./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc --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 95e3bac7f28ae020b684175cea363a5866905518c289fbd40a07a7a3764acade --- 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-5e519f3 [2022-11-02 20:45:34,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:45:34,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:45:34,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:45:34,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:45:34,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:45:34,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:45:34,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:45:34,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:45:34,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:45:34,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:45:34,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:45:34,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:45:34,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:45:34,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:45:34,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:45:34,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:45:34,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:45:34,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:45:34,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:45:34,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:45:34,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:45:34,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:45:34,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:45:34,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:45:34,935 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:45:34,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:45:34,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:45:34,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:45:34,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:45:34,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:45:34,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:45:34,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:45:34,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:45:34,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:45:34,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:45:34,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:45:34,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:45:34,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:45:34,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:45:34,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:45:34,957 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:45:34,997 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:45:34,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:45:34,997 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:45:34,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:45:34,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:45:34,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:45:34,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:45:34,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:45:34,999 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:45:35,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:45:35,000 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:45:35,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:45:35,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:45:35,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:45:35,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:45:35,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:45:35,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:45:35,001 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:45:35,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:45:35,001 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:45:35,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:45:35,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:45:35,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:45:35,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:45:35,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:35,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:45:35,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:45:35,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:45:35,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:45:35,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:45:35,005 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:45:35,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:45:35,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:45:35,006 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_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95e3bac7f28ae020b684175cea363a5866905518c289fbd40a07a7a3764acade [2022-11-02 20:45:35,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:45:35,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:45:35,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:45:35,394 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:45:35,395 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:45:35,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2022-11-02 20:45:35,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/data/fe281234d/d1719c0f43c84be8980037f1e0236407/FLAGa8965f6e6 [2022-11-02 20:45:35,986 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:45:35,987 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2022-11-02 20:45:35,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/data/fe281234d/d1719c0f43c84be8980037f1e0236407/FLAGa8965f6e6 [2022-11-02 20:45:36,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/data/fe281234d/d1719c0f43c84be8980037f1e0236407 [2022-11-02 20:45:36,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:45:36,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:45:36,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:36,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:45:36,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:45:36,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c75f101 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36, skipping insertion in model container [2022-11-02 20:45:36,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:45:36,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:45:36,665 WARN L230 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_f7edeed5-3c17-4004-a4f0-04fca188a4c9/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2641,2654] [2022-11-02 20:45:36,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:36,682 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:45:36,708 WARN L230 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_f7edeed5-3c17-4004-a4f0-04fca188a4c9/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2641,2654] [2022-11-02 20:45:36,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:45:36,726 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:45:36,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36 WrapperNode [2022-11-02 20:45:36,727 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:45:36,728 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:36,728 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:45:36,729 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:45:36,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,772 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 162 [2022-11-02 20:45:36,773 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:45:36,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:45:36,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:45:36,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:45:36,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,804 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:45:36,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:45:36,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:45:36,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:45:36,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (1/1) ... [2022-11-02 20:45:36,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:45:36,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:36,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:45:36,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:45:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:45:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:45:36,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:45:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:45:36,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:45:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:45:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:45:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:45:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:45:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:45:36,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:45:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:45:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:45:36,914 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:45:37,029 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:45:37,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:45:37,436 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:45:37,446 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:45:37,446 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:45:37,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:37 BoogieIcfgContainer [2022-11-02 20:45:37,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:45:37,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:45:37,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:45:37,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:45:37,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:45:36" (1/3) ... [2022-11-02 20:45:37,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec7441d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:37, skipping insertion in model container [2022-11-02 20:45:37,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:45:36" (2/3) ... [2022-11-02 20:45:37,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec7441d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:45:37, skipping insertion in model container [2022-11-02 20:45:37,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:45:37" (3/3) ... [2022-11-02 20:45:37,459 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2022-11-02 20:45:37,468 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:45:37,480 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:45:37,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:45:37,481 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:45:37,599 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 20:45:37,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 209 transitions, 434 flow [2022-11-02 20:45:37,744 INFO L130 PetriNetUnfolder]: 18/207 cut-off events. [2022-11-02 20:45:37,745 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:45:37,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 207 events. 