITIONS=444} [2022-11-16 11:57:47,006 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 91 predicate places. [2022-11-16 11:57:47,006 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 444 transitions, 3542 flow [2022-11-16 11:57:47,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:47,008 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:47,008 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:47,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:57:47,008 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:47,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:47,009 INFO L85 PathProgramCache]: Analyzing trace with hash 270558650, now seen corresponding path program 8 times [2022-11-16 11:57:47,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:47,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543142001] [2022-11-16 11:57:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:47,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:47,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:47,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543142001] [2022-11-16 11:57:47,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543142001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:47,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:47,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:57:47,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73684973] [2022-11-16 11:57:47,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:47,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:57:47,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:57:47,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:57:47,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:47,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 444 transitions, 3542 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:47,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:47,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:47,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:50,982 INFO L130 PetriNetUnfolder]: 1777/11104 cut-off events. [2022-11-16 11:57:50,983 INFO L131 PetriNetUnfolder]: For 47632/47968 co-relation queries the response was YES. [2022-11-16 11:57:51,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28307 conditions, 11104 events. 1777/11104 cut-off events. For 47632/47968 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 133094 event pairs, 497 based on Foata normal form. 98/10212 useless extension candidates. Maximal degree in co-relation 28253. Up to 1860 conditions per place. [2022-11-16 11:57:51,098 INFO L137 encePairwiseOnDemand]: 250/273 looper letters, 221 selfloop transitions, 193 changer transitions 29/649 dead transitions. [2022-11-16 11:57:51,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 649 transitions, 6958 flow [2022-11-16 11:57:51,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:57:51,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:57:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2988 transitions. [2022-11-16 11:57:51,106 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7817896389324961 [2022-11-16 11:57:51,106 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2988 transitions. [2022-11-16 11:57:51,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2988 transitions. [2022-11-16 11:57:51,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:51,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2988 transitions. [2022-11-16 11:57:51,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.42857142857142) internal successors, (2988), 14 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,126 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,126 INFO L175 Difference]: Start difference. First operand has 341 places, 444 transitions, 3542 flow. Second operand 14 states and 2988 transitions. [2022-11-16 11:57:51,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 649 transitions, 6958 flow [2022-11-16 11:57:51,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 649 transitions, 6750 flow, removed 104 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:51,387 INFO L231 Difference]: Finished difference. Result has 357 places, 527 transitions, 5474 flow [2022-11-16 11:57:51,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=3400, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=5474, PETRI_PLACES=357, PETRI_TRANSITIONS=527} [2022-11-16 11:57:51,390 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 107 predicate places. [2022-11-16 11:57:51,391 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 527 transitions, 5474 flow [2022-11-16 11:57:51,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:51,392 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:51,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:57:51,393 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:51,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:51,393 INFO L85 PathProgramCache]: Analyzing trace with hash 881226272, now seen corresponding path program 9 times [2022-11-16 11:57:51,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:51,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373314501] [2022-11-16 11:57:51,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:51,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:51,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:51,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373314501] [2022-11-16 11:57:51,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373314501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:51,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:51,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:57:51,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162759209] [2022-11-16 11:57:51,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:51,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:57:51,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:51,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:57:51,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:57:51,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:51,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 527 transitions, 5474 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:51,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:51,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:51,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:55,219 INFO L130 PetriNetUnfolder]: 1807/11338 cut-off events. [2022-11-16 11:57:55,219 INFO L131 PetriNetUnfolder]: For 57441/57991 co-relation queries the response was YES. [2022-11-16 11:57:55,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30044 conditions, 11338 events. 1807/11338 cut-off events. For 57441/57991 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 136994 event pairs, 498 based on Foata normal form. 155/10409 useless extension candidates. Maximal degree in co-relation 29983. Up to 1163 conditions per place. [2022-11-16 11:57:55,339 INFO L137 encePairwiseOnDemand]: 254/273 looper letters, 249 selfloop transitions, 194 changer transitions 25/678 dead transitions. [2022-11-16 11:57:55,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 678 transitions, 8202 flow [2022-11-16 11:57:55,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:57:55,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:57:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2791 transitions. [2022-11-16 11:57:55,345 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864187094956325 [2022-11-16 11:57:55,345 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2791 transitions. [2022-11-16 11:57:55,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2791 transitions. [2022-11-16 11:57:55,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:55,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2791 transitions. [2022-11-16 11:57:55,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.69230769230768) internal successors, (2791), 13 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:55,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:55,360 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:55,360 INFO L175 Difference]: Start difference. First operand has 357 places, 527 transitions, 5474 flow. Second operand 13 states and 2791 transitions. [2022-11-16 11:57:55,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 678 transitions, 8202 flow [2022-11-16 11:57:55,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 678 transitions, 7636 flow, removed 283 selfloop flow, removed 4 redundant places. [2022-11-16 11:57:55,675 INFO L231 Difference]: Finished difference. Result has 369 places, 551 transitions, 6156 flow [2022-11-16 11:57:55,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5142, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=169, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6156, PETRI_PLACES=369, PETRI_TRANSITIONS=551} [2022-11-16 11:57:55,676 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 119 predicate places. [2022-11-16 11:57:55,676 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 551 transitions, 6156 flow [2022-11-16 11:57:55,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:55,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:55,678 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:55,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:57:55,678 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:55,679 INFO L85 PathProgramCache]: Analyzing trace with hash 383513354, now seen corresponding path program 10 times [2022-11-16 11:57:55,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:55,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840676649] [2022-11-16 11:57:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:55,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:57:56,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:56,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840676649] [2022-11-16 11:57:56,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840676649] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:57:56,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:57:56,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:57:56,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450058552] [2022-11-16 11:57:56,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:57:56,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:57:56,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:57:56,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:57:56,288 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:57:56,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 551 transitions, 6156 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:56,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:56,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:57:56,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:57:59,544 INFO L130 PetriNetUnfolder]: 1802/11069 cut-off events. [2022-11-16 11:57:59,544 INFO L131 PetriNetUnfolder]: For 62629/63296 co-relation queries the response was YES. [2022-11-16 11:57:59,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30412 conditions, 11069 events. 1802/11069 cut-off events. For 62629/63296 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 132872 event pairs, 539 based on Foata normal form. 203/10271 useless extension candidates. Maximal degree in co-relation 30346. Up to 961 conditions per place. [2022-11-16 11:57:59,658 INFO L137 encePairwiseOnDemand]: 251/273 looper letters, 252 selfloop transitions, 208 changer transitions 21/688 dead transitions. [2022-11-16 11:57:59,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 688 transitions, 8836 flow [2022-11-16 11:57:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:57:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:57:59,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2790 transitions. [2022-11-16 11:57:59,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7861369399830939 [2022-11-16 11:57:59,663 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2790 transitions. [2022-11-16 11:57:59,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2790 transitions. [2022-11-16 11:57:59,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:59,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2790 transitions. [2022-11-16 11:57:59,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.6153846153846) internal successors, (2790), 13 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,676 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,676 INFO L175 Difference]: Start difference. First operand has 369 places, 551 transitions, 6156 flow. Second operand 13 states and 2790 transitions. [2022-11-16 11:57:59,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 688 transitions, 8836 flow [2022-11-16 11:57:59,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 688 transitions, 8334 flow, removed 183 selfloop flow, removed 7 redundant places. [2022-11-16 11:57:59,896 INFO L231 Difference]: Finished difference. Result has 380 places, 578 transitions, 7101 flow [2022-11-16 11:57:59,897 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=5753, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7101, PETRI_PLACES=380, PETRI_TRANSITIONS=578} [2022-11-16 11:57:59,897 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 130 predicate places. [2022-11-16 11:57:59,897 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 578 transitions, 7101 flow [2022-11-16 11:57:59,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:59,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:59,899 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:59,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:57:59,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:59,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:59,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2017068526, now seen corresponding path program 11 times [2022-11-16 11:57:59,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:59,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686298560] [2022-11-16 11:57:59,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:59,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:58:00,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:00,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686298560] [2022-11-16 11:58:00,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686298560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:00,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:00,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:58:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729732130] [2022-11-16 11:58:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:00,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:58:00,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:58:00,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:58:00,360 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 273 [2022-11-16 11:58:00,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 578 transitions, 7101 flow. Second operand has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:00,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:00,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 273 [2022-11-16 11:58:00,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:04,470 INFO L130 PetriNetUnfolder]: 2002/13043 cut-off events. [2022-11-16 11:58:04,470 INFO L131 PetriNetUnfolder]: For 72617/73230 co-relation queries the response was YES. [2022-11-16 11:58:04,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35086 conditions, 13043 events. 2002/13043 cut-off events. For 72617/73230 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 162655 event pairs, 564 based on Foata normal form. 190/12057 useless extension candidates. Maximal degree in co-relation 35014. Up to 1978 conditions per place. [2022-11-16 11:58:04,650 INFO L137 encePairwiseOnDemand]: 250/273 looper letters, 281 selfloop transitions, 277 changer transitions 36/805 dead transitions. [2022-11-16 11:58:04,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 805 transitions, 11667 flow [2022-11-16 11:58:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:58:04,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 11:58:04,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2988 transitions. [2022-11-16 11:58:04,658 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7817896389324961 [2022-11-16 11:58:04,658 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2988 transitions. [2022-11-16 11:58:04,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2988 transitions. [2022-11-16 11:58:04,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:04,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2988 transitions. [2022-11-16 11:58:04,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 213.42857142857142) internal successors, (2988), 14 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:04,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:04,677 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 273.0) internal successors, (4095), 15 states have internal predecessors, (4095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:04,677 INFO L175 Difference]: Start difference. First operand has 380 places, 578 transitions, 7101 flow. Second operand 14 states and 2988 transitions. [2022-11-16 11:58:04,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 805 transitions, 11667 flow [2022-11-16 11:58:04,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 805 transitions, 10913 flow, removed 256 selfloop flow, removed 7 redundant places. [2022-11-16 11:58:05,012 INFO L231 Difference]: Finished difference. Result has 392 places, 674 transitions, 9241 flow [2022-11-16 11:58:05,013 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=6648, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=9241, PETRI_PLACES=392, PETRI_TRANSITIONS=674} [2022-11-16 11:58:05,014 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 142 predicate places. [2022-11-16 11:58:05,014 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 674 transitions, 9241 flow [2022-11-16 11:58:05,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 205.54545454545453) internal successors, (2261), 11 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:05,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:05,016 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:05,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:58:05,016 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:58:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:05,017 INFO L85 PathProgramCache]: Analyzing trace with hash -466258023, now seen corresponding path program 1 times [2022-11-16 11:58:05,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:05,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860280964] [2022-11-16 11:58:05,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:05,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:58:05,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:05,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860280964] [2022-11-16 11:58:05,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860280964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:05,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:05,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:58:05,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468340717] [2022-11-16 11:58:05,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:05,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:58:05,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:05,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:58:05,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:58:05,566 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 273 [2022-11-16 11:58:05,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 674 transitions, 9241 flow. Second operand has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:05,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:05,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 273 [2022-11-16 11:58:05,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:12,141 INFO L130 PetriNetUnfolder]: 4294/24389 cut-off events. [2022-11-16 11:58:12,141 INFO L131 PetriNetUnfolder]: For 124929/125531 co-relation queries the response was YES. [2022-11-16 11:58:12,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61383 conditions, 24389 events. 4294/24389 cut-off events. For 124929/125531 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 329010 event pairs, 965 based on Foata normal form. 185/22600 useless extension candidates. Maximal degree in co-relation 61306. Up to 2224 conditions per place. [2022-11-16 11:58:12,494 INFO L137 encePairwiseOnDemand]: 259/273 looper letters, 465 selfloop transitions, 87 changer transitions 14/1002 dead transitions. [2022-11-16 11:58:12,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 1002 transitions, 14288 flow [2022-11-16 11:58:12,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:58:12,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:58:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2791 transitions. [2022-11-16 11:58:12,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7864187094956325 [2022-11-16 11:58:12,499 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2791 transitions. [2022-11-16 11:58:12,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2791 transitions. [2022-11-16 11:58:12,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:12,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2791 transitions. [2022-11-16 11:58:12,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 214.69230769230768) internal successors, (2791), 13 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:12,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:12,513 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:12,513 INFO L175 Difference]: Start difference. First operand has 392 places, 674 transitions, 9241 flow. Second operand 13 states and 2791 transitions. [2022-11-16 11:58:12,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 1002 transitions, 14288 flow [2022-11-16 11:58:13,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 1002 transitions, 13796 flow, removed 246 selfloop flow, removed 6 redundant places. [2022-11-16 11:58:13,481 INFO L231 Difference]: Finished difference. Result has 401 places, 750 transitions, 10108 flow [2022-11-16 11:58:13,482 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=8815, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=10108, PETRI_PLACES=401, PETRI_TRANSITIONS=750} [2022-11-16 11:58:13,483 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 151 predicate places. [2022-11-16 11:58:13,483 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 750 transitions, 10108 flow [2022-11-16 11:58:13,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:13,484 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:13,484 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:13,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:58:13,484 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:58:13,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:13,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1977091161, now seen corresponding path program 2 times [2022-11-16 11:58:13,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:13,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310261125] [2022-11-16 11:58:13,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:13,784 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:58:13,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:13,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310261125] [2022-11-16 11:58:13,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310261125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:13,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:13,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:58:13,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085208858] [2022-11-16 11:58:13,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:13,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:58:13,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:58:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:58:13,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 273 [2022-11-16 11:58:13,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 750 transitions, 10108 flow. Second operand has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:13,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:13,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 273 [2022-11-16 11:58:13,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:23,239 INFO L130 PetriNetUnfolder]: 6057/32069 cut-off events. [2022-11-16 11:58:23,240 INFO L131 PetriNetUnfolder]: For 186871/187909 co-relation queries the response was YES. [2022-11-16 11:58:23,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88848 conditions, 32069 events. 6057/32069 cut-off events. For 186871/187909 co-relation queries the response was YES. Maximal size of possible extension queue 876. Compared 452841 event pairs, 1713 based on Foata normal form. 186/30481 useless extension candidates. Maximal degree in co-relation 88769. Up to 6216 conditions per place. [2022-11-16 11:58:23,754 INFO L137 encePairwiseOnDemand]: 255/273 looper letters, 488 selfloop transitions, 119 changer transitions 15/1058 dead transitions. [2022-11-16 11:58:23,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 1058 transitions, 15124 flow [2022-11-16 11:58:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:58:23,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:58:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1977 transitions. [2022-11-16 11:58:23,760 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8046398046398047 [2022-11-16 11:58:23,760 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1977 transitions. [2022-11-16 11:58:23,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1977 transitions. [2022-11-16 11:58:23,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:58:23,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1977 transitions. [2022-11-16 11:58:23,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 219.66666666666666) internal successors, (1977), 9 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:23,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:23,769 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 273.0) internal successors, (2730), 10 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:23,769 INFO L175 Difference]: Start difference. First operand has 401 places, 750 transitions, 10108 flow. Second operand 9 states and 1977 transitions. [2022-11-16 11:58:23,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 1058 transitions, 15124 flow [2022-11-16 11:58:25,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1058 transitions, 14891 flow, removed 19 selfloop flow, removed 1 redundant places. [2022-11-16 11:58:25,016 INFO L231 Difference]: Finished difference. Result has 414 places, 813 transitions, 11320 flow [2022-11-16 11:58:25,017 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=9952, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=750, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=11320, PETRI_PLACES=414, PETRI_TRANSITIONS=813} [2022-11-16 11:58:25,017 INFO L288 CegarLoopForPetriNet]: 250 programPoint places, 164 predicate places. [2022-11-16 11:58:25,018 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 813 transitions, 11320 flow [2022-11-16 11:58:25,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:25,018 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:58:25,018 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:58:25,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:58:25,019 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:58:25,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:58:25,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1399742783, now seen corresponding path program 3 times [2022-11-16 11:58:25,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:58:25,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104926825] [2022-11-16 11:58:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:58:25,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:58:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:58:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:58:25,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:58:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104926825] [2022-11-16 11:58:25,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104926825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:58:25,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:58:25,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:58:25,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253870631] [2022-11-16 11:58:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:58:25,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:58:25,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:58:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:58:25,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:58:25,438 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 273 [2022-11-16 11:58:25,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 813 transitions, 11320 flow. Second operand has 8 states, 8 states have (on average 202.875) internal successors, (1623), 8 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:58:25,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:58:25,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 273 [2022-11-16 11:58:25,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand