./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/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_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/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_abe7d6d8-5c11-4c68-b0d8-358eff246766/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 cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c --- 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 12:37:22,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:37:22,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:37:22,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:37:22,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:37:22,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:37:22,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:37:22,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:37:22,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:37:22,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:37:22,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:37:22,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:37:22,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:37:22,954 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:37:22,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:37:22,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:37:22,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:37:22,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:37:22,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:37:22,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:37:22,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:37:22,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:37:22,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:37:22,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:37:22,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:37:22,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:37:22,989 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:37:22,990 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:37:22,990 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:37:22,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:37:22,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:37:22,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:37:22,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:37:22,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:37:23,005 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:37:23,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:37:23,006 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:37:23,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:37:23,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:37:23,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:37:23,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:37:23,009 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:37:23,054 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:37:23,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:37:23,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:37:23,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:37:23,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:37:23,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:37:23,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:37:23,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:37:23,058 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:37:23,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:37:23,059 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:37:23,060 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:37:23,060 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:37:23,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:37:23,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:37:23,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:37:23,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:37:23,061 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:37:23,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:37:23,061 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:37:23,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:37:23,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:37:23,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:37:23,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:37:23,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:23,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:37:23,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:37:23,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:37:23,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:37:23,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:37:23,064 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:37:23,064 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:37:23,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:37:23,064 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_abe7d6d8-5c11-4c68-b0d8-358eff246766/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfa53b3a6eade068c4346d28766037c8d26fae61c62dd4c8f6fc2f9d68567d2c [2022-11-16 12:37:23,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:37:23,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:37:23,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:37:23,358 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:37:23,359 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:37:23,360 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-11-16 12:37:23,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/data/b7b530a5f/8ea4478b70064e75bcc01c8873cd58ec/FLAG15bd0e08c [2022-11-16 12:37:23,979 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:37:23,979 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c [2022-11-16 12:37:23,986 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/data/b7b530a5f/8ea4478b70064e75bcc01c8873cd58ec/FLAG15bd0e08c [2022-11-16 12:37:24,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/data/b7b530a5f/8ea4478b70064e75bcc01c8873cd58ec [2022-11-16 12:37:24,368 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:37:24,373 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:37:24,376 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:24,377 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:37:24,380 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:37:24,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37bf32fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24, skipping insertion in model container [2022-11-16 12:37:24,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:37:24,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:37:24,683 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_abe7d6d8-5c11-4c68-b0d8-358eff246766/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-11-16 12:37:24,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:24,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:37:24,741 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_abe7d6d8-5c11-4c68-b0d8-358eff246766/sv-benchmarks/c/weaver/chl-simpl-str-symm.wvr.c[2303,2316] [2022-11-16 12:37:24,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:37:24,763 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:37:24,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24 WrapperNode [2022-11-16 12:37:24,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:37:24,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:24,764 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:37:24,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:37:24,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,822 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 122 [2022-11-16 12:37:24,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:37:24,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:37:24,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:37:24,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:37:24,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,857 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:37:24,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:37:24,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:37:24,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:37:24,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (1/1) ... [2022-11-16 12:37:24,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:37:24,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:37:24,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:37:24,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_abe7d6d8-5c11-4c68-b0d8-358eff246766/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:37:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:37:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:37:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:37:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:37:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:37:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:37:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:37:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:37:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:37:24,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:37:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:37:24,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:37:24,950 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 12:37:25,051 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:37:25,053 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:37:25,384 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:37:25,393 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:37:25,393 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:37:25,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:25 BoogieIcfgContainer [2022-11-16 12:37:25,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:37:25,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:37:25,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:37:25,417 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:37:25,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:37:24" (1/3) ... [2022-11-16 12:37:25,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f37bfcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:25, skipping insertion in model container [2022-11-16 12:37:25,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:37:24" (2/3) ... [2022-11-16 12:37:25,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f37bfcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:37:25, skipping insertion in model container [2022-11-16 12:37:25,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:37:25" (3/3) ... [2022-11-16 12:37:25,420 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-symm.wvr.c [2022-11-16 12:37:25,428 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:37:25,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:37:25,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 12:37:25,441 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:37:25,591 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:37:25,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 166 transitions, 348 flow [2022-11-16 12:37:25,774 INFO L130 PetriNetUnfolder]: 11/164 cut-off events. [2022-11-16 12:37:25,775 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:37:25,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 164 events. 11/164 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 240 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-16 12:37:25,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 166 transitions, 348 flow [2022-11-16 12:37:25,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 155 transitions, 322 flow [2022-11-16 12:37:25,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:37:25,806 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;@14b6bcf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:37:25,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 12:37:25,850 INFO L130 PetriNetUnfolder]: 11/154 cut-off events. [2022-11-16 12:37:25,850 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:37:25,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:25,852 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] [2022-11-16 12:37:25,852 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 12:37:25,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:25,860 INFO L85 PathProgramCache]: Analyzing trace with hash 722694995, now seen corresponding path program 1 times [2022-11-16 12:37:25,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:25,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229271402] [2022-11-16 12:37:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:25,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:26,809 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 12:37:26,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:26,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229271402] [2022-11-16 12:37:26,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229271402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:26,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:26,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:26,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043566847] [2022-11-16 12:37:26,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:26,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:26,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:26,876 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:26,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 155 transitions, 322 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:26,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:26,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:26,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:27,712 INFO L130 PetriNetUnfolder]: 153/1009 cut-off events. [2022-11-16 12:37:27,712 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-16 12:37:27,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1009 events. 153/1009 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7064 event pairs, 53 based on Foata normal form. 54/962 useless extension candidates. Maximal degree in co-relation 1118. Up to 134 conditions per place. [2022-11-16 12:37:27,723 INFO L137 encePairwiseOnDemand]: 136/166 looper letters, 106 selfloop transitions, 14 changer transitions 41/268 dead transitions. [2022-11-16 12:37:27,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 268 transitions, 903 flow [2022-11-16 12:37:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 12:37:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 12:37:27,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2655 transitions. [2022-11-16 12:37:27,761 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7616179001721171 [2022-11-16 12:37:27,762 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2655 transitions. [2022-11-16 12:37:27,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2655 transitions. [2022-11-16 12:37:27,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:27,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2655 transitions. [2022-11-16 12:37:27,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 126.42857142857143) internal successors, (2655), 21 states have internal predecessors, (2655), 0 states have call successors, (0), 0 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 12:37:27,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 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 12:37:27,806 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 166.0) internal successors, (3652), 22 states have internal predecessors, (3652), 0 states have call successors, (0), 0 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 12:37:27,808 INFO L175 Difference]: Start difference. First operand has 151 places, 155 transitions, 322 flow. Second operand 21 states and 2655 transitions. [2022-11-16 12:37:27,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 268 transitions, 903 flow [2022-11-16 12:37:27,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 268 transitions, 873 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:37:27,827 INFO L231 Difference]: Finished difference. Result has 182 places, 157 transitions, 434 flow [2022-11-16 12:37:27,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=434, PETRI_PLACES=182, PETRI_TRANSITIONS=157} [2022-11-16 12:37:27,834 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 31 predicate places. [2022-11-16 12:37:27,834 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 157 transitions, 434 flow [2022-11-16 12:37:27,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:27,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:27,836 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] [2022-11-16 12:37:27,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:37:27,837 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 12:37:27,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:27,840 INFO L85 PathProgramCache]: Analyzing trace with hash 758306373, now seen corresponding path program 2 times [2022-11-16 12:37:27,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:27,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042056737] [2022-11-16 12:37:27,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:27,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:28,425 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 12:37:28,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:28,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042056737] [2022-11-16 12:37:28,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042056737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:28,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:28,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:28,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796691208] [2022-11-16 12:37:28,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:28,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:28,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:28,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:28,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:28,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:28,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 157 transitions, 434 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:28,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:28,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:28,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:29,439 INFO L130 PetriNetUnfolder]: 230/1348 cut-off events. [2022-11-16 12:37:29,444 INFO L131 PetriNetUnfolder]: For 1050/1056 co-relation queries the response was YES. [2022-11-16 12:37:29,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 1348 events. 230/1348 cut-off events. For 1050/1056 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9652 event pairs, 34 based on Foata normal form. 10/1314 useless extension candidates. Maximal degree in co-relation 2852. Up to 226 conditions per place. [2022-11-16 12:37:29,457 INFO L137 encePairwiseOnDemand]: 147/166 looper letters, 133 selfloop transitions, 36 changer transitions 38/314 dead transitions. [2022-11-16 12:37:29,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 314 transitions, 1604 flow [2022-11-16 12:37:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 12:37:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 12:37:29,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2878 transitions. [2022-11-16 12:37:29,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7537977998952331 [2022-11-16 12:37:29,465 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2878 transitions. [2022-11-16 12:37:29,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2878 transitions. [2022-11-16 12:37:29,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:29,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2878 transitions. [2022-11-16 12:37:29,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 125.1304347826087) internal successors, (2878), 23 states have internal predecessors, (2878), 0 states have call successors, (0), 0 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 12:37:29,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 166.0) internal successors, (3984), 24 states have internal predecessors, (3984), 0 states have call successors, (0), 0 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 12:37:29,487 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 166.0) internal successors, (3984), 24 states have internal predecessors, (3984), 0 states have call successors, (0), 0 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 12:37:29,487 INFO L175 Difference]: Start difference. First operand has 182 places, 157 transitions, 434 flow. Second operand 23 states and 2878 transitions. [2022-11-16 12:37:29,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 314 transitions, 1604 flow [2022-11-16 12:37:29,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 314 transitions, 1512 flow, removed 44 selfloop flow, removed 8 redundant places. [2022-11-16 12:37:29,507 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 787 flow [2022-11-16 12:37:29,508 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=787, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2022-11-16 12:37:29,509 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 47 predicate places. [2022-11-16 12:37:29,509 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 787 flow [2022-11-16 12:37:29,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:29,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:29,510 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] [2022-11-16 12:37:29,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:37:29,511 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 12:37:29,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash -503534527, now seen corresponding path program 3 times [2022-11-16 12:37:29,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:29,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438075545] [2022-11-16 12:37:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:29,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:29,861 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 12:37:29,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438075545] [2022-11-16 12:37:29,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438075545] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:29,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:29,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122206277] [2022-11-16 12:37:29,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:29,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:29,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:29,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:29,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:29,869 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:29,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 787 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:29,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:29,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:29,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:30,447 INFO L130 PetriNetUnfolder]: 215/1335 cut-off events. [2022-11-16 12:37:30,448 INFO L131 PetriNetUnfolder]: For 2716/2722 co-relation queries the response was YES. [2022-11-16 12:37:30,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 1335 events. 215/1335 cut-off events. For 2716/2722 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9485 event pairs, 109 based on Foata normal form. 1/1277 useless extension candidates. Maximal degree in co-relation 3410. Up to 254 conditions per place. [2022-11-16 12:37:30,461 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 122 selfloop transitions, 25 changer transitions 21/275 dead transitions. [2022-11-16 12:37:30,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 275 transitions, 1633 flow [2022-11-16 12:37:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:37:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:37:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1643 transitions. [2022-11-16 12:37:30,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7613531047265987 [2022-11-16 12:37:30,466 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1643 transitions. [2022-11-16 12:37:30,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1643 transitions. [2022-11-16 12:37:30,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:30,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1643 transitions. [2022-11-16 12:37:30,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.38461538461539) internal successors, (1643), 13 states have internal predecessors, (1643), 0 states have call successors, (0), 0 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 12:37:30,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 12:37:30,477 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 12:37:30,479 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 787 flow. Second operand 13 states and 1643 transitions. [2022-11-16 12:37:30,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 275 transitions, 1633 flow [2022-11-16 12:37:30,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 275 transitions, 1544 flow, removed 43 selfloop flow, removed 6 redundant places. [2022-11-16 12:37:30,504 INFO L231 Difference]: Finished difference. Result has 205 places, 197 transitions, 932 flow [2022-11-16 12:37:30,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=932, PETRI_PLACES=205, PETRI_TRANSITIONS=197} [2022-11-16 12:37:30,507 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 54 predicate places. [2022-11-16 12:37:30,507 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 197 transitions, 932 flow [2022-11-16 12:37:30,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:30,510 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:30,510 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] [2022-11-16 12:37:30,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:37:30,510 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 12:37:30,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:30,511 INFO L85 PathProgramCache]: Analyzing trace with hash -189166153, now seen corresponding path program 4 times [2022-11-16 12:37:30,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:30,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950791229] [2022-11-16 12:37:30,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:30,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:30,930 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 12:37:30,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:30,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950791229] [2022-11-16 12:37:30,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950791229] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:30,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:30,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:30,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893043240] [2022-11-16 12:37:30,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:30,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:30,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:30,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:30,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:30,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:30,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 197 transitions, 932 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:30,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:30,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:30,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:31,653 INFO L130 PetriNetUnfolder]: 217/1467 cut-off events. [2022-11-16 12:37:31,653 INFO L131 PetriNetUnfolder]: For 2986/2992 co-relation queries the response was YES. [2022-11-16 12:37:31,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 1467 events. 217/1467 cut-off events. For 2986/2992 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 10744 event pairs, 91 based on Foata normal form. 5/1410 useless extension candidates. Maximal degree in co-relation 3671. Up to 300 conditions per place. [2022-11-16 12:37:31,667 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 145 selfloop transitions, 23 changer transitions 24/299 dead transitions. [2022-11-16 12:37:31,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 299 transitions, 1962 flow [2022-11-16 12:37:31,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:31,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1894 transitions. [2022-11-16 12:37:31,673 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7606425702811245 [2022-11-16 12:37:31,673 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1894 transitions. [2022-11-16 12:37:31,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1894 transitions. [2022-11-16 12:37:31,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:31,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1894 transitions. [2022-11-16 12:37:31,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.26666666666667) internal successors, (1894), 15 states have internal predecessors, (1894), 0 states have call successors, (0), 0 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 12:37:31,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:31,685 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:31,688 INFO L175 Difference]: Start difference. First operand has 205 places, 197 transitions, 932 flow. Second operand 15 states and 1894 transitions. [2022-11-16 12:37:31,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 299 transitions, 1962 flow [2022-11-16 12:37:31,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 299 transitions, 1844 flow, removed 41 selfloop flow, removed 7 redundant places. [2022-11-16 12:37:31,715 INFO L231 Difference]: Finished difference. Result has 221 places, 207 transitions, 1098 flow [2022-11-16 12:37:31,715 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1098, PETRI_PLACES=221, PETRI_TRANSITIONS=207} [2022-11-16 12:37:31,717 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 70 predicate places. [2022-11-16 12:37:31,717 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 207 transitions, 1098 flow [2022-11-16 12:37:31,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:31,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:31,719 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] [2022-11-16 12:37:31,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:37:31,720 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 12:37:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1384740205, now seen corresponding path program 5 times [2022-11-16 12:37:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794915147] [2022-11-16 12:37:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:31,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:32,081 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 12:37:32,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:32,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794915147] [2022-11-16 12:37:32,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794915147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:32,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:32,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011133959] [2022-11-16 12:37:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:32,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:32,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 207 transitions, 1098 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:32,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:32,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:32,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:32,884 INFO L130 PetriNetUnfolder]: 254/1727 cut-off events. [2022-11-16 12:37:32,884 INFO L131 PetriNetUnfolder]: For 4160/4166 co-relation queries the response was YES. [2022-11-16 12:37:32,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4552 conditions, 1727 events. 254/1727 cut-off events. For 4160/4166 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12977 event pairs, 72 based on Foata normal form. 1/1658 useless extension candidates. Maximal degree in co-relation 4456. Up to 359 conditions per place. [2022-11-16 12:37:32,897 INFO L137 encePairwiseOnDemand]: 146/166 looper letters, 127 selfloop transitions, 34 changer transitions 23/291 dead transitions. [2022-11-16 12:37:32,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 291 transitions, 1954 flow [2022-11-16 12:37:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:37:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:37:32,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1766 transitions. [2022-11-16 12:37:32,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7598967297762479 [2022-11-16 12:37:32,902 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1766 transitions. [2022-11-16 12:37:32,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1766 transitions. [2022-11-16 12:37:32,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:32,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1766 transitions. [2022-11-16 12:37:32,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.14285714285714) internal successors, (1766), 14 states have internal predecessors, (1766), 0 states have call successors, (0), 0 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 12:37:32,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:32,913 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:32,913 INFO L175 Difference]: Start difference. First operand has 221 places, 207 transitions, 1098 flow. Second operand 14 states and 1766 transitions. [2022-11-16 12:37:32,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 291 transitions, 1954 flow [2022-11-16 12:37:32,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 291 transitions, 1912 flow, removed 21 selfloop flow, removed 7 redundant places. [2022-11-16 12:37:32,944 INFO L231 Difference]: Finished difference. Result has 229 places, 217 transitions, 1323 flow [2022-11-16 12:37:32,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1323, PETRI_PLACES=229, PETRI_TRANSITIONS=217} [2022-11-16 12:37:32,946 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 78 predicate places. [2022-11-16 12:37:32,946 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 217 transitions, 1323 flow [2022-11-16 12:37:32,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:32,947 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:32,947 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] [2022-11-16 12:37:32,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:37:32,947 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 12:37:32,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash -199703781, now seen corresponding path program 6 times [2022-11-16 12:37:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:32,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712543511] [2022-11-16 12:37:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:32,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:33,237 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 12:37:33,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:33,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712543511] [2022-11-16 12:37:33,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712543511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:33,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:33,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:33,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433831653] [2022-11-16 12:37:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:33,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:33,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:33,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:33,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:33,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:33,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 217 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:33,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:33,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:33,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:33,910 INFO L130 PetriNetUnfolder]: 250/1637 cut-off events. [2022-11-16 12:37:33,910 INFO L131 PetriNetUnfolder]: For 5028/5081 co-relation queries the response was YES. [2022-11-16 12:37:33,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4693 conditions, 1637 events. 250/1637 cut-off events. For 5028/5081 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12023 event pairs, 107 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 4603. Up to 336 conditions per place. [2022-11-16 12:37:33,925 INFO L137 encePairwiseOnDemand]: 148/166 looper letters, 138 selfloop transitions, 19 changer transitions 26/290 dead transitions. [2022-11-16 12:37:33,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 290 transitions, 2124 flow [2022-11-16 12:37:33,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:33,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1872 transitions. [2022-11-16 12:37:33,930 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7518072289156627 [2022-11-16 12:37:33,930 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1872 transitions. [2022-11-16 12:37:33,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1872 transitions. [2022-11-16 12:37:33,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:33,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1872 transitions. [2022-11-16 12:37:33,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.8) internal successors, (1872), 15 states have internal predecessors, (1872), 0 states have call successors, (0), 0 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 12:37:33,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:33,942 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:33,942 INFO L175 Difference]: Start difference. First operand has 229 places, 217 transitions, 1323 flow. Second operand 15 states and 1872 transitions. [2022-11-16 12:37:33,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 290 transitions, 2124 flow [2022-11-16 12:37:34,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 290 transitions, 2067 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-11-16 12:37:34,024 INFO L231 Difference]: Finished difference. Result has 233 places, 208 transitions, 1220 flow [2022-11-16 12:37:34,024 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1220, PETRI_PLACES=233, PETRI_TRANSITIONS=208} [2022-11-16 12:37:34,027 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-16 12:37:34,028 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 208 transitions, 1220 flow [2022-11-16 12:37:34,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:34,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:34,029 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] [2022-11-16 12:37:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:37:34,029 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 12:37:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash 659857909, now seen corresponding path program 7 times [2022-11-16 12:37:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:34,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553013408] [2022-11-16 12:37:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:34,299 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 12:37:34,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:34,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553013408] [2022-11-16 12:37:34,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553013408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:34,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:34,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572812960] [2022-11-16 12:37:34,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:34,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:34,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:34,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 208 transitions, 1220 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:34,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:34,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:34,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:35,113 INFO L130 PetriNetUnfolder]: 248/1681 cut-off events. [2022-11-16 12:37:35,114 INFO L131 PetriNetUnfolder]: For 5217/5270 co-relation queries the response was YES. [2022-11-16 12:37:35,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4753 conditions, 1681 events. 248/1681 cut-off events. For 5217/5270 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 12518 event pairs, 116 based on Foata normal form. 6/1609 useless extension candidates. Maximal degree in co-relation 4693. Up to 418 conditions per place. [2022-11-16 12:37:35,131 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 145 selfloop transitions, 15 changer transitions 24/291 dead transitions. [2022-11-16 12:37:35,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 291 transitions, 2072 flow [2022-11-16 12:37:35,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1891 transitions. [2022-11-16 12:37:35,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594377510040161 [2022-11-16 12:37:35,140 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1891 transitions. [2022-11-16 12:37:35,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1891 transitions. [2022-11-16 12:37:35,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:35,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1891 transitions. [2022-11-16 12:37:35,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.06666666666666) internal successors, (1891), 15 states have internal predecessors, (1891), 0 states have call successors, (0), 0 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 12:37:35,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:35,168 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:35,172 INFO L175 Difference]: Start difference. First operand has 233 places, 208 transitions, 1220 flow. Second operand 15 states and 1891 transitions. [2022-11-16 12:37:35,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 291 transitions, 2072 flow [2022-11-16 12:37:35,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 291 transitions, 1941 flow, removed 34 selfloop flow, removed 13 redundant places. [2022-11-16 12:37:35,217 INFO L231 Difference]: Finished difference. Result has 231 places, 209 transitions, 1217 flow [2022-11-16 12:37:35,217 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1217, PETRI_PLACES=231, PETRI_TRANSITIONS=209} [2022-11-16 12:37:35,218 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 80 predicate places. [2022-11-16 12:37:35,218 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 209 transitions, 1217 flow [2022-11-16 12:37:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:35,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:35,219 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] [2022-11-16 12:37:35,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:37:35,220 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 12:37:35,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:35,221 INFO L85 PathProgramCache]: Analyzing trace with hash 851964725, now seen corresponding path program 8 times [2022-11-16 12:37:35,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:35,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044268456] [2022-11-16 12:37:35,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:35,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:35,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:35,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044268456] [2022-11-16 12:37:35,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044268456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:35,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:35,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:35,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308550252] [2022-11-16 12:37:35,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:35,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:35,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:35,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:35,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:35,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:35,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 209 transitions, 1217 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:35,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:35,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:35,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:36,254 INFO L130 PetriNetUnfolder]: 256/1705 cut-off events. [2022-11-16 12:37:36,254 INFO L131 PetriNetUnfolder]: For 5489/5533 co-relation queries the response was YES. [2022-11-16 12:37:36,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 1705 events. 256/1705 cut-off events. For 5489/5533 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12786 event pairs, 117 based on Foata normal form. 2/1638 useless extension candidates. Maximal degree in co-relation 4782. Up to 336 conditions per place. [2022-11-16 12:37:36,269 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 142 selfloop transitions, 22 changer transitions 20/291 dead transitions. [2022-11-16 12:37:36,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 291 transitions, 2199 flow [2022-11-16 12:37:36,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:37:36,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:37:36,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1642 transitions. [2022-11-16 12:37:36,273 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7608897126969416 [2022-11-16 12:37:36,273 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1642 transitions. [2022-11-16 12:37:36,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1642 transitions. [2022-11-16 12:37:36,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:36,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1642 transitions. [2022-11-16 12:37:36,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.3076923076923) internal successors, (1642), 13 states have internal predecessors, (1642), 0 states have call successors, (0), 0 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 12:37:36,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 12:37:36,282 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 12:37:36,282 INFO L175 Difference]: Start difference. First operand has 231 places, 209 transitions, 1217 flow. Second operand 13 states and 1642 transitions. [2022-11-16 12:37:36,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 291 transitions, 2199 flow [2022-11-16 12:37:36,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 291 transitions, 2088 flow, removed 43 selfloop flow, removed 10 redundant places. [2022-11-16 12:37:36,313 INFO L231 Difference]: Finished difference. Result has 233 places, 217 transitions, 1390 flow [2022-11-16 12:37:36,314 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1390, PETRI_PLACES=233, PETRI_TRANSITIONS=217} [2022-11-16 12:37:36,315 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-16 12:37:36,315 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 217 transitions, 1390 flow [2022-11-16 12:37:36,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:36,316 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:36,316 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] [2022-11-16 12:37:36,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:37:36,316 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 12:37:36,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:36,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1885846677, now seen corresponding path program 9 times [2022-11-16 12:37:36,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:36,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847180324] [2022-11-16 12:37:36,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:36,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:36,540 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 12:37:36,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:36,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847180324] [2022-11-16 12:37:36,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847180324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:36,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:36,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181164164] [2022-11-16 12:37:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:36,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:36,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:36,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:36,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 217 transitions, 1390 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:36,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:36,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:36,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:37,147 INFO L130 PetriNetUnfolder]: 251/1694 cut-off events. [2022-11-16 12:37:37,148 INFO L131 PetriNetUnfolder]: For 5391/5435 co-relation queries the response was YES. [2022-11-16 12:37:37,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4858 conditions, 1694 events. 251/1694 cut-off events. For 5391/5435 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12713 event pairs, 117 based on Foata normal form. 2/1627 useless extension candidates. Maximal degree in co-relation 4751. Up to 336 conditions per place. [2022-11-16 12:37:37,164 INFO L137 encePairwiseOnDemand]: 149/166 looper letters, 140 selfloop transitions, 15 changer transitions 26/288 dead transitions. [2022-11-16 12:37:37,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 288 transitions, 2165 flow [2022-11-16 12:37:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:37:37,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:37:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1756 transitions. [2022-11-16 12:37:37,170 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7555938037865749 [2022-11-16 12:37:37,171 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1756 transitions. [2022-11-16 12:37:37,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1756 transitions. [2022-11-16 12:37:37,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:37,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1756 transitions. [2022-11-16 12:37:37,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 125.42857142857143) internal successors, (1756), 14 states have internal predecessors, (1756), 0 states have call successors, (0), 0 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 12:37:37,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:37,185 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:37,186 INFO L175 Difference]: Start difference. First operand has 233 places, 217 transitions, 1390 flow. Second operand 14 states and 1756 transitions. [2022-11-16 12:37:37,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 288 transitions, 2165 flow [2022-11-16 12:37:37,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 288 transitions, 2106 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-11-16 12:37:37,219 INFO L231 Difference]: Finished difference. Result has 241 places, 210 transitions, 1283 flow [2022-11-16 12:37:37,220 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1283, PETRI_PLACES=241, PETRI_TRANSITIONS=210} [2022-11-16 12:37:37,221 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 90 predicate places. [2022-11-16 12:37:37,221 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 210 transitions, 1283 flow [2022-11-16 12:37:37,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:37,222 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:37,222 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] [2022-11-16 12:37:37,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:37:37,223 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 12:37:37,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:37,223 INFO L85 PathProgramCache]: Analyzing trace with hash -710313429, now seen corresponding path program 10 times [2022-11-16 12:37:37,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:37,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266907375] [2022-11-16 12:37:37,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:37,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:37,523 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 12:37:37,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:37,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266907375] [2022-11-16 12:37:37,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266907375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:37,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:37,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:37,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486144714] [2022-11-16 12:37:37,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:37,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:37,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:37,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:37,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:37,535 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:37,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 210 transitions, 1283 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:37,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:37,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:37,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:38,178 INFO L130 PetriNetUnfolder]: 249/1742 cut-off events. [2022-11-16 12:37:38,179 INFO L131 PetriNetUnfolder]: For 5393/5437 co-relation queries the response was YES. [2022-11-16 12:37:38,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4875 conditions, 1742 events. 249/1742 cut-off events. For 5393/5437 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13210 event pairs, 122 based on Foata normal form. 9/1669 useless extension candidates. Maximal degree in co-relation 4767. Up to 418 conditions per place. [2022-11-16 12:37:38,198 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 121 selfloop transitions, 25 changer transitions 20/273 dead transitions. [2022-11-16 12:37:38,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 273 transitions, 2040 flow [2022-11-16 12:37:38,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 12:37:38,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 12:37:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1639 transitions. [2022-11-16 12:37:38,202 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594995366079703 [2022-11-16 12:37:38,202 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1639 transitions. [2022-11-16 12:37:38,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1639 transitions. [2022-11-16 12:37:38,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:38,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1639 transitions. [2022-11-16 12:37:38,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 126.07692307692308) internal successors, (1639), 13 states have internal predecessors, (1639), 0 states have call successors, (0), 0 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 12:37:38,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 12:37:38,210 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 166.0) internal successors, (2324), 14 states have internal predecessors, (2324), 0 states have call successors, (0), 0 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 12:37:38,210 INFO L175 Difference]: Start difference. First operand has 241 places, 210 transitions, 1283 flow. Second operand 13 states and 1639 transitions. [2022-11-16 12:37:38,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 273 transitions, 2040 flow [2022-11-16 12:37:38,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 273 transitions, 1922 flow, removed 38 selfloop flow, removed 15 redundant places. [2022-11-16 12:37:38,241 INFO L231 Difference]: Finished difference. Result has 232 places, 214 transitions, 1358 flow [2022-11-16 12:37:38,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1358, PETRI_PLACES=232, PETRI_TRANSITIONS=214} [2022-11-16 12:37:38,244 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 81 predicate places. [2022-11-16 12:37:38,244 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 214 transitions, 1358 flow [2022-11-16 12:37:38,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:38,245 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:38,245 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] [2022-11-16 12:37:38,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:37:38,245 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 12:37:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:38,246 INFO L85 PathProgramCache]: Analyzing trace with hash 974174317, now seen corresponding path program 11 times [2022-11-16 12:37:38,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:38,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256744194] [2022-11-16 12:37:38,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:38,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:38,524 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 12:37:38,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:38,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256744194] [2022-11-16 12:37:38,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256744194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:38,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:38,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:38,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146683462] [2022-11-16 12:37:38,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:38,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:38,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:38,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:38,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:38,528 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 166 [2022-11-16 12:37:38,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 214 transitions, 1358 flow. Second operand has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:38,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:38,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 166 [2022-11-16 12:37:38,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:39,166 INFO L130 PetriNetUnfolder]: 246/1681 cut-off events. [2022-11-16 12:37:39,166 INFO L131 PetriNetUnfolder]: For 4866/4910 co-relation queries the response was YES. [2022-11-16 12:37:39,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4687 conditions, 1681 events. 246/1681 cut-off events. For 4866/4910 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 12569 event pairs, 120 based on Foata normal form. 9/1610 useless extension candidates. Maximal degree in co-relation 4587. Up to 418 conditions per place. [2022-11-16 12:37:39,182 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 118 selfloop transitions, 18 changer transitions 26/269 dead transitions. [2022-11-16 12:37:39,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 269 transitions, 1921 flow [2022-11-16 12:37:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:37:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:37:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1755 transitions. [2022-11-16 12:37:39,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551635111876076 [2022-11-16 12:37:39,186 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1755 transitions. [2022-11-16 12:37:39,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1755 transitions. [2022-11-16 12:37:39,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:39,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1755 transitions. [2022-11-16 12:37:39,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 125.35714285714286) internal successors, (1755), 14 states have internal predecessors, (1755), 0 states have call successors, (0), 0 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 12:37:39,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:39,194 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:39,194 INFO L175 Difference]: Start difference. First operand has 232 places, 214 transitions, 1358 flow. Second operand 14 states and 1755 transitions. [2022-11-16 12:37:39,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 269 transitions, 1921 flow [2022-11-16 12:37:39,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 269 transitions, 1821 flow, removed 27 selfloop flow, removed 9 redundant places. [2022-11-16 12:37:39,222 INFO L231 Difference]: Finished difference. Result has 234 places, 204 transitions, 1164 flow [2022-11-16 12:37:39,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1278, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1164, PETRI_PLACES=234, PETRI_TRANSITIONS=204} [2022-11-16 12:37:39,223 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 83 predicate places. [2022-11-16 12:37:39,223 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 204 transitions, 1164 flow [2022-11-16 12:37:39,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.0) internal successors, (1200), 10 states have internal predecessors, (1200), 0 states have call successors, (0), 0 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 12:37:39,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:39,224 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] [2022-11-16 12:37:39,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:37:39,225 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 12:37:39,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:39,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1829865364, now seen corresponding path program 1 times [2022-11-16 12:37:39,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:39,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503275504] [2022-11-16 12:37:39,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:39,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:39,477 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 12:37:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:39,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503275504] [2022-11-16 12:37:39,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503275504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:39,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:39,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:39,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678210135] [2022-11-16 12:37:39,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:39,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:39,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:39,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:39,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:39,481 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:39,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 204 transitions, 1164 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:39,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:39,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:39,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:40,138 INFO L130 PetriNetUnfolder]: 219/1288 cut-off events. [2022-11-16 12:37:40,139 INFO L131 PetriNetUnfolder]: For 5473/5561 co-relation queries the response was YES. [2022-11-16 12:37:40,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3816 conditions, 1288 events. 219/1288 cut-off events. For 5473/5561 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8448 event pairs, 69 based on Foata normal form. 43/1289 useless extension candidates. Maximal degree in co-relation 3773. Up to 236 conditions per place. [2022-11-16 12:37:40,156 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 143 selfloop transitions, 12 changer transitions 34/304 dead transitions. [2022-11-16 12:37:40,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 304 transitions, 2344 flow [2022-11-16 12:37:40,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:37:40,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:37:40,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2414 transitions. [2022-11-16 12:37:40,161 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7653772986683577 [2022-11-16 12:37:40,161 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2414 transitions. [2022-11-16 12:37:40,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2414 transitions. [2022-11-16 12:37:40,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:40,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2414 transitions. [2022-11-16 12:37:40,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 127.05263157894737) internal successors, (2414), 19 states have internal predecessors, (2414), 0 states have call successors, (0), 0 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 12:37:40,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 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 12:37:40,172 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 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 12:37:40,172 INFO L175 Difference]: Start difference. First operand has 234 places, 204 transitions, 1164 flow. Second operand 19 states and 2414 transitions. [2022-11-16 12:37:40,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 304 transitions, 2344 flow [2022-11-16 12:37:40,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 304 transitions, 2044 flow, removed 115 selfloop flow, removed 20 redundant places. [2022-11-16 12:37:40,194 INFO L231 Difference]: Finished difference. Result has 220 places, 184 transitions, 876 flow [2022-11-16 12:37:40,194 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=876, PETRI_PLACES=220, PETRI_TRANSITIONS=184} [2022-11-16 12:37:40,196 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 69 predicate places. [2022-11-16 12:37:40,197 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 184 transitions, 876 flow [2022-11-16 12:37:40,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:40,197 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:40,198 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] [2022-11-16 12:37:40,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:37:40,198 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 12:37:40,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1583119236, now seen corresponding path program 2 times [2022-11-16 12:37:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:40,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520108226] [2022-11-16 12:37:40,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:40,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:40,426 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 12:37:40,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:40,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520108226] [2022-11-16 12:37:40,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520108226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:40,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:40,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:40,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941806280] [2022-11-16 12:37:40,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:40,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:40,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:40,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:40,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:40,431 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:40,432 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 184 transitions, 876 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:40,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:40,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:40,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:40,951 INFO L130 PetriNetUnfolder]: 225/1388 cut-off events. [2022-11-16 12:37:40,951 INFO L131 PetriNetUnfolder]: For 5904/5965 co-relation queries the response was YES. [2022-11-16 12:37:40,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4386 conditions, 1388 events. 225/1388 cut-off events. For 5904/5965 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9368 event pairs, 87 based on Foata normal form. 19/1350 useless extension candidates. Maximal degree in co-relation 4341. Up to 353 conditions per place. [2022-11-16 12:37:40,963 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 104 selfloop transitions, 21 changer transitions 20/260 dead transitions. [2022-11-16 12:37:40,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 260 transitions, 1953 flow [2022-11-16 12:37:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:37:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:37:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2021 transitions. [2022-11-16 12:37:40,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7609186746987951 [2022-11-16 12:37:40,969 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2021 transitions. [2022-11-16 12:37:40,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2021 transitions. [2022-11-16 12:37:40,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:40,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2021 transitions. [2022-11-16 12:37:40,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.3125) internal successors, (2021), 16 states have internal predecessors, (2021), 0 states have call successors, (0), 0 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 12:37:40,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 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 12:37:40,980 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 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 12:37:40,980 INFO L175 Difference]: Start difference. First operand has 220 places, 184 transitions, 876 flow. Second operand 16 states and 2021 transitions. [2022-11-16 12:37:40,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 260 transitions, 1953 flow [2022-11-16 12:37:40,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 260 transitions, 1816 flow, removed 65 selfloop flow, removed 10 redundant places. [2022-11-16 12:37:41,003 INFO L231 Difference]: Finished difference. Result has 224 places, 199 transitions, 1121 flow [2022-11-16 12:37:41,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1121, PETRI_PLACES=224, PETRI_TRANSITIONS=199} [2022-11-16 12:37:41,005 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 73 predicate places. [2022-11-16 12:37:41,005 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 199 transitions, 1121 flow [2022-11-16 12:37:41,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:41,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:41,006 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] [2022-11-16 12:37:41,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:37:41,006 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 12:37:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:41,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1105547792, now seen corresponding path program 1 times [2022-11-16 12:37:41,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:41,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478774034] [2022-11-16 12:37:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:41,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:41,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:41,267 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 12:37:41,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:41,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478774034] [2022-11-16 12:37:41,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478774034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:41,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:41,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:41,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409240623] [2022-11-16 12:37:41,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:41,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:41,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:41,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:41,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:41,271 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:41,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 199 transitions, 1121 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:41,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:41,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:41,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:42,115 INFO L130 PetriNetUnfolder]: 260/1437 cut-off events. [2022-11-16 12:37:42,116 INFO L131 PetriNetUnfolder]: For 5853/5912 co-relation queries the response was YES. [2022-11-16 12:37:42,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4594 conditions, 1437 events. 260/1437 cut-off events. For 5853/5912 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 9874 event pairs, 126 based on Foata normal form. 28/1407 useless extension candidates. Maximal degree in co-relation 4547. Up to 587 conditions per place. [2022-11-16 12:37:42,127 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 101 selfloop transitions, 5 changer transitions 34/263 dead transitions. [2022-11-16 12:37:42,127 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 263 transitions, 1757 flow [2022-11-16 12:37:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:37:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:37:42,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2383 transitions. [2022-11-16 12:37:42,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7555485098287889 [2022-11-16 12:37:42,132 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2383 transitions. [2022-11-16 12:37:42,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2383 transitions. [2022-11-16 12:37:42,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:42,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2383 transitions. [2022-11-16 12:37:42,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 125.42105263157895) internal successors, (2383), 19 states have internal predecessors, (2383), 0 states have call successors, (0), 0 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 12:37:42,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 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 12:37:42,143 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 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 12:37:42,143 INFO L175 Difference]: Start difference. First operand has 224 places, 199 transitions, 1121 flow. Second operand 19 states and 2383 transitions. [2022-11-16 12:37:42,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 263 transitions, 1757 flow [2022-11-16 12:37:42,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 263 transitions, 1666 flow, removed 40 selfloop flow, removed 7 redundant places. [2022-11-16 12:37:42,171 INFO L231 Difference]: Finished difference. Result has 243 places, 199 transitions, 1102 flow [2022-11-16 12:37:42,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1102, PETRI_PLACES=243, PETRI_TRANSITIONS=199} [2022-11-16 12:37:42,172 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 92 predicate places. [2022-11-16 12:37:42,172 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 199 transitions, 1102 flow [2022-11-16 12:37:42,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:42,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:42,173 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] [2022-11-16 12:37:42,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:37:42,174 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 12:37:42,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:42,174 INFO L85 PathProgramCache]: Analyzing trace with hash -868339342, now seen corresponding path program 2 times [2022-11-16 12:37:42,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:42,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157112035] [2022-11-16 12:37:42,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:42,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:42,392 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 12:37:42,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:42,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157112035] [2022-11-16 12:37:42,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157112035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:42,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:42,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:42,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656497505] [2022-11-16 12:37:42,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:42,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:42,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:42,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:42,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:42,398 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 199 transitions, 1102 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:42,398 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:42,398 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:42,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:42,886 INFO L130 PetriNetUnfolder]: 172/1076 cut-off events. [2022-11-16 12:37:42,886 INFO L131 PetriNetUnfolder]: For 4368/4418 co-relation queries the response was YES. [2022-11-16 12:37:42,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 1076 events. 172/1076 cut-off events. For 4368/4418 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6585 event pairs, 70 based on Foata normal form. 37/1069 useless extension candidates. Maximal degree in co-relation 3350. Up to 204 conditions per place. [2022-11-16 12:37:42,896 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 103 selfloop transitions, 15 changer transitions 22/262 dead transitions. [2022-11-16 12:37:42,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 262 transitions, 1883 flow [2022-11-16 12:37:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:37:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:37:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1780 transitions. [2022-11-16 12:37:42,901 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.76592082616179 [2022-11-16 12:37:42,901 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1780 transitions. [2022-11-16 12:37:42,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1780 transitions. [2022-11-16 12:37:42,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:42,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1780 transitions. [2022-11-16 12:37:42,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 127.14285714285714) internal successors, (1780), 14 states have internal predecessors, (1780), 0 states have call successors, (0), 0 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 12:37:42,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:42,909 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:42,910 INFO L175 Difference]: Start difference. First operand has 243 places, 199 transitions, 1102 flow. Second operand 14 states and 1780 transitions. [2022-11-16 12:37:42,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 262 transitions, 1883 flow [2022-11-16 12:37:42,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 262 transitions, 1741 flow, removed 51 selfloop flow, removed 17 redundant places. [2022-11-16 12:37:42,935 INFO L231 Difference]: Finished difference. Result has 237 places, 208 transitions, 1245 flow [2022-11-16 12:37:42,936 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1245, PETRI_PLACES=237, PETRI_TRANSITIONS=208} [2022-11-16 12:37:42,937 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 86 predicate places. [2022-11-16 12:37:42,937 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 208 transitions, 1245 flow [2022-11-16 12:37:42,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:42,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:42,938 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] [2022-11-16 12:37:42,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:37:42,938 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 12:37:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:42,939 INFO L85 PathProgramCache]: Analyzing trace with hash 542854362, now seen corresponding path program 3 times [2022-11-16 12:37:42,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:42,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900204356] [2022-11-16 12:37:42,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:42,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:43,153 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 12:37:43,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:43,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900204356] [2022-11-16 12:37:43,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900204356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:43,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:43,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181981218] [2022-11-16 12:37:43,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:43,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:43,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:43,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:43,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:43,158 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 208 transitions, 1245 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:43,158 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:43,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:43,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:43,579 INFO L130 PetriNetUnfolder]: 157/1020 cut-off events. [2022-11-16 12:37:43,579 INFO L131 PetriNetUnfolder]: For 4311/4371 co-relation queries the response was YES. [2022-11-16 12:37:43,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3365 conditions, 1020 events. 157/1020 cut-off events. For 4311/4371 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6163 event pairs, 58 based on Foata normal form. 9/992 useless extension candidates. Maximal degree in co-relation 3312. Up to 266 conditions per place. [2022-11-16 12:37:43,588 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 100 selfloop transitions, 28 changer transitions 20/268 dead transitions. [2022-11-16 12:37:43,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 268 transitions, 2088 flow [2022-11-16 12:37:43,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1896 transitions. [2022-11-16 12:37:43,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7614457831325301 [2022-11-16 12:37:43,593 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1896 transitions. [2022-11-16 12:37:43,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1896 transitions. [2022-11-16 12:37:43,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:43,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1896 transitions. [2022-11-16 12:37:43,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.4) internal successors, (1896), 15 states have internal predecessors, (1896), 0 states have call successors, (0), 0 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 12:37:43,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:43,603 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:43,604 INFO L175 Difference]: Start difference. First operand has 237 places, 208 transitions, 1245 flow. Second operand 15 states and 1896 transitions. [2022-11-16 12:37:43,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 268 transitions, 2088 flow [2022-11-16 12:37:43,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 268 transitions, 2016 flow, removed 35 selfloop flow, removed 6 redundant places. [2022-11-16 12:37:43,631 INFO L231 Difference]: Finished difference. Result has 251 places, 220 transitions, 1483 flow [2022-11-16 12:37:43,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1483, PETRI_PLACES=251, PETRI_TRANSITIONS=220} [2022-11-16 12:37:43,632 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 100 predicate places. [2022-11-16 12:37:43,634 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 220 transitions, 1483 flow [2022-11-16 12:37:43,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:43,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:43,635 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] [2022-11-16 12:37:43,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:37:43,636 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:43,637 INFO L85 PathProgramCache]: Analyzing trace with hash -405415398, now seen corresponding path program 4 times [2022-11-16 12:37:43,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:43,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312375079] [2022-11-16 12:37:43,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:43,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:43,850 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 12:37:43,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:43,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312375079] [2022-11-16 12:37:43,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312375079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:43,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:43,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:43,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5694280] [2022-11-16 12:37:43,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:43,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:43,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:43,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:43,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:43,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:43,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 220 transitions, 1483 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:43,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:43,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:43,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:44,342 INFO L130 PetriNetUnfolder]: 150/1058 cut-off events. [2022-11-16 12:37:44,342 INFO L131 PetriNetUnfolder]: For 5242/5306 co-relation queries the response was YES. [2022-11-16 12:37:44,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3563 conditions, 1058 events. 150/1058 cut-off events. For 5242/5306 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6621 event pairs, 59 based on Foata normal form. 9/1029 useless extension candidates. Maximal degree in co-relation 3503. Up to 247 conditions per place. [2022-11-16 12:37:44,351 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 119 selfloop transitions, 27 changer transitions 21/287 dead transitions. [2022-11-16 12:37:44,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 287 transitions, 2348 flow [2022-11-16 12:37:44,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:37:44,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:37:44,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2272 transitions. [2022-11-16 12:37:44,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7603748326639893 [2022-11-16 12:37:44,363 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2272 transitions. [2022-11-16 12:37:44,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2272 transitions. [2022-11-16 12:37:44,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:44,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2272 transitions. [2022-11-16 12:37:44,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.22222222222223) internal successors, (2272), 18 states have internal predecessors, (2272), 0 states have call successors, (0), 0 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 12:37:44,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 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 12:37:44,379 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 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 12:37:44,379 INFO L175 Difference]: Start difference. First operand has 251 places, 220 transitions, 1483 flow. Second operand 18 states and 2272 transitions. [2022-11-16 12:37:44,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 287 transitions, 2348 flow [2022-11-16 12:37:44,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 287 transitions, 2219 flow, removed 57 selfloop flow, removed 9 redundant places. [2022-11-16 12:37:44,416 INFO L231 Difference]: Finished difference. Result has 267 places, 223 transitions, 1586 flow [2022-11-16 12:37:44,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1586, PETRI_PLACES=267, PETRI_TRANSITIONS=223} [2022-11-16 12:37:44,417 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 116 predicate places. [2022-11-16 12:37:44,417 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 223 transitions, 1586 flow [2022-11-16 12:37:44,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:44,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:44,418 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] [2022-11-16 12:37:44,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:37:44,418 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:44,419 INFO L85 PathProgramCache]: Analyzing trace with hash 547184008, now seen corresponding path program 5 times [2022-11-16 12:37:44,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:44,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978115097] [2022-11-16 12:37:44,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:44,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:44,641 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 12:37:44,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:44,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978115097] [2022-11-16 12:37:44,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978115097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:44,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:44,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:44,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915176457] [2022-11-16 12:37:44,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:44,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:44,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:44,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:44,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:44,644 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:44,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 223 transitions, 1586 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:44,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:44,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:44,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:45,089 INFO L130 PetriNetUnfolder]: 146/1054 cut-off events. [2022-11-16 12:37:45,090 INFO L131 PetriNetUnfolder]: For 5856/5918 co-relation queries the response was YES. [2022-11-16 12:37:45,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 1054 events. 146/1054 cut-off events. For 5856/5918 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6597 event pairs, 51 based on Foata normal form. 13/1032 useless extension candidates. Maximal degree in co-relation 3566. Up to 248 conditions per place. [2022-11-16 12:37:45,099 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 115 selfloop transitions, 27 changer transitions 16/278 dead transitions. [2022-11-16 12:37:45,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 278 transitions, 2573 flow [2022-11-16 12:37:45,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:37:45,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:37:45,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1771 transitions. [2022-11-16 12:37:45,102 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620481927710844 [2022-11-16 12:37:45,102 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1771 transitions. [2022-11-16 12:37:45,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1771 transitions. [2022-11-16 12:37:45,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:45,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1771 transitions. [2022-11-16 12:37:45,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 126.5) internal successors, (1771), 14 states have internal predecessors, (1771), 0 states have call successors, (0), 0 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 12:37:45,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:45,114 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 166.0) internal successors, (2490), 15 states have internal predecessors, (2490), 0 states have call successors, (0), 0 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 12:37:45,114 INFO L175 Difference]: Start difference. First operand has 267 places, 223 transitions, 1586 flow. Second operand 14 states and 1771 transitions. [2022-11-16 12:37:45,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 278 transitions, 2573 flow [2022-11-16 12:37:45,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 278 transitions, 2469 flow, removed 49 selfloop flow, removed 12 redundant places. [2022-11-16 12:37:45,149 INFO L231 Difference]: Finished difference. Result has 264 places, 232 transitions, 1810 flow [2022-11-16 12:37:45,151 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1810, PETRI_PLACES=264, PETRI_TRANSITIONS=232} [2022-11-16 12:37:45,151 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 113 predicate places. [2022-11-16 12:37:45,151 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 232 transitions, 1810 flow [2022-11-16 12:37:45,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:45,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:45,152 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] [2022-11-16 12:37:45,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:37:45,153 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash 720716202, now seen corresponding path program 6 times [2022-11-16 12:37:45,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:45,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094044855] [2022-11-16 12:37:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:45,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:45,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:45,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:45,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094044855] [2022-11-16 12:37:45,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094044855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:45,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:45,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:45,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312628941] [2022-11-16 12:37:45,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:45,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:45,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:45,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:45,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:45,362 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:45,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 232 transitions, 1810 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:45,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:45,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:45,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:45,890 INFO L130 PetriNetUnfolder]: 144/1081 cut-off events. [2022-11-16 12:37:45,890 INFO L131 PetriNetUnfolder]: For 5844/5906 co-relation queries the response was YES. [2022-11-16 12:37:45,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3720 conditions, 1081 events. 144/1081 cut-off events. For 5844/5906 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6920 event pairs, 56 based on Foata normal form. 14/1058 useless extension candidates. Maximal degree in co-relation 3657. Up to 249 conditions per place. [2022-11-16 12:37:45,906 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 111 selfloop transitions, 31 changer transitions 17/279 dead transitions. [2022-11-16 12:37:45,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 279 transitions, 2615 flow [2022-11-16 12:37:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:37:45,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:37:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2017 transitions. [2022-11-16 12:37:45,910 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7594126506024096 [2022-11-16 12:37:45,910 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2017 transitions. [2022-11-16 12:37:45,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2017 transitions. [2022-11-16 12:37:45,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:45,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2017 transitions. [2022-11-16 12:37:45,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.0625) internal successors, (2017), 16 states have internal predecessors, (2017), 0 states have call successors, (0), 0 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 12:37:45,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 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 12:37:45,919 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 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 12:37:45,919 INFO L175 Difference]: Start difference. First operand has 264 places, 232 transitions, 1810 flow. Second operand 16 states and 2017 transitions. [2022-11-16 12:37:45,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 279 transitions, 2615 flow [2022-11-16 12:37:45,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 279 transitions, 2489 flow, removed 39 selfloop flow, removed 8 redundant places. [2022-11-16 12:37:45,959 INFO L231 Difference]: Finished difference. Result has 275 places, 238 transitions, 1925 flow [2022-11-16 12:37:45,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1925, PETRI_PLACES=275, PETRI_TRANSITIONS=238} [2022-11-16 12:37:45,960 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 124 predicate places. [2022-11-16 12:37:45,960 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 238 transitions, 1925 flow [2022-11-16 12:37:45,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:45,961 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:45,961 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] [2022-11-16 12:37:45,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:37:45,962 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:45,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:45,962 INFO L85 PathProgramCache]: Analyzing trace with hash -789308982, now seen corresponding path program 3 times [2022-11-16 12:37:45,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:45,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971091013] [2022-11-16 12:37:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:45,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:46,172 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 12:37:46,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:46,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971091013] [2022-11-16 12:37:46,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971091013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:46,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:46,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:46,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95332246] [2022-11-16 12:37:46,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:46,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:46,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:46,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:46,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:46,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:46,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 238 transitions, 1925 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:46,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:46,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:46,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:46,891 INFO L130 PetriNetUnfolder]: 200/1326 cut-off events. [2022-11-16 12:37:46,892 INFO L131 PetriNetUnfolder]: For 7221/7273 co-relation queries the response was YES. [2022-11-16 12:37:46,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4469 conditions, 1326 events. 200/1326 cut-off events. For 7221/7273 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 9144 event pairs, 76 based on Foata normal form. 14/1292 useless extension candidates. Maximal degree in co-relation 4401. Up to 471 conditions per place. [2022-11-16 12:37:46,902 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 139 selfloop transitions, 10 changer transitions 28/303 dead transitions. [2022-11-16 12:37:46,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 303 transitions, 2784 flow [2022-11-16 12:37:46,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:37:46,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:37:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2262 transitions. [2022-11-16 12:37:46,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7570281124497992 [2022-11-16 12:37:46,907 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2262 transitions. [2022-11-16 12:37:46,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2262 transitions. [2022-11-16 12:37:46,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:46,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2262 transitions. [2022-11-16 12:37:46,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 125.66666666666667) internal successors, (2262), 18 states have internal predecessors, (2262), 0 states have call successors, (0), 0 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 12:37:46,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 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 12:37:46,916 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 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 12:37:46,917 INFO L175 Difference]: Start difference. First operand has 275 places, 238 transitions, 1925 flow. Second operand 18 states and 2262 transitions. [2022-11-16 12:37:46,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 303 transitions, 2784 flow [2022-11-16 12:37:46,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 303 transitions, 2702 flow, removed 31 selfloop flow, removed 10 redundant places. [2022-11-16 12:37:46,959 INFO L231 Difference]: Finished difference. Result has 288 places, 242 transitions, 1967 flow [2022-11-16 12:37:46,960 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1967, PETRI_PLACES=288, PETRI_TRANSITIONS=242} [2022-11-16 12:37:46,961 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 137 predicate places. [2022-11-16 12:37:46,961 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 242 transitions, 1967 flow [2022-11-16 12:37:46,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:46,962 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:46,962 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] [2022-11-16 12:37:46,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:37:46,963 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:46,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:46,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1258566644, now seen corresponding path program 7 times [2022-11-16 12:37:46,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:46,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224618927] [2022-11-16 12:37:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:46,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:47,209 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 12:37:47,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:47,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224618927] [2022-11-16 12:37:47,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224618927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:47,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:47,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:47,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871230294] [2022-11-16 12:37:47,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:47,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:47,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:47,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:47,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:47,213 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:47,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 242 transitions, 1967 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:47,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:47,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:47,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:47,733 INFO L130 PetriNetUnfolder]: 154/1156 cut-off events. [2022-11-16 12:37:47,733 INFO L131 PetriNetUnfolder]: For 6909/6976 co-relation queries the response was YES. [2022-11-16 12:37:47,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4065 conditions, 1156 events. 154/1156 cut-off events. For 6909/6976 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7719 event pairs, 65 based on Foata normal form. 16/1136 useless extension candidates. Maximal degree in co-relation 3990. Up to 237 conditions per place. [2022-11-16 12:37:47,744 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 113 selfloop transitions, 18 changer transitions 30/282 dead transitions. [2022-11-16 12:37:47,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 282 transitions, 2664 flow [2022-11-16 12:37:47,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:37:47,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:37:47,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2132 transitions. [2022-11-16 12:37:47,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7554925584691708 [2022-11-16 12:37:47,749 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2132 transitions. [2022-11-16 12:37:47,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2132 transitions. [2022-11-16 12:37:47,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:47,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2132 transitions. [2022-11-16 12:37:47,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.41176470588235) internal successors, (2132), 17 states have internal predecessors, (2132), 0 states have call successors, (0), 0 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 12:37:47,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:47,758 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:47,758 INFO L175 Difference]: Start difference. First operand has 288 places, 242 transitions, 1967 flow. Second operand 17 states and 2132 transitions. [2022-11-16 12:37:47,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 282 transitions, 2664 flow [2022-11-16 12:37:47,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 282 transitions, 2608 flow, removed 25 selfloop flow, removed 12 redundant places. [2022-11-16 12:37:47,804 INFO L231 Difference]: Finished difference. Result has 285 places, 226 transitions, 1693 flow [2022-11-16 12:37:47,804 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1929, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1693, PETRI_PLACES=285, PETRI_TRANSITIONS=226} [2022-11-16 12:37:47,805 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 134 predicate places. [2022-11-16 12:37:47,805 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 226 transitions, 1693 flow [2022-11-16 12:37:47,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:47,806 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:47,806 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] [2022-11-16 12:37:47,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:37:47,806 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:47,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash -654492566, now seen corresponding path program 8 times [2022-11-16 12:37:47,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:47,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423119281] [2022-11-16 12:37:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:47,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:48,032 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 12:37:48,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:48,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423119281] [2022-11-16 12:37:48,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423119281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:48,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:48,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:48,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936380787] [2022-11-16 12:37:48,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:48,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:48,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:48,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:48,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:48,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:48,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 226 transitions, 1693 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:48,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:48,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:48,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:48,541 INFO L130 PetriNetUnfolder]: 142/1102 cut-off events. [2022-11-16 12:37:48,541 INFO L131 PetriNetUnfolder]: For 5614/5679 co-relation queries the response was YES. [2022-11-16 12:37:48,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 1102 events. 142/1102 cut-off events. For 5614/5679 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7178 event pairs, 70 based on Foata normal form. 13/1078 useless extension candidates. Maximal degree in co-relation 3648. Up to 232 conditions per place. [2022-11-16 12:37:48,551 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 101 selfloop transitions, 10 changer transitions 24/256 dead transitions. [2022-11-16 12:37:48,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 256 transitions, 2188 flow [2022-11-16 12:37:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:48,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1886 transitions. [2022-11-16 12:37:48,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.757429718875502 [2022-11-16 12:37:48,555 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1886 transitions. [2022-11-16 12:37:48,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1886 transitions. [2022-11-16 12:37:48,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:48,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1886 transitions. [2022-11-16 12:37:48,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.73333333333333) internal successors, (1886), 15 states have internal predecessors, (1886), 0 states have call successors, (0), 0 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 12:37:48,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:48,563 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:48,563 INFO L175 Difference]: Start difference. First operand has 285 places, 226 transitions, 1693 flow. Second operand 15 states and 1886 transitions. [2022-11-16 12:37:48,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 256 transitions, 2188 flow [2022-11-16 12:37:48,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 256 transitions, 2103 flow, removed 18 selfloop flow, removed 12 redundant places. [2022-11-16 12:37:48,602 INFO L231 Difference]: Finished difference. Result has 277 places, 212 transitions, 1394 flow [2022-11-16 12:37:48,602 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1629, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1394, PETRI_PLACES=277, PETRI_TRANSITIONS=212} [2022-11-16 12:37:48,603 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 126 predicate places. [2022-11-16 12:37:48,603 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 212 transitions, 1394 flow [2022-11-16 12:37:48,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:48,604 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:48,604 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] [2022-11-16 12:37:48,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:37:48,604 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:48,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:48,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2016635402, now seen corresponding path program 9 times [2022-11-16 12:37:48,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:48,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840628558] [2022-11-16 12:37:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:48,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:48,782 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 12:37:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:48,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840628558] [2022-11-16 12:37:48,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840628558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:48,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:48,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:48,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049899177] [2022-11-16 12:37:48,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:48,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:48,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:48,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:48,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:48,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 212 transitions, 1394 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:48,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:48,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:48,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:49,257 INFO L130 PetriNetUnfolder]: 138/1089 cut-off events. [2022-11-16 12:37:49,257 INFO L131 PetriNetUnfolder]: For 4701/4763 co-relation queries the response was YES. [2022-11-16 12:37:49,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3541 conditions, 1089 events. 138/1089 cut-off events. For 4701/4763 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7075 event pairs, 73 based on Foata normal form. 10/1060 useless extension candidates. Maximal degree in co-relation 3474. Up to 266 conditions per place. [2022-11-16 12:37:49,267 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 93 selfloop transitions, 19 changer transitions 19/252 dead transitions. [2022-11-16 12:37:49,267 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 252 transitions, 1991 flow [2022-11-16 12:37:49,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:37:49,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:37:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2131 transitions. [2022-11-16 12:37:49,270 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7551381998582566 [2022-11-16 12:37:49,270 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2131 transitions. [2022-11-16 12:37:49,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2131 transitions. [2022-11-16 12:37:49,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:49,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2131 transitions. [2022-11-16 12:37:49,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.3529411764706) internal successors, (2131), 17 states have internal predecessors, (2131), 0 states have call successors, (0), 0 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 12:37:49,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:49,279 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:49,279 INFO L175 Difference]: Start difference. First operand has 277 places, 212 transitions, 1394 flow. Second operand 17 states and 2131 transitions. [2022-11-16 12:37:49,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 252 transitions, 1991 flow [2022-11-16 12:37:49,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 252 transitions, 1889 flow, removed 30 selfloop flow, removed 14 redundant places. [2022-11-16 12:37:49,310 INFO L231 Difference]: Finished difference. Result has 271 places, 214 transitions, 1436 flow [2022-11-16 12:37:49,311 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1436, PETRI_PLACES=271, PETRI_TRANSITIONS=214} [2022-11-16 12:37:49,311 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 120 predicate places. [2022-11-16 12:37:49,311 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 214 transitions, 1436 flow [2022-11-16 12:37:49,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:49,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:49,312 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] [2022-11-16 12:37:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:37:49,313 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash 147936902, now seen corresponding path program 10 times [2022-11-16 12:37:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:49,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174071070] [2022-11-16 12:37:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:49,546 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 12:37:49,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:49,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174071070] [2022-11-16 12:37:49,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174071070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:49,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:49,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:49,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423732652] [2022-11-16 12:37:49,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:49,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:49,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:49,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:49,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:49,549 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:49,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 214 transitions, 1436 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:49,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:49,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:49,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:49,992 INFO L130 PetriNetUnfolder]: 133/1029 cut-off events. [2022-11-16 12:37:49,992 INFO L131 PetriNetUnfolder]: For 4226/4286 co-relation queries the response was YES. [2022-11-16 12:37:49,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3321 conditions, 1029 events. 133/1029 cut-off events. For 4226/4286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6423 event pairs, 73 based on Foata normal form. 10/1001 useless extension candidates. Maximal degree in co-relation 3253. Up to 249 conditions per place. [2022-11-16 12:37:50,001 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 85 selfloop transitions, 5 changer transitions 32/240 dead transitions. [2022-11-16 12:37:50,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 240 transitions, 1815 flow [2022-11-16 12:37:50,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:50,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1882 transitions. [2022-11-16 12:37:50,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7558232931726908 [2022-11-16 12:37:50,007 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1882 transitions. [2022-11-16 12:37:50,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1882 transitions. [2022-11-16 12:37:50,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:50,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1882 transitions. [2022-11-16 12:37:50,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.46666666666667) internal successors, (1882), 15 states have internal predecessors, (1882), 0 states have call successors, (0), 0 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 12:37:50,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:50,015 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:50,016 INFO L175 Difference]: Start difference. First operand has 271 places, 214 transitions, 1436 flow. Second operand 15 states and 1882 transitions. [2022-11-16 12:37:50,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 240 transitions, 1815 flow [2022-11-16 12:37:50,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 240 transitions, 1756 flow, removed 17 selfloop flow, removed 11 redundant places. [2022-11-16 12:37:50,045 INFO L231 Difference]: Finished difference. Result has 269 places, 192 transitions, 1060 flow [2022-11-16 12:37:50,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1391, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1060, PETRI_PLACES=269, PETRI_TRANSITIONS=192} [2022-11-16 12:37:50,047 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 118 predicate places. [2022-11-16 12:37:50,047 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 192 transitions, 1060 flow [2022-11-16 12:37:50,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:50,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:50,048 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] [2022-11-16 12:37:50,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:37:50,048 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:50,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:50,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1400888416, now seen corresponding path program 4 times [2022-11-16 12:37:50,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:50,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830883280] [2022-11-16 12:37:50,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:50,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:50,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:50,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830883280] [2022-11-16 12:37:50,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830883280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:50,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:50,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849479591] [2022-11-16 12:37:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:50,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:50,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:50,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:50,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 192 transitions, 1060 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:50,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:50,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:50,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:50,744 INFO L130 PetriNetUnfolder]: 138/1046 cut-off events. [2022-11-16 12:37:50,744 INFO L131 PetriNetUnfolder]: For 3688/3721 co-relation queries the response was YES. [2022-11-16 12:37:50,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 1046 events. 138/1046 cut-off events. For 3688/3721 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6525 event pairs, 63 based on Foata normal form. 7/1014 useless extension candidates. Maximal degree in co-relation 3011. Up to 224 conditions per place. [2022-11-16 12:37:50,751 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 105 selfloop transitions, 14 changer transitions 30/268 dead transitions. [2022-11-16 12:37:50,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 268 transitions, 1877 flow [2022-11-16 12:37:50,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:37:50,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:37:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2277 transitions. [2022-11-16 12:37:50,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620481927710844 [2022-11-16 12:37:50,755 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2277 transitions. [2022-11-16 12:37:50,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2277 transitions. [2022-11-16 12:37:50,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:50,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2277 transitions. [2022-11-16 12:37:50,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 126.5) internal successors, (2277), 18 states have internal predecessors, (2277), 0 states have call successors, (0), 0 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 12:37:50,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 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 12:37:50,764 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 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 12:37:50,764 INFO L175 Difference]: Start difference. First operand has 269 places, 192 transitions, 1060 flow. Second operand 18 states and 2277 transitions. [2022-11-16 12:37:50,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 268 transitions, 1877 flow [2022-11-16 12:37:50,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 268 transitions, 1783 flow, removed 31 selfloop flow, removed 17 redundant places. [2022-11-16 12:37:50,786 INFO L231 Difference]: Finished difference. Result has 259 places, 193 transitions, 1076 flow [2022-11-16 12:37:50,786 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=994, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1076, PETRI_PLACES=259, PETRI_TRANSITIONS=193} [2022-11-16 12:37:50,787 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 108 predicate places. [2022-11-16 12:37:50,787 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 193 transitions, 1076 flow [2022-11-16 12:37:50,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:50,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:50,814 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] [2022-11-16 12:37:50,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:37:50,815 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:50,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:50,815 INFO L85 PathProgramCache]: Analyzing trace with hash 286884380, now seen corresponding path program 5 times [2022-11-16 12:37:50,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:50,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542884749] [2022-11-16 12:37:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:50,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:51,064 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 12:37:51,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:51,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542884749] [2022-11-16 12:37:51,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542884749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:51,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:51,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:51,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352289450] [2022-11-16 12:37:51,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:51,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:51,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:51,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:51,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 193 transitions, 1076 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:51,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:51,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:51,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:51,625 INFO L130 PetriNetUnfolder]: 131/1046 cut-off events. [2022-11-16 12:37:51,626 INFO L131 PetriNetUnfolder]: For 4302/4335 co-relation queries the response was YES. [2022-11-16 12:37:51,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3088 conditions, 1046 events. 131/1046 cut-off events. For 4302/4335 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6465 event pairs, 53 based on Foata normal form. 8/1018 useless extension candidates. Maximal degree in co-relation 3023. Up to 324 conditions per place. [2022-11-16 12:37:51,634 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 78 selfloop transitions, 16 changer transitions 25/238 dead transitions. [2022-11-16 12:37:51,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 238 transitions, 1822 flow [2022-11-16 12:37:51,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:37:51,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:37:51,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2125 transitions. [2022-11-16 12:37:51,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7530120481927711 [2022-11-16 12:37:51,638 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2125 transitions. [2022-11-16 12:37:51,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2125 transitions. [2022-11-16 12:37:51,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:51,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2125 transitions. [2022-11-16 12:37:51,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.0) internal successors, (2125), 17 states have internal predecessors, (2125), 0 states have call successors, (0), 0 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 12:37:51,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:51,649 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:51,649 INFO L175 Difference]: Start difference. First operand has 259 places, 193 transitions, 1076 flow. Second operand 17 states and 2125 transitions. [2022-11-16 12:37:51,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 238 transitions, 1822 flow [2022-11-16 12:37:51,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 238 transitions, 1643 flow, removed 63 selfloop flow, removed 17 redundant places. [2022-11-16 12:37:51,670 INFO L231 Difference]: Finished difference. Result has 257 places, 200 transitions, 1135 flow [2022-11-16 12:37:51,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1135, PETRI_PLACES=257, PETRI_TRANSITIONS=200} [2022-11-16 12:37:51,671 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 106 predicate places. [2022-11-16 12:37:51,671 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 200 transitions, 1135 flow [2022-11-16 12:37:51,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:51,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:51,672 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] [2022-11-16 12:37:51,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:37:51,673 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:51,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1256242668, now seen corresponding path program 6 times [2022-11-16 12:37:51,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:51,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015452776] [2022-11-16 12:37:51,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:51,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:51,883 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 12:37:51,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:51,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015452776] [2022-11-16 12:37:51,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015452776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:51,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:51,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:51,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537224436] [2022-11-16 12:37:51,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:51,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:51,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:51,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:51,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:51,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:51,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 200 transitions, 1135 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:51,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:51,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:51,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:52,298 INFO L130 PetriNetUnfolder]: 125/1016 cut-off events. [2022-11-16 12:37:52,298 INFO L131 PetriNetUnfolder]: For 3712/3739 co-relation queries the response was YES. [2022-11-16 12:37:52,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 1016 events. 125/1016 cut-off events. For 3712/3739 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6223 event pairs, 44 based on Foata normal form. 4/981 useless extension candidates. Maximal degree in co-relation 2895. Up to 306 conditions per place. [2022-11-16 12:37:52,307 INFO L137 encePairwiseOnDemand]: 150/166 looper letters, 74 selfloop transitions, 23 changer transitions 21/237 dead transitions. [2022-11-16 12:37:52,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 237 transitions, 1779 flow [2022-11-16 12:37:52,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:52,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1879 transitions. [2022-11-16 12:37:52,310 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7546184738955823 [2022-11-16 12:37:52,310 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1879 transitions. [2022-11-16 12:37:52,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1879 transitions. [2022-11-16 12:37:52,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:52,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1879 transitions. [2022-11-16 12:37:52,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.26666666666667) internal successors, (1879), 15 states have internal predecessors, (1879), 0 states have call successors, (0), 0 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 12:37:52,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:52,318 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:52,318 INFO L175 Difference]: Start difference. First operand has 257 places, 200 transitions, 1135 flow. Second operand 15 states and 1879 transitions. [2022-11-16 12:37:52,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 237 transitions, 1779 flow [2022-11-16 12:37:52,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 237 transitions, 1676 flow, removed 39 selfloop flow, removed 10 redundant places. [2022-11-16 12:37:52,341 INFO L231 Difference]: Finished difference. Result has 258 places, 206 transitions, 1246 flow [2022-11-16 12:37:52,341 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1090, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1246, PETRI_PLACES=258, PETRI_TRANSITIONS=206} [2022-11-16 12:37:52,342 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 107 predicate places. [2022-11-16 12:37:52,342 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 206 transitions, 1246 flow [2022-11-16 12:37:52,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:52,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:52,343 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] [2022-11-16 12:37:52,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:37:52,343 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:52,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:52,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1350350494, now seen corresponding path program 7 times [2022-11-16 12:37:52,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:52,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678239587] [2022-11-16 12:37:52,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:52,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:52,548 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 12:37:52,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:52,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678239587] [2022-11-16 12:37:52,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678239587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:52,549 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:52,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:52,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896239705] [2022-11-16 12:37:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:52,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:52,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:52,552 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:52,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 206 transitions, 1246 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:52,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:52,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:52,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:53,111 INFO L130 PetriNetUnfolder]: 118/951 cut-off events. [2022-11-16 12:37:53,111 INFO L131 PetriNetUnfolder]: For 3203/3230 co-relation queries the response was YES. [2022-11-16 12:37:53,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 951 events. 118/951 cut-off events. For 3203/3230 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 5561 event pairs, 51 based on Foata normal form. 4/917 useless extension candidates. Maximal degree in co-relation 2658. Up to 305 conditions per place. [2022-11-16 12:37:53,118 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 68 selfloop transitions, 6 changer transitions 27/220 dead transitions. [2022-11-16 12:37:53,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 220 transitions, 1533 flow [2022-11-16 12:37:53,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:53,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1869 transitions. [2022-11-16 12:37:53,121 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7506024096385542 [2022-11-16 12:37:53,121 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1869 transitions. [2022-11-16 12:37:53,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1869 transitions. [2022-11-16 12:37:53,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:53,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1869 transitions. [2022-11-16 12:37:53,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.6) internal successors, (1869), 15 states have internal predecessors, (1869), 0 states have call successors, (0), 0 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 12:37:53,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:53,129 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:53,129 INFO L175 Difference]: Start difference. First operand has 258 places, 206 transitions, 1246 flow. Second operand 15 states and 1869 transitions. [2022-11-16 12:37:53,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 220 transitions, 1533 flow [2022-11-16 12:37:53,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 220 transitions, 1451 flow, removed 32 selfloop flow, removed 8 redundant places. [2022-11-16 12:37:53,151 INFO L231 Difference]: Finished difference. Result has 261 places, 190 transitions, 1020 flow [2022-11-16 12:37:53,152 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1020, PETRI_PLACES=261, PETRI_TRANSITIONS=190} [2022-11-16 12:37:53,152 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 110 predicate places. [2022-11-16 12:37:53,153 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 190 transitions, 1020 flow [2022-11-16 12:37:53,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:53,153 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:53,153 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] [2022-11-16 12:37:53,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:37:53,154 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1805300492, now seen corresponding path program 8 times [2022-11-16 12:37:53,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:53,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580814829] [2022-11-16 12:37:53,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:53,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:53,336 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 12:37:53,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:53,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580814829] [2022-11-16 12:37:53,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580814829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:53,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:53,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143064307] [2022-11-16 12:37:53,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:53,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:53,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:53,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:53,339 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:53,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 190 transitions, 1020 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:53,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:53,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:53,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:53,811 INFO L130 PetriNetUnfolder]: 133/981 cut-off events. [2022-11-16 12:37:53,811 INFO L131 PetriNetUnfolder]: For 3410/3429 co-relation queries the response was YES. [2022-11-16 12:37:53,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2889 conditions, 981 events. 133/981 cut-off events. For 3410/3429 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5825 event pairs, 56 based on Foata normal form. 5/948 useless extension candidates. Maximal degree in co-relation 2831. Up to 198 conditions per place. [2022-11-16 12:37:53,820 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 90 selfloop transitions, 19 changer transitions 25/253 dead transitions. [2022-11-16 12:37:53,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 253 transitions, 1843 flow [2022-11-16 12:37:53,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:37:53,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:37:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2024 transitions. [2022-11-16 12:37:53,823 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7620481927710844 [2022-11-16 12:37:53,823 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2024 transitions. [2022-11-16 12:37:53,824 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2024 transitions. [2022-11-16 12:37:53,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:53,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2024 transitions. [2022-11-16 12:37:53,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.5) internal successors, (2024), 16 states have internal predecessors, (2024), 0 states have call successors, (0), 0 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 12:37:53,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 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 12:37:53,831 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 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 12:37:53,831 INFO L175 Difference]: Start difference. First operand has 261 places, 190 transitions, 1020 flow. Second operand 16 states and 2024 transitions. [2022-11-16 12:37:53,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 253 transitions, 1843 flow [2022-11-16 12:37:53,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 253 transitions, 1738 flow, removed 20 selfloop flow, removed 11 redundant places. [2022-11-16 12:37:53,851 INFO L231 Difference]: Finished difference. Result has 254 places, 198 transitions, 1146 flow [2022-11-16 12:37:53,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1146, PETRI_PLACES=254, PETRI_TRANSITIONS=198} [2022-11-16 12:37:53,854 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 103 predicate places. [2022-11-16 12:37:53,855 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 198 transitions, 1146 flow [2022-11-16 12:37:53,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:53,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:53,855 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] [2022-11-16 12:37:53,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:37:53,856 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:53,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:53,856 INFO L85 PathProgramCache]: Analyzing trace with hash -291250686, now seen corresponding path program 9 times [2022-11-16 12:37:53,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:53,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701420171] [2022-11-16 12:37:53,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:53,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:54,062 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 12:37:54,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:54,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701420171] [2022-11-16 12:37:54,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701420171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:54,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:54,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:54,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349959823] [2022-11-16 12:37:54,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:54,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:54,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:54,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:54,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:54,066 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:54,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 198 transitions, 1146 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:54,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:54,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:54,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:54,442 INFO L130 PetriNetUnfolder]: 129/984 cut-off events. [2022-11-16 12:37:54,442 INFO L131 PetriNetUnfolder]: For 4192/4214 co-relation queries the response was YES. [2022-11-16 12:37:54,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3007 conditions, 984 events. 129/984 cut-off events. For 4192/4214 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5928 event pairs, 54 based on Foata normal form. 5/953 useless extension candidates. Maximal degree in co-relation 2945. Up to 227 conditions per place. [2022-11-16 12:37:54,449 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 89 selfloop transitions, 23 changer transitions 21/252 dead transitions. [2022-11-16 12:37:54,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 252 transitions, 1950 flow [2022-11-16 12:37:54,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:54,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1897 transitions. [2022-11-16 12:37:54,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.761847389558233 [2022-11-16 12:37:54,454 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1897 transitions. [2022-11-16 12:37:54,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1897 transitions. [2022-11-16 12:37:54,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:54,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1897 transitions. [2022-11-16 12:37:54,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 126.46666666666667) internal successors, (1897), 15 states have internal predecessors, (1897), 0 states have call successors, (0), 0 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 12:37:54,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:54,474 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:54,474 INFO L175 Difference]: Start difference. First operand has 254 places, 198 transitions, 1146 flow. Second operand 15 states and 1897 transitions. [2022-11-16 12:37:54,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 252 transitions, 1950 flow [2022-11-16 12:37:54,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 252 transitions, 1819 flow, removed 57 selfloop flow, removed 10 redundant places. [2022-11-16 12:37:54,497 INFO L231 Difference]: Finished difference. Result has 258 places, 207 transitions, 1321 flow [2022-11-16 12:37:54,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1321, PETRI_PLACES=258, PETRI_TRANSITIONS=207} [2022-11-16 12:37:54,499 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 107 predicate places. [2022-11-16 12:37:54,499 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 207 transitions, 1321 flow [2022-11-16 12:37:54,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:54,499 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:54,499 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] [2022-11-16 12:37:54,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:37:54,500 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:54,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 154277274, now seen corresponding path program 10 times [2022-11-16 12:37:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:54,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411372325] [2022-11-16 12:37:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:54,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:37:54,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:54,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411372325] [2022-11-16 12:37:54,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411372325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:54,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:54,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:54,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698232509] [2022-11-16 12:37:54,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:54,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:54,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:54,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:54,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:54,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:54,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 207 transitions, 1321 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:54,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:54,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:54,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:55,203 INFO L130 PetriNetUnfolder]: 123/966 cut-off events. [2022-11-16 12:37:55,203 INFO L131 PetriNetUnfolder]: For 3826/3850 co-relation queries the response was YES. [2022-11-16 12:37:55,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2916 conditions, 966 events. 123/966 cut-off events. For 3826/3850 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5762 event pairs, 50 based on Foata normal form. 7/940 useless extension candidates. Maximal degree in co-relation 2853. Up to 210 conditions per place. [2022-11-16 12:37:55,212 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 90 selfloop transitions, 21 changer transitions 26/256 dead transitions. [2022-11-16 12:37:55,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 256 transitions, 2003 flow [2022-11-16 12:37:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:37:55,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:37:55,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2141 transitions. [2022-11-16 12:37:55,215 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.758681785967399 [2022-11-16 12:37:55,216 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2141 transitions. [2022-11-16 12:37:55,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2141 transitions. [2022-11-16 12:37:55,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:55,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2141 transitions. [2022-11-16 12:37:55,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.94117647058823) internal successors, (2141), 17 states have internal predecessors, (2141), 0 states have call successors, (0), 0 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 12:37:55,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:55,223 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:55,223 INFO L175 Difference]: Start difference. First operand has 258 places, 207 transitions, 1321 flow. Second operand 17 states and 2141 transitions. [2022-11-16 12:37:55,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 256 transitions, 2003 flow [2022-11-16 12:37:55,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 256 transitions, 1837 flow, removed 53 selfloop flow, removed 9 redundant places. [2022-11-16 12:37:55,249 INFO L231 Difference]: Finished difference. Result has 269 places, 208 transitions, 1297 flow [2022-11-16 12:37:55,250 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1297, PETRI_PLACES=269, PETRI_TRANSITIONS=208} [2022-11-16 12:37:55,251 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 118 predicate places. [2022-11-16 12:37:55,251 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 208 transitions, 1297 flow [2022-11-16 12:37:55,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:55,251 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:55,252 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] [2022-11-16 12:37:55,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:37:55,252 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:55,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash 487889192, now seen corresponding path program 11 times [2022-11-16 12:37:55,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:55,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778692599] [2022-11-16 12:37:55,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:55,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:55,447 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 12:37:55,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:55,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778692599] [2022-11-16 12:37:55,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778692599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:55,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:55,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:55,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941288724] [2022-11-16 12:37:55,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:55,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:55,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:55,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:55,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:55,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:55,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 208 transitions, 1297 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:55,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:55,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:55,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:55,835 INFO L130 PetriNetUnfolder]: 113/909 cut-off events. [2022-11-16 12:37:55,835 INFO L131 PetriNetUnfolder]: For 3178/3197 co-relation queries the response was YES. [2022-11-16 12:37:55,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 909 events. 113/909 cut-off events. For 3178/3197 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5231 event pairs, 52 based on Foata normal form. 5/878 useless extension candidates. Maximal degree in co-relation 2575. Up to 206 conditions per place. [2022-11-16 12:37:55,843 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 84 selfloop transitions, 12 changer transitions 25/240 dead transitions. [2022-11-16 12:37:55,843 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 240 transitions, 1727 flow [2022-11-16 12:37:55,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:55,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1889 transitions. [2022-11-16 12:37:55,847 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7586345381526104 [2022-11-16 12:37:55,847 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1889 transitions. [2022-11-16 12:37:55,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1889 transitions. [2022-11-16 12:37:55,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:55,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1889 transitions. [2022-11-16 12:37:55,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.93333333333334) internal successors, (1889), 15 states have internal predecessors, (1889), 0 states have call successors, (0), 0 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 12:37:55,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:55,854 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:55,854 INFO L175 Difference]: Start difference. First operand has 269 places, 208 transitions, 1297 flow. Second operand 15 states and 1889 transitions. [2022-11-16 12:37:55,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 240 transitions, 1727 flow [2022-11-16 12:37:55,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 240 transitions, 1607 flow, removed 29 selfloop flow, removed 15 redundant places. [2022-11-16 12:37:55,878 INFO L231 Difference]: Finished difference. Result has 263 places, 195 transitions, 1090 flow [2022-11-16 12:37:55,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1090, PETRI_PLACES=263, PETRI_TRANSITIONS=195} [2022-11-16 12:37:55,879 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 112 predicate places. [2022-11-16 12:37:55,879 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 195 transitions, 1090 flow [2022-11-16 12:37:55,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:55,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:55,880 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] [2022-11-16 12:37:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:37:55,881 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1371685308, now seen corresponding path program 12 times [2022-11-16 12:37:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:55,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436468875] [2022-11-16 12:37:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:56,066 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 12:37:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:56,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436468875] [2022-11-16 12:37:56,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436468875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:56,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:56,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:56,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912290506] [2022-11-16 12:37:56,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:56,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:56,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:56,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:56,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:56,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:56,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 195 transitions, 1090 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:56,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:56,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:56,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:56,544 INFO L130 PetriNetUnfolder]: 114/909 cut-off events. [2022-11-16 12:37:56,545 INFO L131 PetriNetUnfolder]: For 2581/2600 co-relation queries the response was YES. [2022-11-16 12:37:56,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 909 events. 114/909 cut-off events. For 2581/2600 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5226 event pairs, 49 based on Foata normal form. 5/879 useless extension candidates. Maximal degree in co-relation 2493. Up to 166 conditions per place. [2022-11-16 12:37:56,553 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 94 selfloop transitions, 16 changer transitions 31/260 dead transitions. [2022-11-16 12:37:56,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 260 transitions, 1766 flow [2022-11-16 12:37:56,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:37:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:37:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2398 transitions. [2022-11-16 12:37:56,556 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7603043753963221 [2022-11-16 12:37:56,557 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2398 transitions. [2022-11-16 12:37:56,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2398 transitions. [2022-11-16 12:37:56,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:56,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2398 transitions. [2022-11-16 12:37:56,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 126.21052631578948) internal successors, (2398), 19 states have internal predecessors, (2398), 0 states have call successors, (0), 0 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 12:37:56,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 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 12:37:56,569 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 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 12:37:56,569 INFO L175 Difference]: Start difference. First operand has 263 places, 195 transitions, 1090 flow. Second operand 19 states and 2398 transitions. [2022-11-16 12:37:56,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 260 transitions, 1766 flow [2022-11-16 12:37:56,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 260 transitions, 1670 flow, removed 23 selfloop flow, removed 13 redundant places. [2022-11-16 12:37:56,588 INFO L231 Difference]: Finished difference. Result has 260 places, 191 transitions, 1049 flow [2022-11-16 12:37:56,589 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1049, PETRI_PLACES=260, PETRI_TRANSITIONS=191} [2022-11-16 12:37:56,589 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 109 predicate places. [2022-11-16 12:37:56,589 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 191 transitions, 1049 flow [2022-11-16 12:37:56,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:56,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:56,590 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] [2022-11-16 12:37:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:37:56,590 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1443164602, now seen corresponding path program 13 times [2022-11-16 12:37:56,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:56,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949453109] [2022-11-16 12:37:56,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:56,804 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 12:37:56,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:56,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949453109] [2022-11-16 12:37:56,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949453109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:56,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:56,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:56,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371685625] [2022-11-16 12:37:56,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:56,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:56,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:56,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:56,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:56,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:56,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 191 transitions, 1049 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:56,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:56,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:56,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:57,257 INFO L130 PetriNetUnfolder]: 110/892 cut-off events. [2022-11-16 12:37:57,257 INFO L131 PetriNetUnfolder]: For 2659/2678 co-relation queries the response was YES. [2022-11-16 12:37:57,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2528 conditions, 892 events. 110/892 cut-off events. For 2659/2678 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 5097 event pairs, 52 based on Foata normal form. 5/860 useless extension candidates. Maximal degree in co-relation 2466. Up to 187 conditions per place. [2022-11-16 12:37:57,261 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 78 selfloop transitions, 20 changer transitions 23/240 dead transitions. [2022-11-16 12:37:57,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 240 transitions, 1689 flow [2022-11-16 12:37:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:37:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-16 12:37:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2018 transitions. [2022-11-16 12:37:57,266 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.759789156626506 [2022-11-16 12:37:57,266 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2018 transitions. [2022-11-16 12:37:57,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2018 transitions. [2022-11-16 12:37:57,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:57,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2018 transitions. [2022-11-16 12:37:57,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 126.125) internal successors, (2018), 16 states have internal predecessors, (2018), 0 states have call successors, (0), 0 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 12:37:57,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 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 12:37:57,278 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 166.0) internal successors, (2822), 17 states have internal predecessors, (2822), 0 states have call successors, (0), 0 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 12:37:57,278 INFO L175 Difference]: Start difference. First operand has 260 places, 191 transitions, 1049 flow. Second operand 16 states and 2018 transitions. [2022-11-16 12:37:57,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 240 transitions, 1689 flow [2022-11-16 12:37:57,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 240 transitions, 1558 flow, removed 37 selfloop flow, removed 18 redundant places. [2022-11-16 12:37:57,298 INFO L231 Difference]: Finished difference. Result has 255 places, 198 transitions, 1151 flow [2022-11-16 12:37:57,298 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1151, PETRI_PLACES=255, PETRI_TRANSITIONS=198} [2022-11-16 12:37:57,299 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 104 predicate places. [2022-11-16 12:37:57,299 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 198 transitions, 1151 flow [2022-11-16 12:37:57,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:57,299 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:57,300 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] [2022-11-16 12:37:57,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:37:57,300 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:57,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:57,300 INFO L85 PathProgramCache]: Analyzing trace with hash 791240876, now seen corresponding path program 14 times [2022-11-16 12:37:57,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:57,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279005119] [2022-11-16 12:37:57,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:57,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:57,483 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 12:37:57,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:57,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279005119] [2022-11-16 12:37:57,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279005119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:57,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:57,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241673912] [2022-11-16 12:37:57,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:57,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:57,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:57,487 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:57,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 198 transitions, 1151 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:57,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:57,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:57,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:57,858 INFO L130 PetriNetUnfolder]: 103/877 cut-off events. [2022-11-16 12:37:57,858 INFO L131 PetriNetUnfolder]: For 2344/2363 co-relation queries the response was YES. [2022-11-16 12:37:57,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 877 events. 103/877 cut-off events. For 2344/2363 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4989 event pairs, 49 based on Foata normal form. 5/847 useless extension candidates. Maximal degree in co-relation 2337. Up to 184 conditions per place. [2022-11-16 12:37:57,866 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 75 selfloop transitions, 10 changer transitions 28/232 dead transitions. [2022-11-16 12:37:57,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 232 transitions, 1534 flow [2022-11-16 12:37:57,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:37:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:37:57,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2134 transitions. [2022-11-16 12:37:57,874 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7562012756909993 [2022-11-16 12:37:57,874 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2134 transitions. [2022-11-16 12:37:57,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2134 transitions. [2022-11-16 12:37:57,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:57,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2134 transitions. [2022-11-16 12:37:57,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 125.52941176470588) internal successors, (2134), 17 states have internal predecessors, (2134), 0 states have call successors, (0), 0 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 12:37:57,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:57,882 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:37:57,883 INFO L175 Difference]: Start difference. First operand has 255 places, 198 transitions, 1151 flow. Second operand 17 states and 2134 transitions. [2022-11-16 12:37:57,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 232 transitions, 1534 flow [2022-11-16 12:37:57,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 232 transitions, 1445 flow, removed 29 selfloop flow, removed 9 redundant places. [2022-11-16 12:37:57,902 INFO L231 Difference]: Finished difference. Result has 258 places, 184 transitions, 938 flow [2022-11-16 12:37:57,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1075, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=938, PETRI_PLACES=258, PETRI_TRANSITIONS=184} [2022-11-16 12:37:57,903 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 107 predicate places. [2022-11-16 12:37:57,903 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 184 transitions, 938 flow [2022-11-16 12:37:57,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:57,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:57,904 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] [2022-11-16 12:37:57,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 12:37:57,904 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:57,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:57,905 INFO L85 PathProgramCache]: Analyzing trace with hash 212266352, now seen corresponding path program 15 times [2022-11-16 12:37:57,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:57,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800779510] [2022-11-16 12:37:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:57,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:58,088 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 12:37:58,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:58,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800779510] [2022-11-16 12:37:58,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800779510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:58,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:58,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:58,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041273692] [2022-11-16 12:37:58,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:58,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:58,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:58,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:58,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:58,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:58,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 184 transitions, 938 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:58,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:58,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:58,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:58,472 INFO L130 PetriNetUnfolder]: 96/804 cut-off events. [2022-11-16 12:37:58,472 INFO L131 PetriNetUnfolder]: For 2132/2151 co-relation queries the response was YES. [2022-11-16 12:37:58,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 804 events. 96/804 cut-off events. For 2132/2151 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4294 event pairs, 49 based on Foata normal form. 5/774 useless extension candidates. Maximal degree in co-relation 2082. Up to 166 conditions per place. [2022-11-16 12:37:58,475 INFO L137 encePairwiseOnDemand]: 153/166 looper letters, 65 selfloop transitions, 4 changer transitions 31/215 dead transitions. [2022-11-16 12:37:58,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 215 transitions, 1256 flow [2022-11-16 12:37:58,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:58,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1884 transitions. [2022-11-16 12:37:58,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7566265060240964 [2022-11-16 12:37:58,480 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1884 transitions. [2022-11-16 12:37:58,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1884 transitions. [2022-11-16 12:37:58,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:58,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1884 transitions. [2022-11-16 12:37:58,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 125.6) internal successors, (1884), 15 states have internal predecessors, (1884), 0 states have call successors, (0), 0 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 12:37:58,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:58,488 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:58,489 INFO L175 Difference]: Start difference. First operand has 258 places, 184 transitions, 938 flow. Second operand 15 states and 1884 transitions. [2022-11-16 12:37:58,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 215 transitions, 1256 flow [2022-11-16 12:37:58,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 215 transitions, 1169 flow, removed 17 selfloop flow, removed 19 redundant places. [2022-11-16 12:37:58,504 INFO L231 Difference]: Finished difference. Result has 240 places, 166 transitions, 724 flow [2022-11-16 12:37:58,504 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=724, PETRI_PLACES=240, PETRI_TRANSITIONS=166} [2022-11-16 12:37:58,504 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 89 predicate places. [2022-11-16 12:37:58,505 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 166 transitions, 724 flow [2022-11-16 12:37:58,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:58,505 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:58,505 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] [2022-11-16 12:37:58,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-16 12:37:58,506 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:58,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:58,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1124673564, now seen corresponding path program 11 times [2022-11-16 12:37:58,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:58,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051906334] [2022-11-16 12:37:58,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:58,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:58,688 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 12:37:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:58,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051906334] [2022-11-16 12:37:58,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051906334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:58,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:58,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:58,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037507490] [2022-11-16 12:37:58,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:58,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:58,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:58,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:58,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:58,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:58,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 166 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:58,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:58,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:58,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:59,134 INFO L130 PetriNetUnfolder]: 73/688 cut-off events. [2022-11-16 12:37:59,134 INFO L131 PetriNetUnfolder]: For 1759/1778 co-relation queries the response was YES. [2022-11-16 12:37:59,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1826 conditions, 688 events. 73/688 cut-off events. For 1759/1778 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3409 event pairs, 34 based on Foata normal form. 3/662 useless extension candidates. Maximal degree in co-relation 1777. Up to 155 conditions per place. [2022-11-16 12:37:59,138 INFO L137 encePairwiseOnDemand]: 151/166 looper letters, 66 selfloop transitions, 8 changer transitions 26/215 dead transitions. [2022-11-16 12:37:59,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 215 transitions, 1249 flow [2022-11-16 12:37:59,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-16 12:37:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-16 12:37:59,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2370 transitions. [2022-11-16 12:37:59,142 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.75142675967026 [2022-11-16 12:37:59,142 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2370 transitions. [2022-11-16 12:37:59,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2370 transitions. [2022-11-16 12:37:59,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:59,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2370 transitions. [2022-11-16 12:37:59,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 124.73684210526316) internal successors, (2370), 19 states have internal predecessors, (2370), 0 states have call successors, (0), 0 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 12:37:59,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 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 12:37:59,151 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 166.0) internal successors, (3320), 20 states have internal predecessors, (3320), 0 states have call successors, (0), 0 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 12:37:59,152 INFO L175 Difference]: Start difference. First operand has 240 places, 166 transitions, 724 flow. Second operand 19 states and 2370 transitions. [2022-11-16 12:37:59,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 215 transitions, 1249 flow [2022-11-16 12:37:59,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 215 transitions, 1199 flow, removed 16 selfloop flow, removed 9 redundant places. [2022-11-16 12:37:59,164 INFO L231 Difference]: Finished difference. Result has 233 places, 164 transitions, 724 flow [2022-11-16 12:37:59,164 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=724, PETRI_PLACES=233, PETRI_TRANSITIONS=164} [2022-11-16 12:37:59,165 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 82 predicate places. [2022-11-16 12:37:59,165 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 164 transitions, 724 flow [2022-11-16 12:37:59,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:59,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:59,166 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] [2022-11-16 12:37:59,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-16 12:37:59,166 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:59,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:59,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1207614922, now seen corresponding path program 12 times [2022-11-16 12:37:59,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:59,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046623060] [2022-11-16 12:37:59,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:59,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:59,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:59,344 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 12:37:59,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:59,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046623060] [2022-11-16 12:37:59,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046623060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:59,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:59,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:59,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890285784] [2022-11-16 12:37:59,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:59,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:59,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:59,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:59,347 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:59,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 164 transitions, 724 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:59,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:59,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:59,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:37:59,740 INFO L130 PetriNetUnfolder]: 71/662 cut-off events. [2022-11-16 12:37:59,741 INFO L131 PetriNetUnfolder]: For 1753/1772 co-relation queries the response was YES. [2022-11-16 12:37:59,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 662 events. 71/662 cut-off events. For 1753/1772 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3170 event pairs, 34 based on Foata normal form. 2/635 useless extension candidates. Maximal degree in co-relation 1721. Up to 185 conditions per place. [2022-11-16 12:37:59,746 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 49 selfloop transitions, 13 changer transitions 16/193 dead transitions. [2022-11-16 12:37:59,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 193 transitions, 1213 flow [2022-11-16 12:37:59,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:37:59,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:37:59,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1864 transitions. [2022-11-16 12:37:59,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7485943775100402 [2022-11-16 12:37:59,750 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1864 transitions. [2022-11-16 12:37:59,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1864 transitions. [2022-11-16 12:37:59,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:37:59,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1864 transitions. [2022-11-16 12:37:59,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 124.26666666666667) internal successors, (1864), 15 states have internal predecessors, (1864), 0 states have call successors, (0), 0 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 12:37:59,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:59,757 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:37:59,757 INFO L175 Difference]: Start difference. First operand has 233 places, 164 transitions, 724 flow. Second operand 15 states and 1864 transitions. [2022-11-16 12:37:59,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 193 transitions, 1213 flow [2022-11-16 12:37:59,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 193 transitions, 1101 flow, removed 53 selfloop flow, removed 15 redundant places. [2022-11-16 12:37:59,769 INFO L231 Difference]: Finished difference. Result has 227 places, 173 transitions, 851 flow [2022-11-16 12:37:59,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=851, PETRI_PLACES=227, PETRI_TRANSITIONS=173} [2022-11-16 12:37:59,770 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 76 predicate places. [2022-11-16 12:37:59,770 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 173 transitions, 851 flow [2022-11-16 12:37:59,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:59,770 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:37:59,771 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] [2022-11-16 12:37:59,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-16 12:37:59,771 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:37:59,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:37:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash 864236214, now seen corresponding path program 13 times [2022-11-16 12:37:59,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:37:59,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184859856] [2022-11-16 12:37:59,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:37:59,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:37:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:37:59,978 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 12:37:59,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:37:59,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184859856] [2022-11-16 12:37:59,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184859856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:37:59,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:37:59,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:37:59,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864869776] [2022-11-16 12:37:59,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:37:59,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:37:59,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:37:59,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:37:59,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:37:59,982 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:37:59,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 173 transitions, 851 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:37:59,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:37:59,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:37:59,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:00,389 INFO L130 PetriNetUnfolder]: 71/654 cut-off events. [2022-11-16 12:38:00,389 INFO L131 PetriNetUnfolder]: For 1692/1711 co-relation queries the response was YES. [2022-11-16 12:38:00,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1792 conditions, 654 events. 71/654 cut-off events. For 1692/1711 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3127 event pairs, 34 based on Foata normal form. 2/627 useless extension candidates. Maximal degree in co-relation 1741. Up to 158 conditions per place. [2022-11-16 12:38:00,392 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 68 selfloop transitions, 9 changer transitions 21/213 dead transitions. [2022-11-16 12:38:00,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 213 transitions, 1356 flow [2022-11-16 12:38:00,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:38:00,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:38:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2245 transitions. [2022-11-16 12:38:00,396 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.751338688085676 [2022-11-16 12:38:00,396 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2245 transitions. [2022-11-16 12:38:00,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2245 transitions. [2022-11-16 12:38:00,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:00,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2245 transitions. [2022-11-16 12:38:00,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 124.72222222222223) internal successors, (2245), 18 states have internal predecessors, (2245), 0 states have call successors, (0), 0 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 12:38:00,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 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 12:38:00,404 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 166.0) internal successors, (3154), 19 states have internal predecessors, (3154), 0 states have call successors, (0), 0 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 12:38:00,404 INFO L175 Difference]: Start difference. First operand has 227 places, 173 transitions, 851 flow. Second operand 18 states and 2245 transitions. [2022-11-16 12:38:00,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 213 transitions, 1356 flow [2022-11-16 12:38:00,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 213 transitions, 1239 flow, removed 50 selfloop flow, removed 8 redundant places. [2022-11-16 12:38:00,418 INFO L231 Difference]: Finished difference. Result has 241 places, 172 transitions, 832 flow [2022-11-16 12:38:00,418 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=832, PETRI_PLACES=241, PETRI_TRANSITIONS=172} [2022-11-16 12:38:00,419 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 90 predicate places. [2022-11-16 12:38:00,419 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 172 transitions, 832 flow [2022-11-16 12:38:00,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:38:00,420 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:00,420 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] [2022-11-16 12:38:00,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-16 12:38:00,420 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1651138964, now seen corresponding path program 14 times [2022-11-16 12:38:00,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:00,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447494458] [2022-11-16 12:38:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:00,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:00,626 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 12:38:00,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:00,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447494458] [2022-11-16 12:38:00,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447494458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:00,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:00,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:38:00,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020723551] [2022-11-16 12:38:00,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:00,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:38:00,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:38:00,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:38:00,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:38:00,630 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 172 transitions, 832 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:38:00,630 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:00,630 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:38:00,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:01,029 INFO L130 PetriNetUnfolder]: 66/656 cut-off events. [2022-11-16 12:38:01,029 INFO L131 PetriNetUnfolder]: For 1517/1536 co-relation queries the response was YES. [2022-11-16 12:38:01,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1729 conditions, 656 events. 66/656 cut-off events. For 1517/1536 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3177 event pairs, 34 based on Foata normal form. 2/629 useless extension candidates. Maximal degree in co-relation 1671. Up to 176 conditions per place. [2022-11-16 12:38:01,034 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 44 selfloop transitions, 11 changer transitions 20/190 dead transitions. [2022-11-16 12:38:01,034 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 190 transitions, 1169 flow [2022-11-16 12:38:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:38:01,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:38:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2105 transitions. [2022-11-16 12:38:01,037 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7459248759744862 [2022-11-16 12:38:01,037 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2105 transitions. [2022-11-16 12:38:01,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2105 transitions. [2022-11-16 12:38:01,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:01,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2105 transitions. [2022-11-16 12:38:01,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 123.82352941176471) internal successors, (2105), 17 states have internal predecessors, (2105), 0 states have call successors, (0), 0 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 12:38:01,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:38:01,044 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 166.0) internal successors, (2988), 18 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 12:38:01,044 INFO L175 Difference]: Start difference. First operand has 241 places, 172 transitions, 832 flow. Second operand 17 states and 2105 transitions. [2022-11-16 12:38:01,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 190 transitions, 1169 flow [2022-11-16 12:38:01,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 190 transitions, 1058 flow, removed 32 selfloop flow, removed 20 redundant places. [2022-11-16 12:38:01,056 INFO L231 Difference]: Finished difference. Result has 231 places, 169 transitions, 777 flow [2022-11-16 12:38:01,056 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=777, PETRI_PLACES=231, PETRI_TRANSITIONS=169} [2022-11-16 12:38:01,058 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 80 predicate places. [2022-11-16 12:38:01,058 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 169 transitions, 777 flow [2022-11-16 12:38:01,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:38:01,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:01,059 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] [2022-11-16 12:38:01,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-16 12:38:01,059 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:01,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash 50925656, now seen corresponding path program 15 times [2022-11-16 12:38:01,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:01,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230235448] [2022-11-16 12:38:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:01,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:01,275 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 12:38:01,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:01,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230235448] [2022-11-16 12:38:01,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230235448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:01,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:01,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:38:01,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707106519] [2022-11-16 12:38:01,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:01,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:38:01,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:01,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:38:01,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:38:01,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 166 [2022-11-16 12:38:01,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 169 transitions, 777 flow. Second operand has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:38:01,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:01,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 166 [2022-11-16 12:38:01,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:01,647 INFO L130 PetriNetUnfolder]: 61/578 cut-off events. [2022-11-16 12:38:01,648 INFO L131 PetriNetUnfolder]: For 1109/1128 co-relation queries the response was YES. [2022-11-16 12:38:01,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 578 events. 61/578 cut-off events. For 1109/1128 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2524 event pairs, 34 based on Foata normal form. 2/551 useless extension candidates. Maximal degree in co-relation 1409. Up to 158 conditions per place. [2022-11-16 12:38:01,651 INFO L137 encePairwiseOnDemand]: 154/166 looper letters, 37 selfloop transitions, 0 changer transitions 26/176 dead transitions. [2022-11-16 12:38:01,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 176 transitions, 921 flow [2022-11-16 12:38:01,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:38:01,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 12:38:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1855 transitions. [2022-11-16 12:38:01,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7449799196787149 [2022-11-16 12:38:01,655 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1855 transitions. [2022-11-16 12:38:01,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1855 transitions. [2022-11-16 12:38:01,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:01,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1855 transitions. [2022-11-16 12:38:01,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 123.66666666666667) internal successors, (1855), 15 states have internal predecessors, (1855), 0 states have call successors, (0), 0 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 12:38:01,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:38:01,663 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 166.0) internal successors, (2656), 16 states have internal predecessors, (2656), 0 states have call successors, (0), 0 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 12:38:01,663 INFO L175 Difference]: Start difference. First operand has 231 places, 169 transitions, 777 flow. Second operand 15 states and 1855 transitions. [2022-11-16 12:38:01,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 176 transitions, 921 flow [2022-11-16 12:38:01,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 176 transitions, 870 flow, removed 15 selfloop flow, removed 9 redundant places. [2022-11-16 12:38:01,675 INFO L231 Difference]: Finished difference. Result has 229 places, 150 transitions, 538 flow [2022-11-16 12:38:01,675 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=538, PETRI_PLACES=229, PETRI_TRANSITIONS=150} [2022-11-16 12:38:01,676 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 78 predicate places. [2022-11-16 12:38:01,676 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 150 transitions, 538 flow [2022-11-16 12:38:01,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.9) internal successors, (1229), 10 states have internal predecessors, (1229), 0 states have call successors, (0), 0 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 12:38:01,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:01,677 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] [2022-11-16 12:38:01,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-16 12:38:01,677 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:01,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:01,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1267911969, now seen corresponding path program 1 times [2022-11-16 12:38:01,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:01,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110939674] [2022-11-16 12:38:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:01,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:01,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:02,706 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 12:38:02,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:02,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110939674] [2022-11-16 12:38:02,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110939674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:02,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:02,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:02,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404052565] [2022-11-16 12:38:02,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:02,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:02,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:02,711 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:02,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 150 transitions, 538 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:02,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:02,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:02,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:06,410 INFO L130 PetriNetUnfolder]: 451/1677 cut-off events. [2022-11-16 12:38:06,410 INFO L131 PetriNetUnfolder]: For 2309/2319 co-relation queries the response was YES. [2022-11-16 12:38:06,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 1677 events. 451/1677 cut-off events. For 2309/2319 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 10337 event pairs, 10 based on Foata normal form. 4/1610 useless extension candidates. Maximal degree in co-relation 3966. Up to 177 conditions per place. [2022-11-16 12:38:06,418 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 192 selfloop transitions, 35 changer transitions 39/358 dead transitions. [2022-11-16 12:38:06,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 358 transitions, 2158 flow [2022-11-16 12:38:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 12:38:06,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 12:38:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3838 transitions. [2022-11-16 12:38:06,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6248778899381309 [2022-11-16 12:38:06,424 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3838 transitions. [2022-11-16 12:38:06,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3838 transitions. [2022-11-16 12:38:06,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:06,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3838 transitions. [2022-11-16 12:38:06,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 103.72972972972973) internal successors, (3838), 37 states have internal predecessors, (3838), 0 states have call successors, (0), 0 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 12:38:06,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 166.0) internal successors, (6308), 38 states have internal predecessors, (6308), 0 states have call successors, (0), 0 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 12:38:06,436 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 166.0) internal successors, (6308), 38 states have internal predecessors, (6308), 0 states have call successors, (0), 0 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 12:38:06,437 INFO L175 Difference]: Start difference. First operand has 229 places, 150 transitions, 538 flow. Second operand 37 states and 3838 transitions. [2022-11-16 12:38:06,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 358 transitions, 2158 flow [2022-11-16 12:38:06,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 358 transitions, 1880 flow, removed 134 selfloop flow, removed 14 redundant places. [2022-11-16 12:38:06,448 INFO L231 Difference]: Finished difference. Result has 245 places, 177 transitions, 791 flow [2022-11-16 12:38:06,448 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=791, PETRI_PLACES=245, PETRI_TRANSITIONS=177} [2022-11-16 12:38:06,449 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 94 predicate places. [2022-11-16 12:38:06,449 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 177 transitions, 791 flow [2022-11-16 12:38:06,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:06,450 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:06,450 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] [2022-11-16 12:38:06,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-16 12:38:06,450 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:06,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:06,451 INFO L85 PathProgramCache]: Analyzing trace with hash -291806139, now seen corresponding path program 2 times [2022-11-16 12:38:06,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:06,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561883023] [2022-11-16 12:38:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:06,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:07,447 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 12:38:07,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561883023] [2022-11-16 12:38:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561883023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:07,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:07,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:07,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565280323] [2022-11-16 12:38:07,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:07,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:07,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:07,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:07,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:07,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:07,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 177 transitions, 791 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:07,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:07,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:07,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:11,199 INFO L130 PetriNetUnfolder]: 482/1759 cut-off events. [2022-11-16 12:38:11,200 INFO L131 PetriNetUnfolder]: For 5764/5777 co-relation queries the response was YES. [2022-11-16 12:38:11,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5275 conditions, 1759 events. 482/1759 cut-off events. For 5764/5777 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 10996 event pairs, 27 based on Foata normal form. 3/1686 useless extension candidates. Maximal degree in co-relation 5211. Up to 169 conditions per place. [2022-11-16 12:38:11,214 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 193 selfloop transitions, 59 changer transitions 43/387 dead transitions. [2022-11-16 12:38:11,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 387 transitions, 2841 flow [2022-11-16 12:38:11,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:38:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:38:11,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3641 transitions. [2022-11-16 12:38:11,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6266781411359724 [2022-11-16 12:38:11,219 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3641 transitions. [2022-11-16 12:38:11,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3641 transitions. [2022-11-16 12:38:11,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:11,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3641 transitions. [2022-11-16 12:38:11,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.02857142857142) internal successors, (3641), 35 states have internal predecessors, (3641), 0 states have call successors, (0), 0 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 12:38:11,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:11,232 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:11,232 INFO L175 Difference]: Start difference. First operand has 245 places, 177 transitions, 791 flow. Second operand 35 states and 3641 transitions. [2022-11-16 12:38:11,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 387 transitions, 2841 flow [2022-11-16 12:38:11,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 387 transitions, 2432 flow, removed 158 selfloop flow, removed 21 redundant places. [2022-11-16 12:38:11,260 INFO L231 Difference]: Finished difference. Result has 265 places, 210 transitions, 1288 flow [2022-11-16 12:38:11,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=684, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1288, PETRI_PLACES=265, PETRI_TRANSITIONS=210} [2022-11-16 12:38:11,262 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 114 predicate places. [2022-11-16 12:38:11,262 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 210 transitions, 1288 flow [2022-11-16 12:38:11,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:11,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:11,263 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] [2022-11-16 12:38:11,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-16 12:38:11,263 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:11,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:11,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1037878581, now seen corresponding path program 3 times [2022-11-16 12:38:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:11,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198001732] [2022-11-16 12:38:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:11,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:12,237 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 12:38:12,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:12,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198001732] [2022-11-16 12:38:12,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198001732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:12,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:12,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:12,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336692999] [2022-11-16 12:38:12,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:12,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:12,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:12,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:12,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:12,242 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:12,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 210 transitions, 1288 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:12,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:12,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:12,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:18,980 INFO L130 PetriNetUnfolder]: 516/1860 cut-off events. [2022-11-16 12:38:18,981 INFO L131 PetriNetUnfolder]: For 5256/5269 co-relation queries the response was YES. [2022-11-16 12:38:18,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5888 conditions, 1860 events. 516/1860 cut-off events. For 5256/5269 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 12068 event pairs, 6 based on Foata normal form. 7/1788 useless extension candidates. Maximal degree in co-relation 5816. Up to 147 conditions per place. [2022-11-16 12:38:18,990 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 287 selfloop transitions, 35 changer transitions 124/538 dead transitions. [2022-11-16 12:38:18,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 538 transitions, 4402 flow [2022-11-16 12:38:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-16 12:38:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-11-16 12:38:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 6663 transitions. [2022-11-16 12:38:18,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.617516218721038 [2022-11-16 12:38:18,997 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 6663 transitions. [2022-11-16 12:38:18,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 6663 transitions. [2022-11-16 12:38:18,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:18,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 6663 transitions. [2022-11-16 12:38:19,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 102.50769230769231) internal successors, (6663), 65 states have internal predecessors, (6663), 0 states have call successors, (0), 0 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 12:38:19,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 166.0) internal successors, (10956), 66 states have internal predecessors, (10956), 0 states have call successors, (0), 0 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 12:38:19,017 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 166.0) internal successors, (10956), 66 states have internal predecessors, (10956), 0 states have call successors, (0), 0 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 12:38:19,017 INFO L175 Difference]: Start difference. First operand has 265 places, 210 transitions, 1288 flow. Second operand 65 states and 6663 transitions. [2022-11-16 12:38:19,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 538 transitions, 4402 flow [2022-11-16 12:38:19,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 538 transitions, 3693 flow, removed 167 selfloop flow, removed 20 redundant places. [2022-11-16 12:38:19,056 INFO L231 Difference]: Finished difference. Result has 347 places, 210 transitions, 1173 flow [2022-11-16 12:38:19,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=1173, PETRI_PLACES=347, PETRI_TRANSITIONS=210} [2022-11-16 12:38:19,057 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 196 predicate places. [2022-11-16 12:38:19,057 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 210 transitions, 1173 flow [2022-11-16 12:38:19,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:19,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:19,058 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] [2022-11-16 12:38:19,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-16 12:38:19,059 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:19,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1350818271, now seen corresponding path program 4 times [2022-11-16 12:38:19,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:19,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374453442] [2022-11-16 12:38:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:19,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:20,020 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 12:38:20,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:20,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374453442] [2022-11-16 12:38:20,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374453442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:20,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:20,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:20,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438492365] [2022-11-16 12:38:20,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:20,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:20,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:20,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:20,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:20,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 210 transitions, 1173 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:20,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:20,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:20,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:23,848 INFO L130 PetriNetUnfolder]: 553/1983 cut-off events. [2022-11-16 12:38:23,848 INFO L131 PetriNetUnfolder]: For 10012/10030 co-relation queries the response was YES. [2022-11-16 12:38:23,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 1983 events. 553/1983 cut-off events. For 10012/10030 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12840 event pairs, 44 based on Foata normal form. 5/1903 useless extension candidates. Maximal degree in co-relation 7170. Up to 198 conditions per place. [2022-11-16 12:38:23,861 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 250 selfloop transitions, 41 changer transitions 39/422 dead transitions. [2022-11-16 12:38:23,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 422 transitions, 3662 flow [2022-11-16 12:38:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:38:23,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:38:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3657 transitions. [2022-11-16 12:38:23,865 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6294320137693632 [2022-11-16 12:38:23,865 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3657 transitions. [2022-11-16 12:38:23,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3657 transitions. [2022-11-16 12:38:23,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:23,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3657 transitions. [2022-11-16 12:38:23,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.48571428571428) internal successors, (3657), 35 states have internal predecessors, (3657), 0 states have call successors, (0), 0 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 12:38:23,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:23,877 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:23,877 INFO L175 Difference]: Start difference. First operand has 347 places, 210 transitions, 1173 flow. Second operand 35 states and 3657 transitions. [2022-11-16 12:38:23,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 422 transitions, 3662 flow [2022-11-16 12:38:23,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 422 transitions, 3154 flow, removed 115 selfloop flow, removed 60 redundant places. [2022-11-16 12:38:23,929 INFO L231 Difference]: Finished difference. Result has 294 places, 234 transitions, 1535 flow [2022-11-16 12:38:23,929 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1535, PETRI_PLACES=294, PETRI_TRANSITIONS=234} [2022-11-16 12:38:23,931 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 143 predicate places. [2022-11-16 12:38:23,932 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 234 transitions, 1535 flow [2022-11-16 12:38:23,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:23,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:23,933 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] [2022-11-16 12:38:23,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-16 12:38:23,933 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:23,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:23,934 INFO L85 PathProgramCache]: Analyzing trace with hash 490508601, now seen corresponding path program 5 times [2022-11-16 12:38:23,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:23,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542190456] [2022-11-16 12:38:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:23,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:23,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:24,841 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 12:38:24,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:24,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542190456] [2022-11-16 12:38:24,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542190456] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:24,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:24,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:24,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851581873] [2022-11-16 12:38:24,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:24,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:24,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:24,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:24,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:24,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:24,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 234 transitions, 1535 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:24,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:24,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:24,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:28,698 INFO L130 PetriNetUnfolder]: 677/2397 cut-off events. [2022-11-16 12:38:28,699 INFO L131 PetriNetUnfolder]: For 11922/11942 co-relation queries the response was YES. [2022-11-16 12:38:28,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8729 conditions, 2397 events. 677/2397 cut-off events. For 11922/11942 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 16447 event pairs, 85 based on Foata normal form. 8/2299 useless extension candidates. Maximal degree in co-relation 8641. Up to 403 conditions per place. [2022-11-16 12:38:28,771 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 282 selfloop transitions, 46 changer transitions 36/456 dead transitions. [2022-11-16 12:38:28,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 456 transitions, 4232 flow [2022-11-16 12:38:28,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:38:28,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:38:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3654 transitions. [2022-11-16 12:38:28,775 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6289156626506024 [2022-11-16 12:38:28,775 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3654 transitions. [2022-11-16 12:38:28,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3654 transitions. [2022-11-16 12:38:28,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:28,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3654 transitions. [2022-11-16 12:38:28,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.4) internal successors, (3654), 35 states have internal predecessors, (3654), 0 states have call successors, (0), 0 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 12:38:28,784 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:28,785 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:28,785 INFO L175 Difference]: Start difference. First operand has 294 places, 234 transitions, 1535 flow. Second operand 35 states and 3654 transitions. [2022-11-16 12:38:28,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 456 transitions, 4232 flow [2022-11-16 12:38:28,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 456 transitions, 3703 flow, removed 183 selfloop flow, removed 19 redundant places. [2022-11-16 12:38:28,825 INFO L231 Difference]: Finished difference. Result has 321 places, 261 transitions, 1780 flow [2022-11-16 12:38:28,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1252, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1780, PETRI_PLACES=321, PETRI_TRANSITIONS=261} [2022-11-16 12:38:28,826 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 170 predicate places. [2022-11-16 12:38:28,826 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 261 transitions, 1780 flow [2022-11-16 12:38:28,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:28,826 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:28,826 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] [2022-11-16 12:38:28,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-16 12:38:28,827 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:28,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:28,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1358414417, now seen corresponding path program 6 times [2022-11-16 12:38:28,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:28,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665095674] [2022-11-16 12:38:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:28,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:29,702 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 12:38:29,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:29,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665095674] [2022-11-16 12:38:29,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665095674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:29,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:29,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378924950] [2022-11-16 12:38:29,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:29,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:29,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:29,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:29,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:29,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:29,708 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 261 transitions, 1780 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:29,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:29,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:29,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:34,102 INFO L130 PetriNetUnfolder]: 938/3190 cut-off events. [2022-11-16 12:38:34,103 INFO L131 PetriNetUnfolder]: For 19250/19275 co-relation queries the response was YES. [2022-11-16 12:38:34,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12391 conditions, 3190 events. 938/3190 cut-off events. For 19250/19275 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24217 event pairs, 162 based on Foata normal form. 7/3050 useless extension candidates. Maximal degree in co-relation 12289. Up to 995 conditions per place. [2022-11-16 12:38:34,124 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 338 selfloop transitions, 58 changer transitions 39/527 dead transitions. [2022-11-16 12:38:34,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 527 transitions, 5400 flow [2022-11-16 12:38:34,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:38:34,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:38:34,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3674 transitions. [2022-11-16 12:38:34,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6323580034423408 [2022-11-16 12:38:34,128 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3674 transitions. [2022-11-16 12:38:34,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3674 transitions. [2022-11-16 12:38:34,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:34,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3674 transitions. [2022-11-16 12:38:34,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.97142857142858) internal successors, (3674), 35 states have internal predecessors, (3674), 0 states have call successors, (0), 0 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 12:38:34,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:34,134 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:34,134 INFO L175 Difference]: Start difference. First operand has 321 places, 261 transitions, 1780 flow. Second operand 35 states and 3674 transitions. [2022-11-16 12:38:34,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 527 transitions, 5400 flow [2022-11-16 12:38:34,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 527 transitions, 4910 flow, removed 192 selfloop flow, removed 19 redundant places. [2022-11-16 12:38:34,207 INFO L231 Difference]: Finished difference. Result has 353 places, 292 transitions, 2347 flow [2022-11-16 12:38:34,207 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2347, PETRI_PLACES=353, PETRI_TRANSITIONS=292} [2022-11-16 12:38:34,208 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 202 predicate places. [2022-11-16 12:38:34,208 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 292 transitions, 2347 flow [2022-11-16 12:38:34,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:34,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:34,208 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] [2022-11-16 12:38:34,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-16 12:38:34,209 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:34,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:34,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1827760597, now seen corresponding path program 7 times [2022-11-16 12:38:34,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:34,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941288171] [2022-11-16 12:38:34,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:34,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:35,149 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 12:38:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:35,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941288171] [2022-11-16 12:38:35,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941288171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:35,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:35,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:35,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755168046] [2022-11-16 12:38:35,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:35,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:35,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:35,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:35,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:35,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 292 transitions, 2347 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:35,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:35,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:35,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:42,948 INFO L130 PetriNetUnfolder]: 1117/3934 cut-off events. [2022-11-16 12:38:42,948 INFO L131 PetriNetUnfolder]: For 30824/30853 co-relation queries the response was YES. [2022-11-16 12:38:42,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16404 conditions, 3934 events. 1117/3934 cut-off events. For 30824/30853 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 32063 event pairs, 208 based on Foata normal form. 9/3773 useless extension candidates. Maximal degree in co-relation 16284. Up to 948 conditions per place. [2022-11-16 12:38:42,987 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 426 selfloop transitions, 26 changer transitions 112/656 dead transitions. [2022-11-16 12:38:42,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 656 transitions, 7257 flow [2022-11-16 12:38:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 12:38:42,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-16 12:38:42,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 6400 transitions. [2022-11-16 12:38:42,993 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6218422075398368 [2022-11-16 12:38:42,994 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 6400 transitions. [2022-11-16 12:38:42,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 6400 transitions. [2022-11-16 12:38:42,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:42,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 6400 transitions. [2022-11-16 12:38:43,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 103.2258064516129) internal successors, (6400), 62 states have internal predecessors, (6400), 0 states have call successors, (0), 0 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 12:38:43,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 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 12:38:43,014 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 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 12:38:43,015 INFO L175 Difference]: Start difference. First operand has 353 places, 292 transitions, 2347 flow. Second operand 62 states and 6400 transitions. [2022-11-16 12:38:43,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 656 transitions, 7257 flow [2022-11-16 12:38:43,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 656 transitions, 6521 flow, removed 367 selfloop flow, removed 15 redundant places. [2022-11-16 12:38:43,222 INFO L231 Difference]: Finished difference. Result has 441 places, 301 transitions, 2363 flow [2022-11-16 12:38:43,223 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=2363, PETRI_PLACES=441, PETRI_TRANSITIONS=301} [2022-11-16 12:38:43,223 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 290 predicate places. [2022-11-16 12:38:43,223 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 301 transitions, 2363 flow [2022-11-16 12:38:43,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:43,224 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:43,225 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] [2022-11-16 12:38:43,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-16 12:38:43,225 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:43,226 INFO L85 PathProgramCache]: Analyzing trace with hash 838993579, now seen corresponding path program 8 times [2022-11-16 12:38:43,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:43,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836675686] [2022-11-16 12:38:43,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:43,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:44,158 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 12:38:44,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:44,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836675686] [2022-11-16 12:38:44,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836675686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:44,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:44,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:44,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776035742] [2022-11-16 12:38:44,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:44,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:44,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:44,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:44,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:44,161 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:44,162 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 301 transitions, 2363 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:44,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:44,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:44,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:49,130 INFO L130 PetriNetUnfolder]: 1214/4280 cut-off events. [2022-11-16 12:38:49,130 INFO L131 PetriNetUnfolder]: For 64254/64285 co-relation queries the response was YES. [2022-11-16 12:38:49,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20728 conditions, 4280 events. 1214/4280 cut-off events. For 64254/64285 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 35748 event pairs, 190 based on Foata normal form. 6/4099 useless extension candidates. Maximal degree in co-relation 20565. Up to 872 conditions per place. [2022-11-16 12:38:49,172 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 381 selfloop transitions, 53 changer transitions 43/569 dead transitions. [2022-11-16 12:38:49,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 569 transitions, 7466 flow [2022-11-16 12:38:49,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:38:49,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:38:49,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3661 transitions. [2022-11-16 12:38:49,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6301204819277109 [2022-11-16 12:38:49,175 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3661 transitions. [2022-11-16 12:38:49,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3661 transitions. [2022-11-16 12:38:49,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:49,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3661 transitions. [2022-11-16 12:38:49,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.6) internal successors, (3661), 35 states have internal predecessors, (3661), 0 states have call successors, (0), 0 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 12:38:49,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:49,182 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:49,182 INFO L175 Difference]: Start difference. First operand has 441 places, 301 transitions, 2363 flow. Second operand 35 states and 3661 transitions. [2022-11-16 12:38:49,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 569 transitions, 7466 flow [2022-11-16 12:38:49,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 569 transitions, 6901 flow, removed 243 selfloop flow, removed 29 redundant places. [2022-11-16 12:38:49,414 INFO L231 Difference]: Finished difference. Result has 425 places, 327 transitions, 2949 flow [2022-11-16 12:38:49,414 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2949, PETRI_PLACES=425, PETRI_TRANSITIONS=327} [2022-11-16 12:38:49,414 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 274 predicate places. [2022-11-16 12:38:49,415 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 327 transitions, 2949 flow [2022-11-16 12:38:49,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:49,415 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:49,415 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] [2022-11-16 12:38:49,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-16 12:38:49,415 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:49,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2064064143, now seen corresponding path program 9 times [2022-11-16 12:38:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:49,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626760884] [2022-11-16 12:38:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:50,338 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 12:38:50,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:50,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626760884] [2022-11-16 12:38:50,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626760884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:50,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:50,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:50,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515671779] [2022-11-16 12:38:50,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:50,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:50,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:50,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:50,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:50,342 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:50,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 327 transitions, 2949 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:50,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:50,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:50,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:38:55,978 INFO L130 PetriNetUnfolder]: 1412/4793 cut-off events. [2022-11-16 12:38:55,978 INFO L131 PetriNetUnfolder]: For 79098/79126 co-relation queries the response was YES. [2022-11-16 12:38:56,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25128 conditions, 4793 events. 1412/4793 cut-off events. For 79098/79126 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 41028 event pairs, 365 based on Foata normal form. 7/4607 useless extension candidates. Maximal degree in co-relation 24963. Up to 1457 conditions per place. [2022-11-16 12:38:56,029 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 425 selfloop transitions, 45 changer transitions 36/598 dead transitions. [2022-11-16 12:38:56,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 598 transitions, 7839 flow [2022-11-16 12:38:56,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:38:56,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:38:56,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3686 transitions. [2022-11-16 12:38:56,034 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6344234079173838 [2022-11-16 12:38:56,034 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3686 transitions. [2022-11-16 12:38:56,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3686 transitions. [2022-11-16 12:38:56,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:38:56,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3686 transitions. [2022-11-16 12:38:56,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.31428571428572) internal successors, (3686), 35 states have internal predecessors, (3686), 0 states have call successors, (0), 0 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 12:38:56,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:56,042 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:38:56,042 INFO L175 Difference]: Start difference. First operand has 425 places, 327 transitions, 2949 flow. Second operand 35 states and 3686 transitions. [2022-11-16 12:38:56,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 598 transitions, 7839 flow [2022-11-16 12:38:56,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 598 transitions, 7186 flow, removed 256 selfloop flow, removed 19 redundant places. [2022-11-16 12:38:56,382 INFO L231 Difference]: Finished difference. Result has 455 places, 355 transitions, 3518 flow [2022-11-16 12:38:56,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2532, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3518, PETRI_PLACES=455, PETRI_TRANSITIONS=355} [2022-11-16 12:38:56,383 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 304 predicate places. [2022-11-16 12:38:56,383 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 355 transitions, 3518 flow [2022-11-16 12:38:56,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:56,384 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:38:56,384 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] [2022-11-16 12:38:56,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-16 12:38:56,384 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:38:56,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:38:56,384 INFO L85 PathProgramCache]: Analyzing trace with hash -226695475, now seen corresponding path program 10 times [2022-11-16 12:38:56,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:38:56,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967676411] [2022-11-16 12:38:56,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:38:56,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:38:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:38:57,336 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 12:38:57,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:38:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967676411] [2022-11-16 12:38:57,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967676411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:38:57,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:38:57,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:38:57,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395051725] [2022-11-16 12:38:57,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:38:57,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:38:57,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:38:57,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:38:57,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:38:57,340 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:38:57,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 355 transitions, 3518 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:38:57,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:38:57,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:38:57,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:03,250 INFO L130 PetriNetUnfolder]: 1484/5028 cut-off events. [2022-11-16 12:39:03,250 INFO L131 PetriNetUnfolder]: For 98866/98901 co-relation queries the response was YES. [2022-11-16 12:39:03,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27834 conditions, 5028 events. 1484/5028 cut-off events. For 98866/98901 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 43772 event pairs, 322 based on Foata normal form. 11/4814 useless extension candidates. Maximal degree in co-relation 27653. Up to 1270 conditions per place. [2022-11-16 12:39:03,302 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 495 selfloop transitions, 60 changer transitions 43/690 dead transitions. [2022-11-16 12:39:03,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 690 transitions, 10436 flow [2022-11-16 12:39:03,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:39:03,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:39:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3687 transitions. [2022-11-16 12:39:03,306 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6345955249569707 [2022-11-16 12:39:03,306 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3687 transitions. [2022-11-16 12:39:03,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3687 transitions. [2022-11-16 12:39:03,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:03,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3687 transitions. [2022-11-16 12:39:03,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.34285714285714) internal successors, (3687), 35 states have internal predecessors, (3687), 0 states have call successors, (0), 0 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 12:39:03,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:03,312 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:03,312 INFO L175 Difference]: Start difference. First operand has 455 places, 355 transitions, 3518 flow. Second operand 35 states and 3687 transitions. [2022-11-16 12:39:03,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 690 transitions, 10436 flow [2022-11-16 12:39:03,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 690 transitions, 9471 flow, removed 460 selfloop flow, removed 18 redundant places. [2022-11-16 12:39:03,790 INFO L231 Difference]: Finished difference. Result has 480 places, 377 transitions, 3784 flow [2022-11-16 12:39:03,791 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3784, PETRI_PLACES=480, PETRI_TRANSITIONS=377} [2022-11-16 12:39:03,791 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 329 predicate places. [2022-11-16 12:39:03,791 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 377 transitions, 3784 flow [2022-11-16 12:39:03,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:03,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:03,792 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] [2022-11-16 12:39:03,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-16 12:39:03,793 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:39:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:03,793 INFO L85 PathProgramCache]: Analyzing trace with hash -266546299, now seen corresponding path program 11 times [2022-11-16 12:39:03,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:03,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803215793] [2022-11-16 12:39:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:03,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:03,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:04,696 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 12:39:04,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:04,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803215793] [2022-11-16 12:39:04,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803215793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:04,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:04,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:39:04,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069983239] [2022-11-16 12:39:04,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:04,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:39:04,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:04,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:39:04,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:39:04,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:39:04,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 377 transitions, 3784 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:04,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:04,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:39:04,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:13,142 INFO L130 PetriNetUnfolder]: 1622/5772 cut-off events. [2022-11-16 12:39:13,142 INFO L131 PetriNetUnfolder]: For 118628/118663 co-relation queries the response was YES. [2022-11-16 12:39:13,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31333 conditions, 5772 events. 1622/5772 cut-off events. For 118628/118663 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 52185 event pairs, 269 based on Foata normal form. 8/5520 useless extension candidates. Maximal degree in co-relation 31143. Up to 1570 conditions per place. [2022-11-16 12:39:13,216 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 537 selfloop transitions, 66 changer transitions 76/771 dead transitions. [2022-11-16 12:39:13,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 517 places, 771 transitions, 10868 flow [2022-11-16 12:39:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 12:39:13,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-16 12:39:13,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 5449 transitions. [2022-11-16 12:39:13,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6193453057513071 [2022-11-16 12:39:13,224 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 5449 transitions. [2022-11-16 12:39:13,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 5449 transitions. [2022-11-16 12:39:13,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:13,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 5449 transitions. [2022-11-16 12:39:13,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 102.81132075471699) internal successors, (5449), 53 states have internal predecessors, (5449), 0 states have call successors, (0), 0 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 12:39:13,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 166.0) internal successors, (8964), 54 states have internal predecessors, (8964), 0 states have call successors, (0), 0 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 12:39:13,241 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 166.0) internal successors, (8964), 54 states have internal predecessors, (8964), 0 states have call successors, (0), 0 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 12:39:13,241 INFO L175 Difference]: Start difference. First operand has 480 places, 377 transitions, 3784 flow. Second operand 53 states and 5449 transitions. [2022-11-16 12:39:13,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 517 places, 771 transitions, 10868 flow [2022-11-16 12:39:13,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 771 transitions, 10227 flow, removed 282 selfloop flow, removed 20 redundant places. [2022-11-16 12:39:13,910 INFO L231 Difference]: Finished difference. Result has 545 places, 389 transitions, 3925 flow [2022-11-16 12:39:13,910 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3273, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3925, PETRI_PLACES=545, PETRI_TRANSITIONS=389} [2022-11-16 12:39:13,911 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 394 predicate places. [2022-11-16 12:39:13,911 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 389 transitions, 3925 flow [2022-11-16 12:39:13,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:13,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:13,912 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] [2022-11-16 12:39:13,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-16 12:39:13,912 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:39:13,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:13,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1419615169, now seen corresponding path program 12 times [2022-11-16 12:39:13,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:13,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996466245] [2022-11-16 12:39:13,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:13,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:14,837 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 12:39:14,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:14,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996466245] [2022-11-16 12:39:14,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996466245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:14,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:14,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:39:14,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823935768] [2022-11-16 12:39:14,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:39:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:39:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:39:14,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:39:14,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 389 transitions, 3925 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:14,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:14,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:39:14,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:21,438 INFO L130 PetriNetUnfolder]: 1671/5671 cut-off events. [2022-11-16 12:39:21,438 INFO L131 PetriNetUnfolder]: For 151834/151873 co-relation queries the response was YES. [2022-11-16 12:39:21,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34773 conditions, 5671 events. 1671/5671 cut-off events. For 151834/151873 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 50517 event pairs, 392 based on Foata normal form. 11/5451 useless extension candidates. Maximal degree in co-relation 34548. Up to 1830 conditions per place. [2022-11-16 12:39:21,517 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 489 selfloop transitions, 51 changer transitions 36/668 dead transitions. [2022-11-16 12:39:21,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 668 transitions, 9625 flow [2022-11-16 12:39:21,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:39:21,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:39:21,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3698 transitions. [2022-11-16 12:39:21,522 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6364888123924268 [2022-11-16 12:39:21,522 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3698 transitions. [2022-11-16 12:39:21,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3698 transitions. [2022-11-16 12:39:21,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:21,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3698 transitions. [2022-11-16 12:39:21,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.65714285714286) internal successors, (3698), 35 states have internal predecessors, (3698), 0 states have call successors, (0), 0 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 12:39:21,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:21,531 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:21,531 INFO L175 Difference]: Start difference. First operand has 545 places, 389 transitions, 3925 flow. Second operand 35 states and 3698 transitions. [2022-11-16 12:39:21,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 668 transitions, 9625 flow [2022-11-16 12:39:22,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 668 transitions, 9072 flow, removed 231 selfloop flow, removed 26 redundant places. [2022-11-16 12:39:22,493 INFO L231 Difference]: Finished difference. Result has 541 places, 411 transitions, 4510 flow [2022-11-16 12:39:22,493 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=3668, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4510, PETRI_PLACES=541, PETRI_TRANSITIONS=411} [2022-11-16 12:39:22,494 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 390 predicate places. [2022-11-16 12:39:22,494 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 411 transitions, 4510 flow [2022-11-16 12:39:22,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:22,494 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:22,495 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] [2022-11-16 12:39:22,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-16 12:39:22,495 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:39:22,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:22,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1216646191, now seen corresponding path program 13 times [2022-11-16 12:39:22,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:22,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688615563] [2022-11-16 12:39:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:22,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:23,373 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 12:39:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688615563] [2022-11-16 12:39:23,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688615563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:23,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:23,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:39:23,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117973063] [2022-11-16 12:39:23,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:23,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:39:23,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:39:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:39:23,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:39:23,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 411 transitions, 4510 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:23,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:23,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:39:23,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:29,853 INFO L130 PetriNetUnfolder]: 1868/6398 cut-off events. [2022-11-16 12:39:29,853 INFO L131 PetriNetUnfolder]: For 149903/149940 co-relation queries the response was YES. [2022-11-16 12:39:29,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37101 conditions, 6398 events. 1868/6398 cut-off events. For 149903/149940 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 59110 event pairs, 469 based on Foata normal form. 8/6124 useless extension candidates. Maximal degree in co-relation 36874. Up to 2142 conditions per place. [2022-11-16 12:39:29,949 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 519 selfloop transitions, 50 changer transitions 43/704 dead transitions. [2022-11-16 12:39:29,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 704 transitions, 10905 flow [2022-11-16 12:39:29,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:39:29,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:39:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3693 transitions. [2022-11-16 12:39:29,953 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6356282271944923 [2022-11-16 12:39:29,953 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3693 transitions. [2022-11-16 12:39:29,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3693 transitions. [2022-11-16 12:39:29,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:29,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3693 transitions. [2022-11-16 12:39:29,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.51428571428572) internal successors, (3693), 35 states have internal predecessors, (3693), 0 states have call successors, (0), 0 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 12:39:29,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:29,962 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:29,962 INFO L175 Difference]: Start difference. First operand has 541 places, 411 transitions, 4510 flow. Second operand 35 states and 3693 transitions. [2022-11-16 12:39:29,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 704 transitions, 10905 flow [2022-11-16 12:39:30,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 704 transitions, 10289 flow, removed 251 selfloop flow, removed 20 redundant places. [2022-11-16 12:39:30,828 INFO L231 Difference]: Finished difference. Result has 570 places, 440 transitions, 4970 flow [2022-11-16 12:39:30,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4021, PETRI_DIFFERENCE_MINUEND_PLACES=506, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4970, PETRI_PLACES=570, PETRI_TRANSITIONS=440} [2022-11-16 12:39:30,828 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 419 predicate places. [2022-11-16 12:39:30,829 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 440 transitions, 4970 flow [2022-11-16 12:39:30,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:30,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:30,829 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] [2022-11-16 12:39:30,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-16 12:39:30,830 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:39:30,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:30,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1940837419, now seen corresponding path program 14 times [2022-11-16 12:39:30,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:30,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201459098] [2022-11-16 12:39:30,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:30,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:31,843 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 12:39:31,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:31,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201459098] [2022-11-16 12:39:31,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201459098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:31,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:31,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:39:31,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743204443] [2022-11-16 12:39:31,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:31,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:39:31,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:31,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:39:31,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:39:31,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:39:31,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 440 transitions, 4970 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:31,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:31,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:39:31,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:38,597 INFO L130 PetriNetUnfolder]: 1969/6713 cut-off events. [2022-11-16 12:39:38,597 INFO L131 PetriNetUnfolder]: For 174447/174488 co-relation queries the response was YES. [2022-11-16 12:39:38,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40667 conditions, 6713 events. 1969/6713 cut-off events. For 174447/174488 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 62459 event pairs, 464 based on Foata normal form. 11/6438 useless extension candidates. Maximal degree in co-relation 40423. Up to 2184 conditions per place. [2022-11-16 12:39:38,699 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 553 selfloop transitions, 55 changer transitions 36/736 dead transitions. [2022-11-16 12:39:38,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 736 transitions, 11441 flow [2022-11-16 12:39:38,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:39:38,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:39:38,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3700 transitions. [2022-11-16 12:39:38,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6368330464716007 [2022-11-16 12:39:38,704 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3700 transitions. [2022-11-16 12:39:38,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3700 transitions. [2022-11-16 12:39:38,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:38,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3700 transitions. [2022-11-16 12:39:38,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 105.71428571428571) internal successors, (3700), 35 states have internal predecessors, (3700), 0 states have call successors, (0), 0 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 12:39:38,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:38,712 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:38,712 INFO L175 Difference]: Start difference. First operand has 570 places, 440 transitions, 4970 flow. Second operand 35 states and 3700 transitions. [2022-11-16 12:39:38,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 736 transitions, 11441 flow [2022-11-16 12:39:40,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 736 transitions, 10712 flow, removed 334 selfloop flow, removed 18 redundant places. [2022-11-16 12:39:40,075 INFO L231 Difference]: Finished difference. Result has 597 places, 464 transitions, 5373 flow [2022-11-16 12:39:40,075 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4412, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5373, PETRI_PLACES=597, PETRI_TRANSITIONS=464} [2022-11-16 12:39:40,075 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 446 predicate places. [2022-11-16 12:39:40,075 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 464 transitions, 5373 flow [2022-11-16 12:39:40,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:40,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:40,076 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] [2022-11-16 12:39:40,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-16 12:39:40,077 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:39:40,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:40,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1064064553, now seen corresponding path program 15 times [2022-11-16 12:39:40,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:40,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859630323] [2022-11-16 12:39:40,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:40,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:39:41,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:41,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859630323] [2022-11-16 12:39:41,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859630323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:41,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:41,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:39:41,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324317099] [2022-11-16 12:39:41,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:41,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:39:41,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:39:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:39:41,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:39:41,061 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 464 transitions, 5373 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:41,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:41,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:39:41,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:39:48,515 INFO L130 PetriNetUnfolder]: 2183/7428 cut-off events. [2022-11-16 12:39:48,515 INFO L131 PetriNetUnfolder]: For 216307/216355 co-relation queries the response was YES. [2022-11-16 12:39:48,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46982 conditions, 7428 events. 2183/7428 cut-off events. For 216307/216355 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 71223 event pairs, 561 based on Foata normal form. 13/7100 useless extension candidates. Maximal degree in co-relation 46727. Up to 2337 conditions per place. [2022-11-16 12:39:48,675 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 642 selfloop transitions, 96 changer transitions 43/873 dead transitions. [2022-11-16 12:39:48,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 873 transitions, 15311 flow [2022-11-16 12:39:48,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 12:39:48,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 12:39:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3667 transitions. [2022-11-16 12:39:48,679 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6311531841652324 [2022-11-16 12:39:48,679 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3667 transitions. [2022-11-16 12:39:48,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3667 transitions. [2022-11-16 12:39:48,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:39:48,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3667 transitions. [2022-11-16 12:39:48,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 104.77142857142857) internal successors, (3667), 35 states have internal predecessors, (3667), 0 states have call successors, (0), 0 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 12:39:48,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:48,686 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 166.0) internal successors, (5976), 36 states have internal predecessors, (5976), 0 states have call successors, (0), 0 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 12:39:48,686 INFO L175 Difference]: Start difference. First operand has 597 places, 464 transitions, 5373 flow. Second operand 35 states and 3667 transitions. [2022-11-16 12:39:48,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 873 transitions, 15311 flow [2022-11-16 12:39:50,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 873 transitions, 14579 flow, removed 315 selfloop flow, removed 20 redundant places. [2022-11-16 12:39:50,427 INFO L231 Difference]: Finished difference. Result has 627 places, 493 transitions, 6196 flow [2022-11-16 12:39:50,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=4834, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6196, PETRI_PLACES=627, PETRI_TRANSITIONS=493} [2022-11-16 12:39:50,428 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 476 predicate places. [2022-11-16 12:39:50,429 INFO L495 AbstractCegarLoop]: Abstraction has has 627 places, 493 transitions, 6196 flow [2022-11-16 12:39:50,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:50,429 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:39:50,430 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] [2022-11-16 12:39:50,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-16 12:39:50,430 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:39:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:39:50,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1906938823, now seen corresponding path program 16 times [2022-11-16 12:39:50,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:39:50,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444843084] [2022-11-16 12:39:50,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:39:50,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:39:50,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:39:51,422 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 12:39:51,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:39:51,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444843084] [2022-11-16 12:39:51,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444843084] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:39:51,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:39:51,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:39:51,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230608019] [2022-11-16 12:39:51,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:39:51,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:39:51,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:39:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:39:51,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:39:51,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:39:51,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 493 transitions, 6196 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:39:51,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:39:51,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:39:51,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:03,660 INFO L130 PetriNetUnfolder]: 2725/9203 cut-off events. [2022-11-16 12:40:03,660 INFO L131 PetriNetUnfolder]: For 328451/328497 co-relation queries the response was YES. [2022-11-16 12:40:03,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62127 conditions, 9203 events. 2725/9203 cut-off events. For 328451/328497 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 91913 event pairs, 986 based on Foata normal form. 10/8795 useless extension candidates. Maximal degree in co-relation 61855. Up to 2900 conditions per place. [2022-11-16 12:40:03,846 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 669 selfloop transitions, 34 changer transitions 76/871 dead transitions. [2022-11-16 12:40:03,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 871 transitions, 14810 flow [2022-11-16 12:40:03,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-16 12:40:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-16 12:40:03,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 5547 transitions. [2022-11-16 12:40:03,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6304842009547624 [2022-11-16 12:40:03,855 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 5547 transitions. [2022-11-16 12:40:03,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 5547 transitions. [2022-11-16 12:40:03,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:03,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 5547 transitions. [2022-11-16 12:40:03,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 104.66037735849056) internal successors, (5547), 53 states have internal predecessors, (5547), 0 states have call successors, (0), 0 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 12:40:03,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 166.0) internal successors, (8964), 54 states have internal predecessors, (8964), 0 states have call successors, (0), 0 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 12:40:03,872 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 166.0) internal successors, (8964), 54 states have internal predecessors, (8964), 0 states have call successors, (0), 0 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 12:40:03,872 INFO L175 Difference]: Start difference. First operand has 627 places, 493 transitions, 6196 flow. Second operand 53 states and 5547 transitions. [2022-11-16 12:40:03,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 871 transitions, 14810 flow [2022-11-16 12:40:06,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 871 transitions, 13970 flow, removed 415 selfloop flow, removed 16 redundant places. [2022-11-16 12:40:06,845 INFO L231 Difference]: Finished difference. Result has 698 places, 507 transitions, 6197 flow [2022-11-16 12:40:06,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=166, PETRI_DIFFERENCE_MINUEND_FLOW=5572, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6197, PETRI_PLACES=698, PETRI_TRANSITIONS=507} [2022-11-16 12:40:06,846 INFO L288 CegarLoopForPetriNet]: 151 programPoint places, 547 predicate places. [2022-11-16 12:40:06,846 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 507 transitions, 6197 flow [2022-11-16 12:40:06,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:40:06,847 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:40:06,847 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] [2022-11-16 12:40:06,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-16 12:40:06,847 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:40:06,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:40:06,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1408734073, now seen corresponding path program 17 times [2022-11-16 12:40:06,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:40:06,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594199971] [2022-11-16 12:40:06,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:40:06,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:40:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:40:07,655 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 12:40:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:40:07,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594199971] [2022-11-16 12:40:07,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594199971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:40:07,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:40:07,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-16 12:40:07,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618007432] [2022-11-16 12:40:07,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:40:07,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-16 12:40:07,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:40:07,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-16 12:40:07,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=592, Unknown=0, NotChecked=0, Total=650 [2022-11-16 12:40:07,659 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 166 [2022-11-16 12:40:07,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 507 transitions, 6197 flow. Second operand has 26 states, 26 states have (on average 99.07692307692308) internal successors, (2576), 26 states have internal predecessors, (2576), 0 states have call successors, (0), 0 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 12:40:07,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:40:07,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 166 [2022-11-16 12:40:07,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:40:19,598 INFO L130 PetriNetUnfolder]: 2740/9451 cut-off events. [2022-11-16 12:40:19,599 INFO L131 PetriNetUnfolder]: For 415053/415105 co-relation queries the response was YES. [2022-11-16 12:40:19,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67246 conditions, 9451 events. 2740/9451 cut-off events. For 415053/415105 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 96114 event pairs, 635 based on Foata normal form. 16/9058 useless extension candidates. Maximal degree in co-relation 66939. Up to 3744 conditions per place. [2022-11-16 12:40:19,795 INFO L137 encePairwiseOnDemand]: 135/166 looper letters, 624 selfloop transitions, 75 changer transitions 112/903 dead transitions. [2022-11-16 12:40:19,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 903 transitions, 15087 flow [2022-11-16 12:40:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-16 12:40:19,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-11-16 12:40:19,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 6402 transitions. [2022-11-16 12:40:19,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.622036533229693 [2022-11-16 12:40:19,804 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 6402 transitions. [2022-11-16 12:40:19,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 6402 transitions. [2022-11-16 12:40:19,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:40:19,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 6402 transitions. [2022-11-16 12:40:19,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 103.25806451612904) internal successors, (6402), 62 states have internal predecessors, (6402), 0 states have call successors, (0), 0 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 12:40:19,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 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 12:40:19,819 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 166.0) internal successors, (10458), 63 states have internal predecessors, (10458), 0 states have call successors, (0), 0 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 12:40:19,819 INFO L175 Difference]: Start difference. First operand has 698 places, 507 transitions, 6197 flow. Second operand 62 states and 6402 transitions. [2022-11-16 12:40:19,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 903 transitions, 15087 flow