18/207 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 319 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 111. Up to 2 conditions per place. [2022-11-02 20:45:37,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 209 transitions, 434 flow [2022-11-02 20:45:37,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 198 transitions, 408 flow [2022-11-02 20:45:37,787 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:45:37,793 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;@783aefa0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:45:37,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 20:45:37,839 INFO L130 PetriNetUnfolder]: 16/181 cut-off events. [2022-11-02 20:45:37,839 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 20:45:37,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:37,840 INFO L208 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] [2022-11-02 20:45:37,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:37,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2043723559, now seen corresponding path program 1 times [2022-11-02 20:45:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:37,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235437295] [2022-11-02 20:45:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:38,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:38,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:38,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235437295] [2022-11-02 20:45:38,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235437295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:38,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:38,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:45:38,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850336678] [2022-11-02 20:45:38,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:38,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:45:38,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:38,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:45:38,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:45:38,192 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 209 [2022-11-02 20:45:38,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 198 transitions, 408 flow. Second operand has 2 states, 2 states have (on average 193.5) internal successors, (387), 2 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:38,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:38,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 209 [2022-11-02 20:45:38,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:38,270 INFO L130 PetriNetUnfolder]: 5/185 cut-off events. [2022-11-02 20:45:38,279 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-02 20:45:38,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 185 events. 5/185 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 281 event pairs, 0 based on Foata normal form. 16/186 useless extension candidates. Maximal degree in co-relation 104. Up to 5 conditions per place. [2022-11-02 20:45:38,283 INFO L137 encePairwiseOnDemand]: 196/209 looper letters, 4 selfloop transitions, 0 changer transitions 4/185 dead transitions. [2022-11-02 20:45:38,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 185 transitions, 390 flow [2022-11-02 20:45:38,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:45:38,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:45:38,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 399 transitions. [2022-11-02 20:45:38,306 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9545454545454546 [2022-11-02 20:45:38,307 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 399 transitions. [2022-11-02 20:45:38,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 399 transitions. [2022-11-02 20:45:38,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:38,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 399 transitions. [2022-11-02 20:45:38,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 199.5) internal successors, (399), 2 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:38,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:38,330 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:38,332 INFO L175 Difference]: Start difference. First operand has 187 places, 198 transitions, 408 flow. Second operand 2 states and 399 transitions. [2022-11-02 20:45:38,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 185 transitions, 390 flow [2022-11-02 20:45:38,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 185 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:45:38,346 INFO L231 Difference]: Finished difference. Result has 184 places, 181 transitions, 366 flow [2022-11-02 20:45:38,348 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=366, PETRI_PLACES=184, PETRI_TRANSITIONS=181} [2022-11-02 20:45:38,356 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, -3 predicate places. [2022-11-02 20:45:38,356 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 181 transitions, 366 flow [2022-11-02 20:45:38,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 193.5) internal successors, (387), 2 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:38,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:38,358 INFO L208 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] [2022-11-02 20:45:38,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:45:38,359 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:38,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:38,360 INFO L85 PathProgramCache]: Analyzing trace with hash 317017016, now seen corresponding path program 1 times [2022-11-02 20:45:38,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:38,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957846411] [2022-11-02 20:45:38,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:38,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:38,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:38,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957846411] [2022-11-02 20:45:38,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957846411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:38,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:38,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:45:38,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663741595] [2022-11-02 20:45:38,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:38,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:45:38,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:45:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:45:38,943 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 209 [2022-11-02 20:45:38,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 181 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:38,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:38,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 209 [2022-11-02 20:45:38,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:39,214 INFO L130 PetriNetUnfolder]: 158/782 cut-off events. [2022-11-02 20:45:39,214 INFO L131 PetriNetUnfolder]: For 29/29 co-relation queries the response was YES. [2022-11-02 20:45:39,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1056 conditions, 782 events. 158/782 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3974 event pairs, 34 based on Foata normal form. 0/661 useless extension candidates. Maximal degree in co-relation 1053. Up to 169 conditions per place. [2022-11-02 20:45:39,221 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 39 selfloop transitions, 7 changer transitions 0/202 dead transitions. [2022-11-02 20:45:39,221 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 202 transitions, 502 flow [2022-11-02 20:45:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:45:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:45:39,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 727 transitions. [2022-11-02 20:45:39,224 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8696172248803827 [2022-11-02 20:45:39,224 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 727 transitions. [2022-11-02 20:45:39,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 727 transitions. [2022-11-02 20:45:39,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:39,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 727 transitions. [2022-11-02 20:45:39,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.75) internal successors, (727), 4 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:39,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:39,231 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 209.0) internal successors, (1045), 5 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:39,231 INFO L175 Difference]: Start difference. First operand has 184 places, 181 transitions, 366 flow. Second operand 4 states and 727 transitions. [2022-11-02 20:45:39,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 202 transitions, 502 flow [2022-11-02 20:45:39,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 202 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:45:39,236 INFO L231 Difference]: Finished difference. Result has 185 places, 187 transitions, 413 flow [2022-11-02 20:45:39,237 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=185, PETRI_TRANSITIONS=187} [2022-11-02 20:45:39,238 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, -2 predicate places. [2022-11-02 20:45:39,238 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 187 transitions, 413 flow [2022-11-02 20:45:39,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.75) internal successors, (691), 4 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:39,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:39,239 INFO L208 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] [2022-11-02 20:45:39,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:45:39,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:39,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:39,240 INFO L85 PathProgramCache]: Analyzing trace with hash -282437434, now seen corresponding path program 1 times [2022-11-02 20:45:39,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:39,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97193593] [2022-11-02 20:45:39,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:39,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:39,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:39,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97193593] [2022-11-02 20:45:39,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97193593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:39,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:39,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:39,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593191245] [2022-11-02 20:45:39,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:39,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:39,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:39,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:39,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:39,617 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-11-02 20:45:39,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 187 transitions, 413 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:39,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:39,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-11-02 20:45:39,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:40,077 INFO L130 PetriNetUnfolder]: 366/1796 cut-off events. [2022-11-02 20:45:40,077 INFO L131 PetriNetUnfolder]: For 193/195 co-relation queries the response was YES. [2022-11-02 20:45:40,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 1796 events. 366/1796 cut-off events. For 193/195 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13052 event pairs, 130 based on Foata normal form. 2/1652 useless extension candidates. Maximal degree in co-relation 2731. Up to 371 conditions per place. [2022-11-02 20:45:40,091 INFO L137 encePairwiseOnDemand]: 201/209 looper letters, 83 selfloop transitions, 7 changer transitions 0/243 dead transitions. [2022-11-02 20:45:40,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 243 transitions, 774 flow [2022-11-02 20:45:40,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:45:40,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:45:40,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1077 transitions. [2022-11-02 20:45:40,094 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8588516746411483 [2022-11-02 20:45:40,095 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1077 transitions. [2022-11-02 20:45:40,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1077 transitions. [2022-11-02 20:45:40,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:40,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1077 transitions. [2022-11-02 20:45:40,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.5) internal successors, (1077), 6 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:40,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:40,104 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:40,104 INFO L175 Difference]: Start difference. First operand has 185 places, 187 transitions, 413 flow. Second operand 6 states and 1077 transitions. [2022-11-02 20:45:40,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 243 transitions, 774 flow [2022-11-02 20:45:40,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 243 transitions, 774 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:45:40,112 INFO L231 Difference]: Finished difference. Result has 193 places, 191 transitions, 459 flow [2022-11-02 20:45:40,113 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=459, PETRI_PLACES=193, PETRI_TRANSITIONS=191} [2022-11-02 20:45:40,115 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 6 predicate places. [2022-11-02 20:45:40,115 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 191 transitions, 459 flow [2022-11-02 20:45:40,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:40,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:40,116 INFO L208 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] [2022-11-02 20:45:40,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:45:40,117 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:40,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:40,118 INFO L85 PathProgramCache]: Analyzing trace with hash 749567470, now seen corresponding path program 2 times [2022-11-02 20:45:40,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:40,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816809695] [2022-11-02 20:45:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:40,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:40,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:40,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:40,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:40,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816809695] [2022-11-02 20:45:40,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816809695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:40,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:40,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406726068] [2022-11-02 20:45:40,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:40,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:40,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:40,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:40,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:40,553 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-11-02 20:45:40,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 191 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:40,555 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:40,555 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-11-02 20:45:40,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:41,117 INFO L130 PetriNetUnfolder]: 407/2024 cut-off events. [2022-11-02 20:45:41,117 INFO L131 PetriNetUnfolder]: For 546/548 co-relation queries the response was YES. [2022-11-02 20:45:41,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3326 conditions, 2024 events. 407/2024 cut-off events. For 546/548 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 15263 event pairs, 184 based on Foata normal form. 10/1900 useless extension candidates. Maximal degree in co-relation 3316. Up to 407 conditions per place. [2022-11-02 20:45:41,134 INFO L137 encePairwiseOnDemand]: 201/209 looper letters, 71 selfloop transitions, 13 changer transitions 0/237 dead transitions. [2022-11-02 20:45:41,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 237 transitions, 791 flow [2022-11-02 20:45:41,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:45:41,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:45:41,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1244 transitions. [2022-11-02 20:45:41,138 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8503075871496925 [2022-11-02 20:45:41,138 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1244 transitions. [2022-11-02 20:45:41,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1244 transitions. [2022-11-02 20:45:41,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:41,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1244 transitions. [2022-11-02 20:45:41,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 177.71428571428572) internal successors, (1244), 7 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:41,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 209.0) internal successors, (1672), 8 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:41,151 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 209.0) internal successors, (1672), 8 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:41,151 INFO L175 Difference]: Start difference. First operand has 193 places, 191 transitions, 459 flow. Second operand 7 states and 1244 transitions. [2022-11-02 20:45:41,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 237 transitions, 791 flow [2022-11-02 20:45:41,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 237 transitions, 765 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-11-02 20:45:41,164 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 534 flow [2022-11-02 20:45:41,165 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=534, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-11-02 20:45:41,167 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 15 predicate places. [2022-11-02 20:45:41,167 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 534 flow [2022-11-02 20:45:41,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:41,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:41,170 INFO L208 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] [2022-11-02 20:45:41,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:45:41,170 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:41,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:41,172 INFO L85 PathProgramCache]: Analyzing trace with hash 21117964, now seen corresponding path program 3 times [2022-11-02 20:45:41,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:41,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770877686] [2022-11-02 20:45:41,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:41,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:41,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:41,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:41,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770877686] [2022-11-02 20:45:41,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770877686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:41,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:41,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:41,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125526403] [2022-11-02 20:45:41,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:41,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:41,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:41,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:41,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:41,519 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-11-02 20:45:41,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 534 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:41,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:41,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-11-02 20:45:41,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:42,036 INFO L130 PetriNetUnfolder]: 440/2219 cut-off events. [2022-11-02 20:45:42,037 INFO L131 PetriNetUnfolder]: For 1416/1428 co-relation queries the response was YES. [2022-11-02 20:45:42,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 2219 events. 440/2219 cut-off events. For 1416/1428 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 17142 event pairs, 226 based on Foata normal form. 3/2051 useless extension candidates. Maximal degree in co-relation 3931. Up to 404 conditions per place. [2022-11-02 20:45:42,055 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 77 selfloop transitions, 16 changer transitions 0/246 dead transitions. [2022-11-02 20:45:42,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 246 transitions, 960 flow [2022-11-02 20:45:42,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:45:42,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:45:42,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 907 transitions. [2022-11-02 20:45:42,058 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8679425837320575 [2022-11-02 20:45:42,058 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 907 transitions. [2022-11-02 20:45:42,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 907 transitions. [2022-11-02 20:45:42,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:42,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 907 transitions. [2022-11-02 20:45:42,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 181.4) internal successors, (907), 5 states have internal predecessors, (907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:42,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:42,064 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:42,064 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 534 flow. Second operand 5 states and 907 transitions. [2022-11-02 20:45:42,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 246 transitions, 960 flow [2022-11-02 20:45:42,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 246 transitions, 949 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:45:42,074 INFO L231 Difference]: Finished difference. Result has 208 places, 204 transitions, 672 flow [2022-11-02 20:45:42,074 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=672, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2022-11-02 20:45:42,077 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 21 predicate places. [2022-11-02 20:45:42,078 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 672 flow [2022-11-02 20:45:42,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:42,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:42,078 INFO L208 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] [2022-11-02 20:45:42,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:45:42,079 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:42,081 INFO L85 PathProgramCache]: Analyzing trace with hash 336336672, now seen corresponding path program 4 times [2022-11-02 20:45:42,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:42,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94431583] [2022-11-02 20:45:42,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:42,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:42,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:42,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94431583] [2022-11-02 20:45:42,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94431583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:42,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:42,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:42,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035640480] [2022-11-02 20:45:42,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:42,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:42,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:42,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:42,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:42,550 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-11-02 20:45:42,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 672 flow. Second operand has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:42,552 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:42,552 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-11-02 20:45:42,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:43,150 INFO L130 PetriNetUnfolder]: 439/2238 cut-off events. [2022-11-02 20:45:43,151 INFO L131 PetriNetUnfolder]: For 2173/2175 co-relation queries the response was YES. [2022-11-02 20:45:43,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4223 conditions, 2238 events. 439/2238 cut-off events. For 2173/2175 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 17468 event pairs, 185 based on Foata normal form. 8/2067 useless extension candidates. Maximal degree in co-relation 4205. Up to 409 conditions per place. [2022-11-02 20:45:43,171 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 78 selfloop transitions, 18 changer transitions 0/249 dead transitions. [2022-11-02 20:45:43,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 249 transitions, 1056 flow [2022-11-02 20:45:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:45:43,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:45:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1078 transitions. [2022-11-02 20:45:43,175 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8596491228070176 [2022-11-02 20:45:43,175 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1078 transitions. [2022-11-02 20:45:43,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1078 transitions. [2022-11-02 20:45:43,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:43,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1078 transitions. [2022-11-02 20:45:43,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 179.66666666666666) internal successors, (1078), 6 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:43,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:43,181 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:43,181 INFO L175 Difference]: Start difference. First operand has 208 places, 204 transitions, 672 flow. Second operand 6 states and 1078 transitions. [2022-11-02 20:45:43,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 249 transitions, 1056 flow [2022-11-02 20:45:43,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 249 transitions, 1029 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-02 20:45:43,192 INFO L231 Difference]: Finished difference. Result has 215 places, 207 transitions, 737 flow [2022-11-02 20:45:43,193 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=737, PETRI_PLACES=215, PETRI_TRANSITIONS=207} [2022-11-02 20:45:43,194 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 28 predicate places. [2022-11-02 20:45:43,194 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 207 transitions, 737 flow [2022-11-02 20:45:43,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:43,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:43,195 INFO L208 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] [2022-11-02 20:45:43,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:45:43,195 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:43,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:43,196 INFO L85 PathProgramCache]: Analyzing trace with hash 985345640, now seen corresponding path program 5 times [2022-11-02 20:45:43,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:43,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572526120] [2022-11-02 20:45:43,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:43,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:43,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:43,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:43,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572526120] [2022-11-02 20:45:43,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572526120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:43,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:43,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:45:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8081359] [2022-11-02 20:45:43,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:43,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:45:43,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:43,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:45:43,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:45:43,443 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-11-02 20:45:43,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 207 transitions, 737 flow. Second operand has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:43,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:43,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-11-02 20:45:43,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:43,962 INFO L130 PetriNetUnfolder]: 447/2246 cut-off events. [2022-11-02 20:45:43,963 INFO L131 PetriNetUnfolder]: For 2674/2676 co-relation queries the response was YES. [2022-11-02 20:45:43,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4311 conditions, 2246 events. 447/2246 cut-off events. For 2674/2676 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 17466 event pairs, 239 based on Foata normal form. 4/2076 useless extension candidates. Maximal degree in co-relation 4290. Up to 584 conditions per place. [2022-11-02 20:45:43,984 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 63 selfloop transitions, 22 changer transitions 0/238 dead transitions. [2022-11-02 20:45:43,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 238 transitions, 1084 flow [2022-11-02 20:45:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:45:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:45:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 895 transitions. [2022-11-02 20:45:43,988 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8564593301435407 [2022-11-02 20:45:43,988 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 895 transitions. [2022-11-02 20:45:43,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 895 transitions. [2022-11-02 20:45:43,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:43,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 895 transitions. [2022-11-02 20:45:43,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:44,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:44,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:44,032 INFO L175 Difference]: Start difference. First operand has 215 places, 207 transitions, 737 flow. Second operand 5 states and 895 transitions. [2022-11-02 20:45:44,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 238 transitions, 1084 flow [2022-11-02 20:45:44,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 238 transitions, 1053 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 20:45:44,052 INFO L231 Difference]: Finished difference. Result has 220 places, 215 transitions, 880 flow [2022-11-02 20:45:44,053 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=710, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=880, PETRI_PLACES=220, PETRI_TRANSITIONS=215} [2022-11-02 20:45:44,054 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 33 predicate places. [2022-11-02 20:45:44,054 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 215 transitions, 880 flow [2022-11-02 20:45:44,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.8) internal successors, (849), 5 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:44,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:44,055 INFO L208 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] [2022-11-02 20:45:44,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:45:44,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:44,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:44,056 INFO L85 PathProgramCache]: Analyzing trace with hash 720558838, now seen corresponding path program 6 times [2022-11-02 20:45:44,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:44,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440575132] [2022-11-02 20:45:44,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:44,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:44,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:44,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440575132] [2022-11-02 20:45:44,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440575132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:44,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:45:44,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:45:44,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216986417] [2022-11-02 20:45:44,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:44,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:45:44,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:44,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:45:44,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:45:44,588 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 209 [2022-11-02 20:45:44,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 215 transitions, 880 flow. Second operand has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:44,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:44,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 209 [2022-11-02 20:45:44,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:45,126 INFO L130 PetriNetUnfolder]: 431/2163 cut-off events. [2022-11-02 20:45:45,126 INFO L131 PetriNetUnfolder]: For 3136/3138 co-relation queries the response was YES. [2022-11-02 20:45:45,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4233 conditions, 2163 events. 431/2163 cut-off events. For 3136/3138 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 16642 event pairs, 229 based on Foata normal form. 10/2010 useless extension candidates. Maximal degree in co-relation 4209. Up to 538 conditions per place. [2022-11-02 20:45:45,147 INFO L137 encePairwiseOnDemand]: 202/209 looper letters, 68 selfloop transitions, 24 changer transitions 0/245 dead transitions. [2022-11-02 20:45:45,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 245 transitions, 1176 flow [2022-11-02 20:45:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:45:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:45:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1070 transitions. [2022-11-02 20:45:45,151 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8532695374800638 [2022-11-02 20:45:45,151 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1070 transitions. [2022-11-02 20:45:45,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1070 transitions. [2022-11-02 20:45:45,152 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:45,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1070 transitions. [2022-11-02 20:45:45,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.33333333333334) internal successors, (1070), 6 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:45,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:45,158 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 209.0) internal successors, (1463), 7 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:45,158 INFO L175 Difference]: Start difference. First operand has 220 places, 215 transitions, 880 flow. Second operand 6 states and 1070 transitions. [2022-11-02 20:45:45,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 245 transitions, 1176 flow [2022-11-02 20:45:45,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 245 transitions, 1136 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-11-02 20:45:45,173 INFO L231 Difference]: Finished difference. Result has 227 places, 218 transitions, 954 flow [2022-11-02 20:45:45,174 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=954, PETRI_PLACES=227, PETRI_TRANSITIONS=218} [2022-11-02 20:45:45,176 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 40 predicate places. [2022-11-02 20:45:45,176 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 218 transitions, 954 flow [2022-11-02 20:45:45,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 169.33333333333334) internal successors, (1016), 6 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:45,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:45,177 INFO L208 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] [2022-11-02 20:45:45,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:45:45,178 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:45,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:45,178 INFO L85 PathProgramCache]: Analyzing trace with hash 860208179, now seen corresponding path program 1 times [2022-11-02 20:45:45,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:45,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143912751] [2022-11-02 20:45:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:45,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:45,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:45,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:45,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143912751] [2022-11-02 20:45:45,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143912751] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:45,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632997772] [2022-11-02 20:45:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:45,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:45,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:45,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:45,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:45:45,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:45,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:45:45,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:46,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:45:46,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:46,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:46,738 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 20:45:46,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 20:45:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:46,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632997772] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:46,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:46,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 9] total 23 [2022-11-02 20:45:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213796877] [2022-11-02 20:45:46,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:45:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:45:46,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:45:46,875 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 209 [2022-11-02 20:45:46,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 218 transitions, 954 flow. Second operand has 23 states, 23 states have (on average 113.17391304347827) internal successors, (2603), 23 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:46,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:46,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 209 [2022-11-02 20:45:46,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:53,768 INFO L130 PetriNetUnfolder]: 7206/16910 cut-off events. [2022-11-02 20:45:53,769 INFO L131 PetriNetUnfolder]: For 21287/21287 co-relation queries the response was YES. [2022-11-02 20:45:53,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36754 conditions, 16910 events. 7206/16910 cut-off events. For 21287/21287 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 158012 event pairs, 393 based on Foata normal form. 33/16077 useless extension candidates. Maximal degree in co-relation 36727. Up to 3162 conditions per place. [2022-11-02 20:45:53,974 INFO L137 encePairwiseOnDemand]: 177/209 looper letters, 673 selfloop transitions, 139 changer transitions 8/916 dead transitions. [2022-11-02 20:45:53,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 916 transitions, 5579 flow [2022-11-02 20:45:53,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-02 20:45:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-02 20:45:53,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 6235 transitions. [2022-11-02 20:45:53,993 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5737026131762973 [2022-11-02 20:45:53,993 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 6235 transitions. [2022-11-02 20:45:53,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 6235 transitions. [2022-11-02 20:45:53,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:53,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 6235 transitions. [2022-11-02 20:45:54,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 119.90384615384616) internal successors, (6235), 52 states have internal predecessors, (6235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:54,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 209.0) internal successors, (11077), 53 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:54,142 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 209.0) internal successors, (11077), 53 states have internal predecessors, (11077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:54,142 INFO L175 Difference]: Start difference. First operand has 227 places, 218 transitions, 954 flow. Second operand 52 states and 6235 transitions. [2022-11-02 20:45:54,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 916 transitions, 5579 flow [2022-11-02 20:45:54,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 916 transitions, 5384 flow, removed 29 selfloop flow, removed 2 redundant places. [2022-11-02 20:45:54,311 INFO L231 Difference]: Finished difference. Result has 307 places, 361 transitions, 2051 flow [2022-11-02 20:45:54,312 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2051, PETRI_PLACES=307, PETRI_TRANSITIONS=361} [2022-11-02 20:45:54,312 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 120 predicate places. [2022-11-02 20:45:54,313 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 361 transitions, 2051 flow [2022-11-02 20:45:54,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 113.17391304347827) internal successors, (2603), 23 states have internal predecessors, (2603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:54,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:54,315 INFO L208 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] [2022-11-02 20:45:54,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:54,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:54,528 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:54,528 INFO L85 PathProgramCache]: Analyzing trace with hash -782013607, now seen corresponding path program 2 times [2022-11-02 20:45:54,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:54,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828426693] [2022-11-02 20:45:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:54,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:55,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:45:55,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:55,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828426693] [2022-11-02 20:45:55,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828426693] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:55,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104393277] [2022-11-02 20:45:55,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:45:55,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:55,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:55,021 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:55,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:45:55,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:45:55,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:45:55,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:45:55,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:55,478 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:45:55,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104393277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:45:55,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:45:55,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-11-02 20:45:55,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244948288] [2022-11-02 20:45:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:45:55,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:45:55,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:45:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:45:55,482 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 209 [2022-11-02 20:45:55,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 361 transitions, 2051 flow. Second operand has 9 states, 9 states have (on average 140.66666666666666) internal successors, (1266), 9 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:55,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:55,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 209 [2022-11-02 20:45:55,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:45:57,037 INFO L130 PetriNetUnfolder]: 1115/5316 cut-off events. [2022-11-02 20:45:57,037 INFO L131 PetriNetUnfolder]: For 9429/9526 co-relation queries the response was YES. [2022-11-02 20:45:57,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12377 conditions, 5316 events. 1115/5316 cut-off events. For 9429/9526 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 53054 event pairs, 260 based on Foata normal form. 15/4978 useless extension candidates. Maximal degree in co-relation 12319. Up to 1393 conditions per place. [2022-11-02 20:45:57,104 INFO L137 encePairwiseOnDemand]: 188/209 looper letters, 94 selfloop transitions, 54 changer transitions 19/412 dead transitions. [2022-11-02 20:45:57,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 412 transitions, 2531 flow [2022-11-02 20:45:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:45:57,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:45:57,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1756 transitions. [2022-11-02 20:45:57,111 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7001594896331739 [2022-11-02 20:45:57,112 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1756 transitions. [2022-11-02 20:45:57,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1756 transitions. [2022-11-02 20:45:57,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:45:57,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1756 transitions. [2022-11-02 20:45:57,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 146.33333333333334) internal successors, (1756), 12 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:57,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 209.0) internal successors, (2717), 13 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:57,125 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 209.0) internal successors, (2717), 13 states have internal predecessors, (2717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:57,125 INFO L175 Difference]: Start difference. First operand has 307 places, 361 transitions, 2051 flow. Second operand 12 states and 1756 transitions. [2022-11-02 20:45:57,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 412 transitions, 2531 flow [2022-11-02 20:45:57,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 412 transitions, 2436 flow, removed 22 selfloop flow, removed 10 redundant places. [2022-11-02 20:45:57,296 INFO L231 Difference]: Finished difference. Result has 311 places, 376 transitions, 2205 flow [2022-11-02 20:45:57,296 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2205, PETRI_PLACES=311, PETRI_TRANSITIONS=376} [2022-11-02 20:45:57,297 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 124 predicate places. [2022-11-02 20:45:57,297 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 376 transitions, 2205 flow [2022-11-02 20:45:57,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 140.66666666666666) internal successors, (1266), 9 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:57,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:45:57,298 INFO L208 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] [2022-11-02 20:45:57,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:57,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:45:57,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:45:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1969625793, now seen corresponding path program 1 times [2022-11-02 20:45:57,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:57,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694016032] [2022-11-02 20:45:57,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:57,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:57,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:58,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:58,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:58,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694016032] [2022-11-02 20:45:58,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694016032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:45:58,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631760158] [2022-11-02 20:45:58,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:58,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:58,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:58,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:58,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:45:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:58,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 20:45:58,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:58,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:45:58,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:58,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:59,008 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 20:45:59,009 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 20:45:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:45:59,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631760158] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:59,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:45:59,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 9] total 22 [2022-11-02 20:45:59,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675140544] [2022-11-02 20:45:59,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:59,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:45:59,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:59,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:45:59,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:45:59,155 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 209 [2022-11-02 20:45:59,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 376 transitions, 2205 flow. Second operand has 22 states, 22 states have (on average 113.27272727272727) internal successors, (2492), 22 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:45:59,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:45:59,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 209 [2022-11-02 20:45:59,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:46:05,920 INFO L130 PetriNetUnfolder]: 8412/19444 cut-off events. [2022-11-02 20:46:05,920 INFO L131 PetriNetUnfolder]: For 51857/51953 co-relation queries the response was YES. [2022-11-02 20:46:06,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57492 conditions, 19444 events. 8412/19444 cut-off events. For 51857/51953 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 184132 event pairs, 2124 based on Foata normal form. 71/19182 useless extension candidates. Maximal degree in co-relation 57431. Up to 7605 conditions per place. [2022-11-02 20:46:06,239 INFO L137 encePairwiseOnDemand]: 178/209 looper letters, 595 selfloop transitions, 207 changer transitions 4/905 dead transitions. [2022-11-02 20:46:06,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 905 transitions, 7129 flow [2022-11-02 20:46:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-02 20:46:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-11-02 20:46:06,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 7014 transitions. [2022-11-02 20:46:06,260 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.550160796925249 [2022-11-02 20:46:06,260 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 7014 transitions. [2022-11-02 20:46:06,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 7014 transitions. [2022-11-02 20:46:06,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:46:06,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 7014 transitions. [2022-11-02 20:46:06,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 114.98360655737704) internal successors, (7014), 61 states have internal predecessors, (7014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:06,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 209.0) internal successors, (12958), 62 states have internal predecessors, (12958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:06,310 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 209.0) internal successors, (12958), 62 states have internal predecessors, (12958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:06,311 INFO L175 Difference]: Start difference. First operand has 311 places, 376 transitions, 2205 flow. Second operand 61 states and 7014 transitions. [2022-11-02 20:46:06,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 905 transitions, 7129 flow [2022-11-02 20:46:06,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 905 transitions, 7067 flow, removed 27 selfloop flow, removed 6 redundant places. [2022-11-02 20:46:06,880 INFO L231 Difference]: Finished difference. Result has 393 places, 538 transitions, 4631 flow [2022-11-02 20:46:06,881 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=376, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=4631, PETRI_PLACES=393, PETRI_TRANSITIONS=538} [2022-11-02 20:46:06,882 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 206 predicate places. [2022-11-02 20:46:06,882 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 538 transitions, 4631 flow [2022-11-02 20:46:06,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 113.27272727272727) internal successors, (2492), 22 states have internal predecessors, (2492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:06,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:46:06,883 INFO L208 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] [2022-11-02 20:46:06,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:07,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:07,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:46:07,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:07,104 INFO L85 PathProgramCache]: Analyzing trace with hash 929566179, now seen corresponding path program 2 times [2022-11-02 20:46:07,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:07,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873708329] [2022-11-02 20:46:07,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:07,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:07,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:07,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:07,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873708329] [2022-11-02 20:46:07,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873708329] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:07,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172476161] [2022-11-02 20:46:07,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:46:07,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:07,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:07,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:07,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:46:07,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:46:07,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:07,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:46:07,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:07,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:46:07,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:46:07,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172476161] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:46:07,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:46:07,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-02 20:46:07,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678071830] [2022-11-02 20:46:07,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:46:07,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:46:07,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:07,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:46:07,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:46:07,973 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 209 [2022-11-02 20:46:07,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 538 transitions, 4631 flow. Second operand has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:07,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:46:07,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 209 [2022-11-02 20:46:07,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:46:09,186 INFO L130 PetriNetUnfolder]: 935/4676 cut-off events. [2022-11-02 20:46:09,186 INFO L131 PetriNetUnfolder]: For 20182/20390 co-relation queries the response was YES. [2022-11-02 20:46:09,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14123 conditions, 4676 events. 935/4676 cut-off events. For 20182/20390 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 43881 event pairs, 177 based on Foata normal form. 108/4632 useless extension candidates. Maximal degree in co-relation 14033. Up to 610 conditions per place. [2022-11-02 20:46:09,259 INFO L137 encePairwiseOnDemand]: 201/209 looper letters, 81 selfloop transitions, 48 changer transitions 0/580 dead transitions. [2022-11-02 20:46:09,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 580 transitions, 5167 flow [2022-11-02 20:46:09,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:46:09,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:46:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1236 transitions. [2022-11-02 20:46:09,270 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8448393711551606 [2022-11-02 20:46:09,270 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1236 transitions. [2022-11-02 20:46:09,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1236 transitions. [2022-11-02 20:46:09,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:46:09,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1236 transitions. [2022-11-02 20:46:09,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 176.57142857142858) internal successors, (1236), 7 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:09,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 209.0) internal successors, (1672), 8 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:09,278 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 209.0) internal successors, (1672), 8 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:09,278 INFO L175 Difference]: Start difference. First operand has 393 places, 538 transitions, 4631 flow. Second operand 7 states and 1236 transitions. [2022-11-02 20:46:09,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 580 transitions, 5167 flow [2022-11-02 20:46:09,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 580 transitions, 4669 flow, removed 242 selfloop flow, removed 9 redundant places. [2022-11-02 20:46:09,500 INFO L231 Difference]: Finished difference. Result has 391 places, 541 transitions, 4273 flow [2022-11-02 20:46:09,501 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=4133, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=538, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4273, PETRI_PLACES=391, PETRI_TRANSITIONS=541} [2022-11-02 20:46:09,501 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 204 predicate places. [2022-11-02 20:46:09,501 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 541 transitions, 4273 flow [2022-11-02 20:46:09,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:09,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:46:09,502 INFO L208 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] [2022-11-02 20:46:09,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:09,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:46:09,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:46:09,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:09,703 INFO L85 PathProgramCache]: Analyzing trace with hash -828017971, now seen corresponding path program 1 times [2022-11-02 20:46:09,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:09,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549537445] [2022-11-02 20:46:09,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:09,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:10,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:10,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:10,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549537445] [2022-11-02 20:46:10,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549537445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:10,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775725169] [2022-11-02 20:46:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:10,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:10,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:10,656 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:10,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:46:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:10,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:46:10,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:11,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:11,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:11,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775725169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:11,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:11,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2022-11-02 20:46:11,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689959848] [2022-11-02 20:46:11,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:11,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:46:11,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:11,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:46:11,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=423, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:46:11,363 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 209 [2022-11-02 20:46:11,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 541 transitions, 4273 flow. Second operand has 23 states, 23 states have (on average 167.2608695652174) internal successors, (3847), 23 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:11,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:46:11,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 209 [2022-11-02 20:46:11,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:46:17,012 INFO L130 PetriNetUnfolder]: 1581/6951 cut-off events. [2022-11-02 20:46:17,012 INFO L131 PetriNetUnfolder]: For 30660/30734 co-relation queries the response was YES. [2022-11-02 20:46:17,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22111 conditions, 6951 events. 1581/6951 cut-off events. For 30660/30734 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 67367 event pairs, 230 based on Foata normal form. 91/6838 useless extension candidates. Maximal degree in co-relation 22019. Up to 466 conditions per place. [2022-11-02 20:46:17,105 INFO L137 encePairwiseOnDemand]: 191/209 looper letters, 309 selfloop transitions, 266 changer transitions 1/921 dead transitions. [2022-11-02 20:46:17,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 921 transitions, 8012 flow [2022-11-02 20:46:17,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 20:46:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-02 20:46:17,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 6925 transitions. [2022-11-02 20:46:17,117 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8283492822966507 [2022-11-02 20:46:17,117 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 6925 transitions. [2022-11-02 20:46:17,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 6925 transitions. [2022-11-02 20:46:17,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:46:17,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 6925 transitions. [2022-11-02 20:46:17,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 173.125) internal successors, (6925), 40 states have internal predecessors, (6925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:17,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 209.0) internal successors, (8569), 41 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:17,149 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 209.0) internal successors, (8569), 41 states have internal predecessors, (8569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:17,149 INFO L175 Difference]: Start difference. First operand has 391 places, 541 transitions, 4273 flow. Second operand 40 states and 6925 transitions. [2022-11-02 20:46:17,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 921 transitions, 8012 flow [2022-11-02 20:46:17,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 921 transitions, 7898 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:46:17,588 INFO L231 Difference]: Finished difference. Result has 455 places, 691 transitions, 6641 flow [2022-11-02 20:46:17,589 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=4219, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=6641, PETRI_PLACES=455, PETRI_TRANSITIONS=691} [2022-11-02 20:46:17,589 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 268 predicate places. [2022-11-02 20:46:17,589 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 691 transitions, 6641 flow [2022-11-02 20:46:17,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 167.2608695652174) internal successors, (3847), 23 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:17,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:46:17,590 INFO L208 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] [2022-11-02 20:46:17,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-02 20:46:17,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:46:17,791 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:46:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 988295385, now seen corresponding path program 2 times [2022-11-02 20:46:17,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:17,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814594973] [2022-11-02 20:46:17,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:17,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:18,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:18,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:18,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814594973] [2022-11-02 20:46:18,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814594973] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:18,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14609003] [2022-11-02 20:46:18,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:46:18,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:18,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:18,222 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:18,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:46:18,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:46:18,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:18,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:46:18,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:18,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:19,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14609003] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:19,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:19,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 19 [2022-11-02 20:46:19,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587393126] [2022-11-02 20:46:19,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:19,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 20:46:19,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 20:46:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:46:19,009 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 209 [2022-11-02 20:46:19,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 691 transitions, 6641 flow. Second operand has 19 states, 19 states have (on average 167.52631578947367) internal successors, (3183), 19 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:19,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:46:19,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 209 [2022-11-02 20:46:19,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:46:23,512 INFO L130 PetriNetUnfolder]: 2176/9623 cut-off events. [2022-11-02 20:46:23,512 INFO L131 PetriNetUnfolder]: For 70208/70324 co-relation queries the response was YES. [2022-11-02 20:46:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36730 conditions, 9623 events. 2176/9623 cut-off events. For 70208/70324 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 102929 event pairs, 444 based on Foata normal form. 85/9374 useless extension candidates. Maximal degree in co-relation 36612. Up to 1902 conditions per place. [2022-11-02 20:46:23,700 INFO L137 encePairwiseOnDemand]: 187/209 looper letters, 355 selfloop transitions, 356 changer transitions 6/1062 dead transitions. [2022-11-02 20:46:23,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 1062 transitions, 12566 flow [2022-11-02 20:46:23,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:46:23,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 20:46:23,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 5183 transitions. [2022-11-02 20:46:23,710 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8266347687400319 [2022-11-02 20:46:23,710 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 5183 transitions. [2022-11-02 20:46:23,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 5183 transitions. [2022-11-02 20:46:23,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:46:23,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 5183 transitions. [2022-11-02 20:46:23,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 172.76666666666668) internal successors, (5183), 30 states have internal predecessors, (5183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:23,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 209.0) internal successors, (6479), 31 states have internal predecessors, (6479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:23,733 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 209.0) internal successors, (6479), 31 states have internal predecessors, (6479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:23,733 INFO L175 Difference]: Start difference. First operand has 455 places, 691 transitions, 6641 flow. Second operand 30 states and 5183 transitions. [2022-11-02 20:46:23,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 1062 transitions, 12566 flow [2022-11-02 20:46:24,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 1062 transitions, 11787 flow, removed 297 selfloop flow, removed 6 redundant places. [2022-11-02 20:46:24,542 INFO L231 Difference]: Finished difference. Result has 493 places, 912 transitions, 10717 flow [2022-11-02 20:46:24,543 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=6191, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10717, PETRI_PLACES=493, PETRI_TRANSITIONS=912} [2022-11-02 20:46:24,543 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 306 predicate places. [2022-11-02 20:46:24,544 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 912 transitions, 10717 flow [2022-11-02 20:46:24,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 167.52631578947367) internal successors, (3183), 19 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:24,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:46:24,544 INFO L208 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] [2022-11-02 20:46:24,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:24,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:24,745 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:46:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:24,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1305372629, now seen corresponding path program 3 times [2022-11-02 20:46:24,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:24,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054575646] [2022-11-02 20:46:24,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:24,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:25,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:25,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054575646] [2022-11-02 20:46:25,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054575646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:25,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144151752] [2022-11-02 20:46:25,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:46:25,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:25,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:25,366 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:25,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:46:25,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:46:25,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:25,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:46:25,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:25,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:26,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144151752] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:26,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:26,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-11-02 20:46:26,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253732451] [2022-11-02 20:46:26,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:26,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:46:26,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:46:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:46:26,065 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 209 [2022-11-02 20:46:26,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 912 transitions, 10717 flow. Second operand has 20 states, 20 states have (on average 167.45) internal successors, (3349), 20 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:26,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:46:26,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 209 [2022-11-02 20:46:26,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:46:32,330 INFO L130 PetriNetUnfolder]: 2766/12431 cut-off events. [2022-11-02 20:46:32,331 INFO L131 PetriNetUnfolder]: For 106646/106812 co-relation queries the response was YES. [2022-11-02 20:46:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49089 conditions, 12431 events. 2766/12431 cut-off events. For 106646/106812 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 140379 event pairs, 480 based on Foata normal form. 146/12130 useless extension candidates. Maximal degree in co-relation 48961. Up to 1644 conditions per place. [2022-11-02 20:46:32,560 INFO L137 encePairwiseOnDemand]: 192/209 looper letters, 509 selfloop transitions, 559 changer transitions 0/1413 dead transitions. [2022-11-02 20:46:32,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 1413 transitions, 19679 flow [2022-11-02 20:46:32,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-02 20:46:32,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-02 20:46:32,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 7186 transitions. [2022-11-02 20:46:32,570 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8186375028480292 [2022-11-02 20:46:32,570 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 7186 transitions. [2022-11-02 20:46:32,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 7186 transitions. [2022-11-02 20:46:32,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:46:32,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 7186 transitions. [2022-11-02 20:46:32,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 171.0952380952381) internal successors, (7186), 42 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:32,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 209.0) internal successors, (8987), 43 states have internal predecessors, (8987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:32,596 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 209.0) internal successors, (8987), 43 states have internal predecessors, (8987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:32,596 INFO L175 Difference]: Start difference. First operand has 493 places, 912 transitions, 10717 flow. Second operand 42 states and 7186 transitions. [2022-11-02 20:46:32,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 1413 transitions, 19679 flow [2022-11-02 20:46:33,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 527 places, 1413 transitions, 18591 flow, removed 423 selfloop flow, removed 7 redundant places. [2022-11-02 20:46:33,768 INFO L231 Difference]: Finished difference. Result has 549 places, 1224 transitions, 16768 flow [2022-11-02 20:46:33,770 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=10011, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=912, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=16768, PETRI_PLACES=549, PETRI_TRANSITIONS=1224} [2022-11-02 20:46:33,770 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 362 predicate places. [2022-11-02 20:46:33,770 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 1224 transitions, 16768 flow [2022-11-02 20:46:33,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 167.45) internal successors, (3349), 20 states have internal predecessors, (3349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:33,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:46:33,772 INFO L208 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] [2022-11-02 20:46:33,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:46:33,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:33,988 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 20:46:33,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:46:33,988 INFO L85 PathProgramCache]: Analyzing trace with hash -478737383, now seen corresponding path program 4 times [2022-11-02 20:46:33,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:46:33,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451165408] [2022-11-02 20:46:33,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:46:33,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:46:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:46:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:46:34,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:46:34,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451165408] [2022-11-02 20:46:34,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451165408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:46:34,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797192652] [2022-11-02 20:46:34,578 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:46:34,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:46:34,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:46:34,579 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:46:34,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7edeed5-3c17-4004-a4f0-04fca188a4c9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:46:34,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:46:34,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:46:34,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:46:34,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:46:35,291 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-02 20:46:35,292 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-11-02 20:46:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:35,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:46:35,809 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 20:46:35,810 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 20:46:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:46:36,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797192652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:46:36,672 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:46:36,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 18, 18] total 36 [2022-11-02 20:46:36,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735640310] [2022-11-02 20:46:36,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:46:36,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-02 20:46:36,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:46:36,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-02 20:46:36,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2022-11-02 20:46:36,677 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 209 [2022-11-02 20:46:36,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 1224 transitions, 16768 flow. Second operand has 36 states, 36 states have (on average 88.5) internal successors, (3186), 36 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:46:36,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:46:36,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 209 [2022-11-02 20:46:36,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand