./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.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_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/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_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/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_95ec9c8c-7661-4e43-a0b5-8190531b8398/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 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:53:02,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:53:02,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:53:02,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:53:02,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:53:02,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:53:02,847 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:53:02,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:53:02,856 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:53:02,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:53:02,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:53:02,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:53:02,868 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:53:02,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:53:02,873 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:53:02,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:53:02,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:53:02,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:53:02,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:53:02,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:53:02,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:53:02,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:53:02,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:53:02,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:53:02,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:53:02,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:53:02,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:53:02,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:53:02,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:53:02,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:53:02,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:53:02,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:53:02,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:53:02,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:53:02,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:53:02,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:53:02,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:53:02,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:53:02,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:53:02,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:53:02,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:53:02,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:53:02,988 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:53:02,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:53:02,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:53:02,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:53:02,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:53:02,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:53:02,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:53:02,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:53:02,994 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:53:02,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:53:02,996 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:53:02,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:53:02,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:53:02,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:53:02,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:53:02,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:53:02,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:53:02,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:53:02,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:53:02,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:53:03,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:53:03,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:53:03,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:53:03,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:53:03,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:53:03,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:53:03,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:53:03,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:53:03,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:53:03,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:53:03,006 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:53:03,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:53:03,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:53:03,007 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_95ec9c8c-7661-4e43-a0b5-8190531b8398/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab [2022-11-16 11:53:03,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:53:03,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:53:03,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:53:03,438 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:53:03,439 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:53:03,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-16 11:53:03,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/data/ecd8f5bff/f598cdb848514beebbcd3b1921ec4c30/FLAGdfa6dad27 [2022-11-16 11:53:04,095 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:53:04,095 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-16 11:53:04,114 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/data/ecd8f5bff/f598cdb848514beebbcd3b1921ec4c30/FLAGdfa6dad27 [2022-11-16 11:53:04,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/data/ecd8f5bff/f598cdb848514beebbcd3b1921ec4c30 [2022-11-16 11:53:04,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:53:04,449 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:53:04,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:53:04,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:53:04,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:53:04,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:04,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ceccb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04, skipping insertion in model container [2022-11-16 11:53:04,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:04,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:53:04,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:53:04,817 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_95ec9c8c-7661-4e43-a0b5-8190531b8398/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-16 11:53:04,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:53:04,844 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:53:04,895 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_95ec9c8c-7661-4e43-a0b5-8190531b8398/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-16 11:53:04,897 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:53:04,925 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:53:04,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04 WrapperNode [2022-11-16 11:53:04,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:53:04,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:53:04,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:53:04,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:53:04,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:04,961 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,005 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 163 [2022-11-16 11:53:05,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:53:05,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:53:05,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:53:05,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:53:05,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,050 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:53:05,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:53:05,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:53:05,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:53:05,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (1/1) ... [2022-11-16 11:53:05,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:53:05,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:53:05,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:53:05,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95ec9c8c-7661-4e43-a0b5-8190531b8398/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:53:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:53:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:53:05,177 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:53:05,177 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:53:05,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:53:05,178 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:53:05,178 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:53:05,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:53:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:53:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:53:05,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:53:05,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:53:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:53:05,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:53:05,184 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:53:05,360 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:53:05,364 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:53:05,796 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:53:05,809 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:53:05,809 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:53:05,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:05 BoogieIcfgContainer [2022-11-16 11:53:05,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:53:05,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:53:05,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:53:05,820 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:53:05,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:53:04" (1/3) ... [2022-11-16 11:53:05,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7e36ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:05, skipping insertion in model container [2022-11-16 11:53:05,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:53:04" (2/3) ... [2022-11-16 11:53:05,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7e36ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:53:05, skipping insertion in model container [2022-11-16 11:53:05,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:53:05" (3/3) ... [2022-11-16 11:53:05,825 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2022-11-16 11:53:05,835 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:53:05,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:53:05,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:53:05,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:53:06,075 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:53:06,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 212 transitions, 448 flow [2022-11-16 11:53:06,385 INFO L130 PetriNetUnfolder]: 13/209 cut-off events. [2022-11-16 11:53:06,385 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:53:06,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 13/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 424 event pairs, 0 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-11-16 11:53:06,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 212 transitions, 448 flow [2022-11-16 11:53:06,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 198 transitions, 414 flow [2022-11-16 11:53:06,444 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:53:06,458 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;@599820f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:53:06,458 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 11:53:06,575 INFO L130 PetriNetUnfolder]: 13/197 cut-off events. [2022-11-16 11:53:06,575 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:53:06,575 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:06,577 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] [2022-11-16 11:53:06,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:06,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1058280500, now seen corresponding path program 1 times [2022-11-16 11:53:06,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:06,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442347405] [2022-11-16 11:53:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:06,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:07,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:07,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442347405] [2022-11-16 11:53:07,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442347405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:07,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:07,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:53:07,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611705905] [2022-11-16 11:53:07,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:07,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:53:07,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:07,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:53:07,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:53:07,937 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-16 11:53:07,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 198 transitions, 414 flow. Second operand has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:07,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:07,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-16 11:53:07,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:08,702 INFO L130 PetriNetUnfolder]: 127/1374 cut-off events. [2022-11-16 11:53:08,702 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-16 11:53:08,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1680 conditions, 1374 events. 127/1374 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11328 event pairs, 14 based on Foata normal form. 83/1315 useless extension candidates. Maximal degree in co-relation 1485. Up to 44 conditions per place. [2022-11-16 11:53:08,724 INFO L137 encePairwiseOnDemand]: 192/212 looper letters, 50 selfloop transitions, 17 changer transitions 11/247 dead transitions. [2022-11-16 11:53:08,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 247 transitions, 731 flow [2022-11-16 11:53:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:53:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:53:08,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2475 transitions. [2022-11-16 11:53:08,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8980406386066764 [2022-11-16 11:53:08,760 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2475 transitions. [2022-11-16 11:53:08,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2475 transitions. [2022-11-16 11:53:08,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:08,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2475 transitions. [2022-11-16 11:53:08,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 190.3846153846154) internal successors, (2475), 13 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,825 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,827 INFO L175 Difference]: Start difference. First operand has 195 places, 198 transitions, 414 flow. Second operand 13 states and 2475 transitions. [2022-11-16 11:53:08,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 247 transitions, 731 flow [2022-11-16 11:53:08,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 247 transitions, 677 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:53:08,841 INFO L231 Difference]: Finished difference. Result has 208 places, 205 transitions, 501 flow [2022-11-16 11:53:08,844 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=501, PETRI_PLACES=208, PETRI_TRANSITIONS=205} [2022-11-16 11:53:08,848 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 13 predicate places. [2022-11-16 11:53:08,849 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 205 transitions, 501 flow [2022-11-16 11:53:08,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:08,850 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:08,850 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] [2022-11-16 11:53:08,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:53:08,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:08,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:08,853 INFO L85 PathProgramCache]: Analyzing trace with hash -510055688, now seen corresponding path program 2 times [2022-11-16 11:53:08,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:08,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071850597] [2022-11-16 11:53:08,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:08,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:09,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:09,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:09,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071850597] [2022-11-16 11:53:09,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071850597] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:09,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:09,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:53:09,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283108550] [2022-11-16 11:53:09,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:09,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:53:09,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:09,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:53:09,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:53:09,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-16 11:53:09,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 205 transitions, 501 flow. Second operand has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:09,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:09,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-16 11:53:09,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:09,685 INFO L130 PetriNetUnfolder]: 97/1032 cut-off events. [2022-11-16 11:53:09,685 INFO L131 PetriNetUnfolder]: For 204/210 co-relation queries the response was YES. [2022-11-16 11:53:09,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1545 conditions, 1032 events. 97/1032 cut-off events. For 204/210 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7908 event pairs, 13 based on Foata normal form. 12/970 useless extension candidates. Maximal degree in co-relation 1510. Up to 68 conditions per place. [2022-11-16 11:53:09,706 INFO L137 encePairwiseOnDemand]: 199/212 looper letters, 48 selfloop transitions, 16 changer transitions 4/237 dead transitions. [2022-11-16 11:53:09,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 237 transitions, 764 flow [2022-11-16 11:53:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:53:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:53:09,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1512 transitions. [2022-11-16 11:53:09,712 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8915094339622641 [2022-11-16 11:53:09,713 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1512 transitions. [2022-11-16 11:53:09,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1512 transitions. [2022-11-16 11:53:09,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:09,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1512 transitions. [2022-11-16 11:53:09,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:09,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:09,726 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:09,726 INFO L175 Difference]: Start difference. First operand has 208 places, 205 transitions, 501 flow. Second operand 8 states and 1512 transitions. [2022-11-16 11:53:09,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 237 transitions, 764 flow [2022-11-16 11:53:09,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 237 transitions, 754 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:09,750 INFO L231 Difference]: Finished difference. Result has 214 places, 213 transitions, 625 flow [2022-11-16 11:53:09,750 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=625, PETRI_PLACES=214, PETRI_TRANSITIONS=213} [2022-11-16 11:53:09,751 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 19 predicate places. [2022-11-16 11:53:09,752 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 213 transitions, 625 flow [2022-11-16 11:53:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:09,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:09,754 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] [2022-11-16 11:53:09,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:53:09,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash 644824466, now seen corresponding path program 3 times [2022-11-16 11:53:09,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:09,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483658459] [2022-11-16 11:53:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:09,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:10,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:10,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:10,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483658459] [2022-11-16 11:53:10,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483658459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:10,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:10,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:53:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981929200] [2022-11-16 11:53:10,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:10,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:53:10,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:10,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:53:10,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:53:10,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 212 [2022-11-16 11:53:10,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 213 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:10,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:10,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 212 [2022-11-16 11:53:10,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:10,689 INFO L130 PetriNetUnfolder]: 126/1590 cut-off events. [2022-11-16 11:53:10,689 INFO L131 PetriNetUnfolder]: For 523/537 co-relation queries the response was YES. [2022-11-16 11:53:10,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2250 conditions, 1590 events. 126/1590 cut-off events. For 523/537 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13367 event pairs, 24 based on Foata normal form. 1/1469 useless extension candidates. Maximal degree in co-relation 2215. Up to 99 conditions per place. [2022-11-16 11:53:10,713 INFO L137 encePairwiseOnDemand]: 200/212 looper letters, 44 selfloop transitions, 20 changer transitions 6/239 dead transitions. [2022-11-16 11:53:10,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 239 transitions, 875 flow [2022-11-16 11:53:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:53:10,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:53:10,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1696 transitions. [2022-11-16 11:53:10,720 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-16 11:53:10,721 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1696 transitions. [2022-11-16 11:53:10,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1696 transitions. [2022-11-16 11:53:10,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:10,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1696 transitions. [2022-11-16 11:53:10,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 188.44444444444446) internal successors, (1696), 9 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:10,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:10,739 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:10,739 INFO L175 Difference]: Start difference. First operand has 214 places, 213 transitions, 625 flow. Second operand 9 states and 1696 transitions. [2022-11-16 11:53:10,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 239 transitions, 875 flow [2022-11-16 11:53:10,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 239 transitions, 849 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-11-16 11:53:10,752 INFO L231 Difference]: Finished difference. Result has 221 places, 215 transitions, 690 flow [2022-11-16 11:53:10,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=690, PETRI_PLACES=221, PETRI_TRANSITIONS=215} [2022-11-16 11:53:10,756 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 26 predicate places. [2022-11-16 11:53:10,756 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 215 transitions, 690 flow [2022-11-16 11:53:10,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 184.42857142857142) internal successors, (1291), 7 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:10,757 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:10,758 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] [2022-11-16 11:53:10,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:53:10,758 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:10,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:10,760 INFO L85 PathProgramCache]: Analyzing trace with hash 229963557, now seen corresponding path program 1 times [2022-11-16 11:53:10,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:10,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072686616] [2022-11-16 11:53:10,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:10,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:10,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:11,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:11,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:11,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072686616] [2022-11-16 11:53:11,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072686616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:11,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:11,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:53:11,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677161749] [2022-11-16 11:53:11,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:11,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:53:11,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:11,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:53:11,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:53:11,063 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 212 [2022-11-16 11:53:11,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 215 transitions, 690 flow. Second operand has 8 states, 8 states have (on average 183.5) internal successors, (1468), 8 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:11,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:11,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 212 [2022-11-16 11:53:11,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:11,952 INFO L130 PetriNetUnfolder]: 589/2977 cut-off events. [2022-11-16 11:53:11,953 INFO L131 PetriNetUnfolder]: For 2229/2526 co-relation queries the response was YES. [2022-11-16 11:53:11,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5232 conditions, 2977 events. 589/2977 cut-off events. For 2229/2526 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 27966 event pairs, 314 based on Foata normal form. 101/2855 useless extension candidates. Maximal degree in co-relation 5194. Up to 695 conditions per place. [2022-11-16 11:53:11,990 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 45 selfloop transitions, 7 changer transitions 14/254 dead transitions. [2022-11-16 11:53:11,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 254 transitions, 1070 flow [2022-11-16 11:53:11,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:53:11,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:53:11,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1862 transitions. [2022-11-16 11:53:11,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783018867924528 [2022-11-16 11:53:11,996 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1862 transitions. [2022-11-16 11:53:11,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1862 transitions. [2022-11-16 11:53:11,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:11,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1862 transitions. [2022-11-16 11:53:12,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 186.2) internal successors, (1862), 10 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,010 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,010 INFO L175 Difference]: Start difference. First operand has 221 places, 215 transitions, 690 flow. Second operand 10 states and 1862 transitions. [2022-11-16 11:53:12,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 254 transitions, 1070 flow [2022-11-16 11:53:12,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 254 transitions, 1055 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-16 11:53:12,024 INFO L231 Difference]: Finished difference. Result has 232 places, 219 transitions, 724 flow [2022-11-16 11:53:12,025 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=724, PETRI_PLACES=232, PETRI_TRANSITIONS=219} [2022-11-16 11:53:12,026 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 37 predicate places. [2022-11-16 11:53:12,026 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 219 transitions, 724 flow [2022-11-16 11:53:12,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 183.5) internal successors, (1468), 8 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,032 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:12,033 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] [2022-11-16 11:53:12,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:53:12,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:12,034 INFO L85 PathProgramCache]: Analyzing trace with hash 693441621, now seen corresponding path program 1 times [2022-11-16 11:53:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:12,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707769244] [2022-11-16 11:53:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:12,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:12,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:12,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707769244] [2022-11-16 11:53:12,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707769244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:12,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:12,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:12,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418046223] [2022-11-16 11:53:12,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:12,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:12,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:12,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:12,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:12,097 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 212 [2022-11-16 11:53:12,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 219 transitions, 724 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:12,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 212 [2022-11-16 11:53:12,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:12,853 INFO L130 PetriNetUnfolder]: 99/2266 cut-off events. [2022-11-16 11:53:12,853 INFO L131 PetriNetUnfolder]: For 612/675 co-relation queries the response was YES. [2022-11-16 11:53:12,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3223 conditions, 2266 events. 99/2266 cut-off events. For 612/675 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 20023 event pairs, 23 based on Foata normal form. 1/2104 useless extension candidates. Maximal degree in co-relation 3176. Up to 99 conditions per place. [2022-11-16 11:53:12,883 INFO L137 encePairwiseOnDemand]: 208/212 looper letters, 17 selfloop transitions, 2 changer transitions 0/226 dead transitions. [2022-11-16 11:53:12,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 226 transitions, 781 flow [2022-11-16 11:53:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2022-11-16 11:53:12,890 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9386792452830188 [2022-11-16 11:53:12,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2022-11-16 11:53:12,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2022-11-16 11:53:12,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:12,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2022-11-16 11:53:12,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,896 INFO L175 Difference]: Start difference. First operand has 232 places, 219 transitions, 724 flow. Second operand 3 states and 597 transitions. [2022-11-16 11:53:12,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 226 transitions, 781 flow [2022-11-16 11:53:12,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 226 transitions, 772 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-16 11:53:12,913 INFO L231 Difference]: Finished difference. Result has 230 places, 221 transitions, 735 flow [2022-11-16 11:53:12,914 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=735, PETRI_PLACES=230, PETRI_TRANSITIONS=221} [2022-11-16 11:53:12,917 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 35 predicate places. [2022-11-16 11:53:12,917 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 221 transitions, 735 flow [2022-11-16 11:53:12,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:12,918 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:12,918 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] [2022-11-16 11:53:12,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:53:12,919 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:12,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash -2146383957, now seen corresponding path program 2 times [2022-11-16 11:53:12,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:12,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580282186] [2022-11-16 11:53:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:12,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:12,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:12,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580282186] [2022-11-16 11:53:12,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580282186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:12,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:12,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:12,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687851395] [2022-11-16 11:53:12,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:12,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:12,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:12,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:12,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:12,998 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 212 [2022-11-16 11:53:13,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 221 transitions, 735 flow. Second operand has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:13,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 212 [2022-11-16 11:53:13,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:13,579 INFO L130 PetriNetUnfolder]: 65/1785 cut-off events. [2022-11-16 11:53:13,579 INFO L131 PetriNetUnfolder]: For 513/546 co-relation queries the response was YES. [2022-11-16 11:53:13,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 1785 events. 65/1785 cut-off events. For 513/546 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 13939 event pairs, 26 based on Foata normal form. 12/1677 useless extension candidates. Maximal degree in co-relation 2177. Up to 62 conditions per place. [2022-11-16 11:53:13,599 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 17 selfloop transitions, 4 changer transitions 0/228 dead transitions. [2022-11-16 11:53:13,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 228 transitions, 800 flow [2022-11-16 11:53:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:13,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 597 transitions. [2022-11-16 11:53:13,607 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9386792452830188 [2022-11-16 11:53:13,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 597 transitions. [2022-11-16 11:53:13,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 597 transitions. [2022-11-16 11:53:13,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:13,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 597 transitions. [2022-11-16 11:53:13,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,612 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,613 INFO L175 Difference]: Start difference. First operand has 230 places, 221 transitions, 735 flow. Second operand 3 states and 597 transitions. [2022-11-16 11:53:13,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 228 transitions, 800 flow [2022-11-16 11:53:13,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 228 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:53:13,630 INFO L231 Difference]: Finished difference. Result has 233 places, 223 transitions, 765 flow [2022-11-16 11:53:13,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=765, PETRI_PLACES=233, PETRI_TRANSITIONS=223} [2022-11-16 11:53:13,634 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 38 predicate places. [2022-11-16 11:53:13,634 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 223 transitions, 765 flow [2022-11-16 11:53:13,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:13,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:13,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:53:13,636 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:13,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:13,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1633305316, now seen corresponding path program 1 times [2022-11-16 11:53:13,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:13,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737425677] [2022-11-16 11:53:13,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:13,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:13,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:13,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:13,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737425677] [2022-11-16 11:53:13,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737425677] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:13,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:13,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:53:13,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088965387] [2022-11-16 11:53:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:13,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:53:13,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:13,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:53:13,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:53:13,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 212 [2022-11-16 11:53:13,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 223 transitions, 765 flow. Second operand has 7 states, 7 states have (on average 187.28571428571428) internal successors, (1311), 7 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:13,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:13,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 212 [2022-11-16 11:53:13,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:14,422 INFO L130 PetriNetUnfolder]: 73/1355 cut-off events. [2022-11-16 11:53:14,423 INFO L131 PetriNetUnfolder]: For 553/622 co-relation queries the response was YES. [2022-11-16 11:53:14,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 1355 events. 73/1355 cut-off events. For 553/622 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10542 event pairs, 36 based on Foata normal form. 8/1275 useless extension candidates. Maximal degree in co-relation 2020. Up to 161 conditions per place. [2022-11-16 11:53:14,442 INFO L137 encePairwiseOnDemand]: 204/212 looper letters, 23 selfloop transitions, 1 changer transitions 25/243 dead transitions. [2022-11-16 11:53:14,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 243 transitions, 942 flow [2022-11-16 11:53:14,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:53:14,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:53:14,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1704 transitions. [2022-11-16 11:53:14,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8930817610062893 [2022-11-16 11:53:14,448 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1704 transitions. [2022-11-16 11:53:14,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1704 transitions. [2022-11-16 11:53:14,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:14,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1704 transitions. [2022-11-16 11:53:14,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.33333333333334) internal successors, (1704), 9 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,465 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,465 INFO L175 Difference]: Start difference. First operand has 233 places, 223 transitions, 765 flow. Second operand 9 states and 1704 transitions. [2022-11-16 11:53:14,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 243 transitions, 942 flow [2022-11-16 11:53:14,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 243 transitions, 930 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 11:53:14,477 INFO L231 Difference]: Finished difference. Result has 246 places, 218 transitions, 726 flow [2022-11-16 11:53:14,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=726, PETRI_PLACES=246, PETRI_TRANSITIONS=218} [2022-11-16 11:53:14,478 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 51 predicate places. [2022-11-16 11:53:14,478 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 218 transitions, 726 flow [2022-11-16 11:53:14,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 187.28571428571428) internal successors, (1311), 7 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:14,480 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] [2022-11-16 11:53:14,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:53:14,480 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:14,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:14,481 INFO L85 PathProgramCache]: Analyzing trace with hash 782358272, now seen corresponding path program 1 times [2022-11-16 11:53:14,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:14,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270818443] [2022-11-16 11:53:14,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:14,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:14,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:14,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270818443] [2022-11-16 11:53:14,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270818443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:14,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:14,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:53:14,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210976042] [2022-11-16 11:53:14,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:14,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:53:14,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:14,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:53:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:53:14,781 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 212 [2022-11-16 11:53:14,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 218 transitions, 726 flow. Second operand has 7 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:14,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:14,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 212 [2022-11-16 11:53:14,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:16,184 INFO L130 PetriNetUnfolder]: 412/5060 cut-off events. [2022-11-16 11:53:16,184 INFO L131 PetriNetUnfolder]: For 501/552 co-relation queries the response was YES. [2022-11-16 11:53:16,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6835 conditions, 5060 events. 412/5060 cut-off events. For 501/552 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 55983 event pairs, 191 based on Foata normal form. 4/4591 useless extension candidates. Maximal degree in co-relation 6801. Up to 437 conditions per place. [2022-11-16 11:53:16,273 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 34 selfloop transitions, 5 changer transitions 13/245 dead transitions. [2022-11-16 11:53:16,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 245 transitions, 911 flow [2022-11-16 11:53:16,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:53:16,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:53:16,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1500 transitions. [2022-11-16 11:53:16,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8844339622641509 [2022-11-16 11:53:16,281 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1500 transitions. [2022-11-16 11:53:16,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1500 transitions. [2022-11-16 11:53:16,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:16,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1500 transitions. [2022-11-16 11:53:16,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 187.5) internal successors, (1500), 8 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:16,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:16,299 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:16,299 INFO L175 Difference]: Start difference. First operand has 246 places, 218 transitions, 726 flow. Second operand 8 states and 1500 transitions. [2022-11-16 11:53:16,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 245 transitions, 911 flow [2022-11-16 11:53:16,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 245 transitions, 851 flow, removed 16 selfloop flow, removed 11 redundant places. [2022-11-16 11:53:16,319 INFO L231 Difference]: Finished difference. Result has 242 places, 220 transitions, 705 flow [2022-11-16 11:53:16,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=705, PETRI_PLACES=242, PETRI_TRANSITIONS=220} [2022-11-16 11:53:16,323 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 47 predicate places. [2022-11-16 11:53:16,323 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 220 transitions, 705 flow [2022-11-16 11:53:16,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:16,324 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:16,325 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] [2022-11-16 11:53:16,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:53:16,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:16,326 INFO L85 PathProgramCache]: Analyzing trace with hash 999993946, now seen corresponding path program 2 times [2022-11-16 11:53:16,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:16,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487011196] [2022-11-16 11:53:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:16,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:16,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:16,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487011196] [2022-11-16 11:53:16,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487011196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:16,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:16,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:53:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34656847] [2022-11-16 11:53:16,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:16,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:53:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:53:16,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:53:16,714 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 212 [2022-11-16 11:53:16,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 220 transitions, 705 flow. Second operand has 8 states, 8 states have (on average 179.625) internal successors, (1437), 8 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:16,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:16,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 212 [2022-11-16 11:53:16,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:18,590 INFO L130 PetriNetUnfolder]: 970/6641 cut-off events. [2022-11-16 11:53:18,591 INFO L131 PetriNetUnfolder]: For 3363/3600 co-relation queries the response was YES. [2022-11-16 11:53:18,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11342 conditions, 6641 events. 970/6641 cut-off events. For 3363/3600 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 74328 event pairs, 655 based on Foata normal form. 110/6253 useless extension candidates. Maximal degree in co-relation 11306. Up to 1399 conditions per place. [2022-11-16 11:53:18,669 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 59 selfloop transitions, 11 changer transitions 12/267 dead transitions. [2022-11-16 11:53:18,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 267 transitions, 1116 flow [2022-11-16 11:53:18,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:53:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:53:18,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1838 transitions. [2022-11-16 11:53:18,675 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8669811320754717 [2022-11-16 11:53:18,675 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1838 transitions. [2022-11-16 11:53:18,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1838 transitions. [2022-11-16 11:53:18,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:18,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1838 transitions. [2022-11-16 11:53:18,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 183.8) internal successors, (1838), 10 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:18,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:18,710 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 212.0) internal successors, (2332), 11 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:18,710 INFO L175 Difference]: Start difference. First operand has 242 places, 220 transitions, 705 flow. Second operand 10 states and 1838 transitions. [2022-11-16 11:53:18,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 267 transitions, 1116 flow [2022-11-16 11:53:18,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 267 transitions, 1078 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-16 11:53:18,732 INFO L231 Difference]: Finished difference. Result has 250 places, 225 transitions, 760 flow [2022-11-16 11:53:18,732 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=760, PETRI_PLACES=250, PETRI_TRANSITIONS=225} [2022-11-16 11:53:18,734 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 55 predicate places. [2022-11-16 11:53:18,734 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 225 transitions, 760 flow [2022-11-16 11:53:18,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 179.625) internal successors, (1437), 8 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:18,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:18,735 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] [2022-11-16 11:53:18,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:53:18,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:18,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:18,736 INFO L85 PathProgramCache]: Analyzing trace with hash 573001442, now seen corresponding path program 3 times [2022-11-16 11:53:18,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:18,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822608298] [2022-11-16 11:53:18,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:18,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:18,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:19,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:19,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:19,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822608298] [2022-11-16 11:53:19,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822608298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:19,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:19,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:53:19,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155036842] [2022-11-16 11:53:19,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:19,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:53:19,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:53:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:53:19,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 212 [2022-11-16 11:53:19,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 225 transitions, 760 flow. Second operand has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:19,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:19,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 212 [2022-11-16 11:53:19,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:21,041 INFO L130 PetriNetUnfolder]: 1109/7857 cut-off events. [2022-11-16 11:53:21,041 INFO L131 PetriNetUnfolder]: For 4803/5075 co-relation queries the response was YES. [2022-11-16 11:53:21,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14267 conditions, 7857 events. 1109/7857 cut-off events. For 4803/5075 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 91753 event pairs, 494 based on Foata normal form. 132/7432 useless extension candidates. Maximal degree in co-relation 14228. Up to 1417 conditions per place. [2022-11-16 11:53:21,153 INFO L137 encePairwiseOnDemand]: 194/212 looper letters, 49 selfloop transitions, 25 changer transitions 7/266 dead transitions. [2022-11-16 11:53:21,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 266 transitions, 1148 flow [2022-11-16 11:53:21,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:53:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:53:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1655 transitions. [2022-11-16 11:53:21,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8674004192872118 [2022-11-16 11:53:21,158 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1655 transitions. [2022-11-16 11:53:21,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1655 transitions. [2022-11-16 11:53:21,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:21,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1655 transitions. [2022-11-16 11:53:21,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 183.88888888888889) internal successors, (1655), 9 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:21,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:21,170 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:21,171 INFO L175 Difference]: Start difference. First operand has 250 places, 225 transitions, 760 flow. Second operand 9 states and 1655 transitions. [2022-11-16 11:53:21,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 266 transitions, 1148 flow [2022-11-16 11:53:21,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 266 transitions, 1130 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-16 11:53:21,215 INFO L231 Difference]: Finished difference. Result has 260 places, 241 transitions, 972 flow [2022-11-16 11:53:21,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=972, PETRI_PLACES=260, PETRI_TRANSITIONS=241} [2022-11-16 11:53:21,217 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 65 predicate places. [2022-11-16 11:53:21,217 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 241 transitions, 972 flow [2022-11-16 11:53:21,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:21,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:21,218 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] [2022-11-16 11:53:21,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:53:21,219 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:21,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:21,219 INFO L85 PathProgramCache]: Analyzing trace with hash 612573492, now seen corresponding path program 4 times [2022-11-16 11:53:21,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:21,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027815757] [2022-11-16 11:53:21,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:21,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:21,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:21,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027815757] [2022-11-16 11:53:21,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027815757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:21,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:21,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:53:21,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054158871] [2022-11-16 11:53:21,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:21,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:53:21,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:21,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:53:21,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:53:21,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 212 [2022-11-16 11:53:21,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 241 transitions, 972 flow. Second operand has 7 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:21,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:21,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 212 [2022-11-16 11:53:21,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:22,721 INFO L130 PetriNetUnfolder]: 467/5183 cut-off events. [2022-11-16 11:53:22,721 INFO L131 PetriNetUnfolder]: For 3939/4336 co-relation queries the response was YES. [2022-11-16 11:53:22,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9300 conditions, 5183 events. 467/5183 cut-off events. For 3939/4336 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 57841 event pairs, 256 based on Foata normal form. 7/4779 useless extension candidates. Maximal degree in co-relation 9256. Up to 826 conditions per place. [2022-11-16 11:53:22,806 INFO L137 encePairwiseOnDemand]: 205/212 looper letters, 31 selfloop transitions, 0 changer transitions 41/256 dead transitions. [2022-11-16 11:53:22,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 256 transitions, 1157 flow [2022-11-16 11:53:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:53:22,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:53:22,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1491 transitions. [2022-11-16 11:53:22,813 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.879127358490566 [2022-11-16 11:53:22,813 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1491 transitions. [2022-11-16 11:53:22,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1491 transitions. [2022-11-16 11:53:22,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:22,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1491 transitions. [2022-11-16 11:53:22,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 186.375) internal successors, (1491), 8 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,829 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 212.0) internal successors, (1908), 9 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,829 INFO L175 Difference]: Start difference. First operand has 260 places, 241 transitions, 972 flow. Second operand 8 states and 1491 transitions. [2022-11-16 11:53:22,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 256 transitions, 1157 flow [2022-11-16 11:53:22,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 256 transitions, 1139 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-16 11:53:22,866 INFO L231 Difference]: Finished difference. Result has 266 places, 215 transitions, 728 flow [2022-11-16 11:53:22,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=728, PETRI_PLACES=266, PETRI_TRANSITIONS=215} [2022-11-16 11:53:22,867 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 71 predicate places. [2022-11-16 11:53:22,867 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 215 transitions, 728 flow [2022-11-16 11:53:22,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 183.42857142857142) internal successors, (1284), 7 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,868 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:22,868 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] [2022-11-16 11:53:22,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:53:22,869 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:22,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:22,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1094927387, now seen corresponding path program 1 times [2022-11-16 11:53:22,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:22,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840024176] [2022-11-16 11:53:22,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:22,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:22,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840024176] [2022-11-16 11:53:22,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840024176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:22,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:22,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:22,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473076276] [2022-11-16 11:53:22,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:22,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:22,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:22,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:22,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:22,941 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 212 [2022-11-16 11:53:22,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 215 transitions, 728 flow. Second operand has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:22,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:22,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 212 [2022-11-16 11:53:22,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:23,466 INFO L130 PetriNetUnfolder]: 75/2162 cut-off events. [2022-11-16 11:53:23,466 INFO L131 PetriNetUnfolder]: For 1042/1151 co-relation queries the response was YES. [2022-11-16 11:53:23,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3386 conditions, 2162 events. 75/2162 cut-off events. For 1042/1151 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 19159 event pairs, 16 based on Foata normal form. 19/2042 useless extension candidates. Maximal degree in co-relation 3347. Up to 98 conditions per place. [2022-11-16 11:53:23,492 INFO L137 encePairwiseOnDemand]: 208/212 looper letters, 16 selfloop transitions, 2 changer transitions 3/212 dead transitions. [2022-11-16 11:53:23,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 212 transitions, 734 flow [2022-11-16 11:53:23,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:23,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2022-11-16 11:53:23,495 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2022-11-16 11:53:23,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2022-11-16 11:53:23,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2022-11-16 11:53:23,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:23,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2022-11-16 11:53:23,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,502 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,502 INFO L175 Difference]: Start difference. First operand has 266 places, 215 transitions, 728 flow. Second operand 3 states and 592 transitions. [2022-11-16 11:53:23,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 212 transitions, 734 flow [2022-11-16 11:53:23,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 212 transitions, 664 flow, removed 17 selfloop flow, removed 21 redundant places. [2022-11-16 11:53:23,517 INFO L231 Difference]: Finished difference. Result has 229 places, 207 transitions, 613 flow [2022-11-16 11:53:23,518 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=613, PETRI_PLACES=229, PETRI_TRANSITIONS=207} [2022-11-16 11:53:23,519 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 34 predicate places. [2022-11-16 11:53:23,520 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 207 transitions, 613 flow [2022-11-16 11:53:23,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.33333333333334) internal successors, (583), 3 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,520 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:23,521 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:23,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:53:23,521 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:23,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:23,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1128305519, now seen corresponding path program 1 times [2022-11-16 11:53:23,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:23,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664975695] [2022-11-16 11:53:23,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:23,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:23,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:23,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664975695] [2022-11-16 11:53:23,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664975695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:23,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:23,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:53:23,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283139657] [2022-11-16 11:53:23,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:23,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:53:23,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:53:23,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:53:23,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 212 [2022-11-16 11:53:23,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 207 transitions, 613 flow. Second operand has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:23,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:23,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 212 [2022-11-16 11:53:23,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:24,031 INFO L130 PetriNetUnfolder]: 84/1622 cut-off events. [2022-11-16 11:53:24,032 INFO L131 PetriNetUnfolder]: For 672/906 co-relation queries the response was YES. [2022-11-16 11:53:24,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 1622 events. 84/1622 cut-off events. For 672/906 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12238 event pairs, 32 based on Foata normal form. 54/1578 useless extension candidates. Maximal degree in co-relation 2599. Up to 118 conditions per place. [2022-11-16 11:53:24,056 INFO L137 encePairwiseOnDemand]: 206/212 looper letters, 17 selfloop transitions, 4 changer transitions 3/210 dead transitions. [2022-11-16 11:53:24,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 210 transitions, 667 flow [2022-11-16 11:53:24,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:53:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:53:24,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 592 transitions. [2022-11-16 11:53:24,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9308176100628931 [2022-11-16 11:53:24,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 592 transitions. [2022-11-16 11:53:24,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 592 transitions. [2022-11-16 11:53:24,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:24,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 592 transitions. [2022-11-16 11:53:24,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.33333333333334) internal successors, (592), 3 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 212.0) internal successors, (848), 4 states have internal predecessors, (848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,066 INFO L175 Difference]: Start difference. First operand has 229 places, 207 transitions, 613 flow. Second operand 3 states and 592 transitions. [2022-11-16 11:53:24,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 210 transitions, 667 flow [2022-11-16 11:53:24,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 210 transitions, 650 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-16 11:53:24,079 INFO L231 Difference]: Finished difference. Result has 227 places, 206 transitions, 615 flow [2022-11-16 11:53:24,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=615, PETRI_PLACES=227, PETRI_TRANSITIONS=206} [2022-11-16 11:53:24,081 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 32 predicate places. [2022-11-16 11:53:24,081 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 206 transitions, 615 flow [2022-11-16 11:53:24,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.33333333333334) internal successors, (580), 3 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:24,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:24,082 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:24,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:53:24,083 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:53:24,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:24,084 INFO L85 PathProgramCache]: Analyzing trace with hash 648384916, now seen corresponding path program 1 times [2022-11-16 11:53:24,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:24,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114362420] [2022-11-16 11:53:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:24,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:24,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:53:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:53:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:53:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114362420] [2022-11-16 11:53:25,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114362420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:53:25,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:53:25,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-16 11:53:25,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628200807] [2022-11-16 11:53:25,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:53:25,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:53:25,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:53:25,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:53:25,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:53:25,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 212 [2022-11-16 11:53:25,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 206 transitions, 615 flow. Second operand has 28 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:25,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:53:25,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 212 [2022-11-16 11:53:25,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:06,181 INFO L130 PetriNetUnfolder]: 27233/59640 cut-off events. [2022-11-16 11:54:06,181 INFO L131 PetriNetUnfolder]: For 19800/19891 co-relation queries the response was YES. [2022-11-16 11:54:06,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120405 conditions, 59640 events. 27233/59640 cut-off events. For 19800/19891 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 635039 event pairs, 1585 based on Foata normal form. 7/57750 useless extension candidates. Maximal degree in co-relation 120382. Up to 5325 conditions per place. [2022-11-16 11:54:06,841 INFO L137 encePairwiseOnDemand]: 176/212 looper letters, 1192 selfloop transitions, 101 changer transitions 735/2155 dead transitions. [2022-11-16 11:54:06,841 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 2155 transitions, 10044 flow [2022-11-16 11:54:06,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2022-11-16 11:54:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2022-11-16 11:54:06,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 32438 transitions. [2022-11-16 11:54:06,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.651103974307507 [2022-11-16 11:54:06,919 INFO L72 ComplementDD]: Start complementDD. Operand 235 states and 32438 transitions. [2022-11-16 11:54:06,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 235 states and 32438 transitions. [2022-11-16 11:54:06,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:54:06,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 235 states and 32438 transitions. [2022-11-16 11:54:07,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 236 states, 235 states have (on average 138.03404255319148) internal successors, (32438), 235 states have internal predecessors, (32438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 236 states, 236 states have (on average 212.0) internal successors, (50032), 236 states have internal predecessors, (50032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,150 INFO L81 ComplementDD]: Finished complementDD. Result has 236 states, 236 states have (on average 212.0) internal successors, (50032), 236 states have internal predecessors, (50032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,150 INFO L175 Difference]: Start difference. First operand has 227 places, 206 transitions, 615 flow. Second operand 235 states and 32438 transitions. [2022-11-16 11:54:07,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 2155 transitions, 10044 flow [2022-11-16 11:54:07,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 2155 transitions, 10032 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 11:54:07,556 INFO L231 Difference]: Finished difference. Result has 682 places, 294 transitions, 1972 flow [2022-11-16 11:54:07,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=235, PETRI_FLOW=1972, PETRI_PLACES=682, PETRI_TRANSITIONS=294} [2022-11-16 11:54:07,558 INFO L288 CegarLoopForPetriNet]: 195 programPoint places, 487 predicate places. [2022-11-16 11:54:07,558 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 294 transitions, 1972 flow [2022-11-16 11:54:07,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:07,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:54:07,561 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:07,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:54:07,561 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:54:07,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:07,562 INFO L85 PathProgramCache]: Analyzing trace with hash 461149168, now seen corresponding path program 2 times [2022-11-16 11:54:07,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:07,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958066128] [2022-11-16 11:54:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:07,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:08,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:08,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:08,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958066128] [2022-11-16 11:54:08,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958066128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:08,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:08,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-16 11:54:08,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231766585] [2022-11-16 11:54:08,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:08,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 11:54:08,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:08,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 11:54:08,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=703, Unknown=0, NotChecked=0, Total=756 [2022-11-16 11:54:08,952 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 212 [2022-11-16 11:54:08,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 294 transitions, 1972 flow. Second operand has 28 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:08,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:08,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 212 [2022-11-16 11:54:08,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand