./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.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_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/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_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/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_3b6259ce-a392-4589-8ba0-9355638e3b42/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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- 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 20:47:32,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:47:32,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:47:32,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:47:32,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:47:32,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:47:32,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:47:32,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:47:32,827 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:47:32,832 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:47:32,833 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:47:32,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:47:32,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:47:32,839 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:47:32,840 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:47:32,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:47:32,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:47:32,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:47:32,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:47:32,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:47:32,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:47:32,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:47:32,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:47:32,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:47:32,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:47:32,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:47:32,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:47:32,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:47:32,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:47:32,873 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:47:32,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:47:32,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:47:32,876 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:47:32,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:47:32,878 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:47:32,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:47:32,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:47:32,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:47:32,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:47:32,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:47:32,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:47:32,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:47:32,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:47:32,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:47:32,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:47:32,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:47:32,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:47:32,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:47:32,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:47:32,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:47:32,922 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:47:32,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:47:32,924 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:47:32,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:47:32,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:47:32,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:47:32,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:47:32,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:47:32,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:47:32,926 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:47:32,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:47:32,926 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:47:32,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:47:32,927 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:47:32,927 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:47:32,927 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:47:32,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:32,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:47:32,928 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:47:32,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:47:32,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:47:32,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:47:32,929 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:47:32,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:47:32,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:47:32,930 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_3b6259ce-a392-4589-8ba0-9355638e3b42/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2022-11-02 20:47:33,228 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:47:33,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:47:33,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:47:33,254 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:47:33,255 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:47:33,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-02 20:47:33,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/data/bc9566af2/c60479cbcb5b4544b55eeb64b91ec60d/FLAG3c80e5b6c [2022-11-02 20:47:33,787 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:47:33,788 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-11-02 20:47:33,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/data/bc9566af2/c60479cbcb5b4544b55eeb64b91ec60d/FLAG3c80e5b6c [2022-11-02 20:47:34,165 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/data/bc9566af2/c60479cbcb5b4544b55eeb64b91ec60d [2022-11-02 20:47:34,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:47:34,169 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:47:34,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:34,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:47:34,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:47:34,175 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50edfbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34, skipping insertion in model container [2022-11-02 20:47:34,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:47:34,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:47:34,431 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_3b6259ce-a392-4589-8ba0-9355638e3b42/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-02 20:47:34,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:34,447 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:47:34,473 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_3b6259ce-a392-4589-8ba0-9355638e3b42/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2022-11-02 20:47:34,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:47:34,490 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:47:34,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34 WrapperNode [2022-11-02 20:47:34,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:47:34,491 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:34,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:47:34,492 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:47:34,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,565 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 257 [2022-11-02 20:47:34,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:47:34,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:47:34,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:47:34,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:47:34,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,595 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:47:34,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:47:34,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:47:34,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:47:34,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (1/1) ... [2022-11-02 20:47:34,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:47:34,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:47:34,688 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:47:34,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b6259ce-a392-4589-8ba0-9355638e3b42/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:47:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:47:34,741 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:47:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:47:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:47:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:47:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:47:34,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:47:34,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:47:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:47:34,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:47:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:47:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:47:34,743 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:47:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:47:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:47:34,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:47:34,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:47:34,746 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 20:47:34,925 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:47:34,936 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:47:35,356 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:47:35,477 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:47:35,477 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-02 20:47:35,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:35 BoogieIcfgContainer [2022-11-02 20:47:35,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:47:35,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:47:35,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:47:35,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:47:35,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:47:34" (1/3) ... [2022-11-02 20:47:35,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a588004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:35, skipping insertion in model container [2022-11-02 20:47:35,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:47:34" (2/3) ... [2022-11-02 20:47:35,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a588004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:47:35, skipping insertion in model container [2022-11-02 20:47:35,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:47:35" (3/3) ... [2022-11-02 20:47:35,489 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-11-02 20:47:35,498 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:47:35,508 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:47:35,508 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:47:35,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:47:35,627 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:47:35,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 223 transitions, 470 flow [2022-11-02 20:47:35,822 INFO L130 PetriNetUnfolder]: 18/220 cut-off events. [2022-11-02 20:47:35,822 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:47:35,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 220 events. 18/220 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 123 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2022-11-02 20:47:35,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 223 transitions, 470 flow [2022-11-02 20:47:35,843 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 209 transitions, 436 flow [2022-11-02 20:47:35,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:47:35,868 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;@3d1e7bc1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:47:35,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:47:35,934 INFO L130 PetriNetUnfolder]: 18/208 cut-off events. [2022-11-02 20:47:35,934 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:47:35,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:35,935 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, 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 20:47:35,936 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:35,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:35,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1187189117, now seen corresponding path program 1 times [2022-11-02 20:47:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:35,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965380233] [2022-11-02 20:47:35,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:35,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:36,279 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 20:47:36,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:36,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965380233] [2022-11-02 20:47:36,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965380233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:36,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:36,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:47:36,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187314563] [2022-11-02 20:47:36,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:36,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:47:36,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:36,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:47:36,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:47:36,337 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 223 [2022-11-02 20:47:36,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 209 transitions, 436 flow. Second operand has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 20:47:36,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:36,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 223 [2022-11-02 20:47:36,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:36,525 INFO L130 PetriNetUnfolder]: 71/400 cut-off events. [2022-11-02 20:47:36,525 INFO L131 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2022-11-02 20:47:36,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 400 events. 71/400 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1174 event pairs, 38 based on Foata normal form. 60/419 useless extension candidates. Maximal degree in co-relation 353. Up to 106 conditions per place. [2022-11-02 20:47:36,533 INFO L137 encePairwiseOnDemand]: 210/223 looper letters, 11 selfloop transitions, 0 changer transitions 6/196 dead transitions. [2022-11-02 20:47:36,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 432 flow [2022-11-02 20:47:36,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:47:36,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:47:36,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 420 transitions. [2022-11-02 20:47:36,557 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9417040358744395 [2022-11-02 20:47:36,558 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 420 transitions. [2022-11-02 20:47:36,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 420 transitions. [2022-11-02 20:47:36,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:36,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 420 transitions. [2022-11-02 20:47:36,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 20:47:36,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states 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 20:47:36,582 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states 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 20:47:36,584 INFO L175 Difference]: Start difference. First operand has 201 places, 209 transitions, 436 flow. Second operand 2 states and 420 transitions. [2022-11-02 20:47:36,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 432 flow [2022-11-02 20:47:36,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 420 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:47:36,599 INFO L231 Difference]: Finished difference. Result has 196 places, 190 transitions, 386 flow [2022-11-02 20:47:36,602 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=386, PETRI_PLACES=196, PETRI_TRANSITIONS=190} [2022-11-02 20:47:36,606 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, -5 predicate places. [2022-11-02 20:47:36,606 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 386 flow [2022-11-02 20:47:36,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.0) internal successors, (406), 2 states have internal predecessors, (406), 0 states have call successors, (0), 0 states 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 20:47:36,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:36,608 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:36,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:47:36,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:36,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:36,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015543, now seen corresponding path program 1 times [2022-11-02 20:47:36,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:36,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759845406] [2022-11-02 20:47:36,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:36,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:37,301 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 20:47:37,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:37,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759845406] [2022-11-02 20:47:37,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759845406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:37,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:37,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:47:37,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965424435] [2022-11-02 20:47:37,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:37,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:47:37,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:47:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:47:37,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 223 [2022-11-02 20:47:37,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 190 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states 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 20:47:37,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:37,312 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 223 [2022-11-02 20:47:37,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:37,605 INFO L130 PetriNetUnfolder]: 73/481 cut-off events. [2022-11-02 20:47:37,605 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-02 20:47:37,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 481 events. 73/481 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1463 event pairs, 38 based on Foata normal form. 11/453 useless extension candidates. Maximal degree in co-relation 649. Up to 118 conditions per place. [2022-11-02 20:47:37,610 INFO L137 encePairwiseOnDemand]: 211/223 looper letters, 33 selfloop transitions, 8 changer transitions 17/211 dead transitions. [2022-11-02 20:47:37,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 211 transitions, 547 flow [2022-11-02 20:47:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:47:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:47:37,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1609 transitions. [2022-11-02 20:47:37,625 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8016940707523668 [2022-11-02 20:47:37,626 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1609 transitions. [2022-11-02 20:47:37,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1609 transitions. [2022-11-02 20:47:37,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:37,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1609 transitions. [2022-11-02 20:47:37,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.77777777777777) internal successors, (1609), 9 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states 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 20:47:37,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states 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 20:47:37,638 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states 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 20:47:37,639 INFO L175 Difference]: Start difference. First operand has 196 places, 190 transitions, 386 flow. Second operand 9 states and 1609 transitions. [2022-11-02 20:47:37,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 211 transitions, 547 flow [2022-11-02 20:47:37,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:47:37,648 INFO L231 Difference]: Finished difference. Result has 200 places, 191 transitions, 418 flow [2022-11-02 20:47:37,648 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=418, PETRI_PLACES=200, PETRI_TRANSITIONS=191} [2022-11-02 20:47:37,649 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, -1 predicate places. [2022-11-02 20:47:37,650 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 191 transitions, 418 flow [2022-11-02 20:47:37,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states 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 20:47:37,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:37,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:37,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:47:37,652 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:37,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:37,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1559305920, now seen corresponding path program 1 times [2022-11-02 20:47:37,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:37,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115096102] [2022-11-02 20:47:37,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:37,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:38,013 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 20:47:38,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:38,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115096102] [2022-11-02 20:47:38,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115096102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:38,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:38,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:47:38,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668910172] [2022-11-02 20:47:38,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:38,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:47:38,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:38,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:47:38,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:47:38,017 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 223 [2022-11-02 20:47:38,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 191 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 20:47:38,019 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:38,019 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 223 [2022-11-02 20:47:38,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:38,231 INFO L130 PetriNetUnfolder]: 92/516 cut-off events. [2022-11-02 20:47:38,231 INFO L131 PetriNetUnfolder]: For 87/111 co-relation queries the response was YES. [2022-11-02 20:47:38,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 516 events. 92/516 cut-off events. For 87/111 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1808 event pairs, 50 based on Foata normal form. 13/481 useless extension candidates. Maximal degree in co-relation 812. Up to 115 conditions per place. [2022-11-02 20:47:38,236 INFO L137 encePairwiseOnDemand]: 214/223 looper letters, 36 selfloop transitions, 6 changer transitions 8/203 dead transitions. [2022-11-02 20:47:38,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 203 transitions, 552 flow [2022-11-02 20:47:38,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:47:38,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:47:38,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1255 transitions. [2022-11-02 20:47:38,241 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8039718129404229 [2022-11-02 20:47:38,241 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1255 transitions. [2022-11-02 20:47:38,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1255 transitions. [2022-11-02 20:47:38,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:38,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1255 transitions. [2022-11-02 20:47:38,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.28571428571428) internal successors, (1255), 7 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 20:47:38,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 20:47:38,250 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 20:47:38,251 INFO L175 Difference]: Start difference. First operand has 200 places, 191 transitions, 418 flow. Second operand 7 states and 1255 transitions. [2022-11-02 20:47:38,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 203 transitions, 552 flow [2022-11-02 20:47:38,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 203 transitions, 538 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:47:38,258 INFO L231 Difference]: Finished difference. Result has 201 places, 192 transitions, 428 flow [2022-11-02 20:47:38,259 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2022-11-02 20:47:38,261 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 0 predicate places. [2022-11-02 20:47:38,262 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 428 flow [2022-11-02 20:47:38,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states 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 20:47:38,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:38,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:38,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:47:38,264 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:38,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:38,265 INFO L85 PathProgramCache]: Analyzing trace with hash 840252989, now seen corresponding path program 1 times [2022-11-02 20:47:38,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:38,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600503236] [2022-11-02 20:47:38,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:38,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:38,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:38,758 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 20:47:38,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:38,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600503236] [2022-11-02 20:47:38,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600503236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:38,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:38,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:38,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282419929] [2022-11-02 20:47:38,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:38,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:38,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:38,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:38,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:38,767 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 223 [2022-11-02 20:47:38,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:38,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:38,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 223 [2022-11-02 20:47:38,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:38,878 INFO L130 PetriNetUnfolder]: 79/421 cut-off events. [2022-11-02 20:47:38,878 INFO L131 PetriNetUnfolder]: For 86/96 co-relation queries the response was YES. [2022-11-02 20:47:38,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 421 events. 79/421 cut-off events. For 86/96 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1204 event pairs, 23 based on Foata normal form. 6/405 useless extension candidates. Maximal degree in co-relation 657. Up to 79 conditions per place. [2022-11-02 20:47:38,883 INFO L137 encePairwiseOnDemand]: 218/223 looper letters, 20 selfloop transitions, 4 changer transitions 0/198 dead transitions. [2022-11-02 20:47:38,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 198 transitions, 498 flow [2022-11-02 20:47:38,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:47:38,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 598 transitions. [2022-11-02 20:47:38,885 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8938714499252616 [2022-11-02 20:47:38,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 598 transitions. [2022-11-02 20:47:38,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 598 transitions. [2022-11-02 20:47:38,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:38,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 598 transitions. [2022-11-02 20:47:38,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 0 states have call successors, (0), 0 states 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 20:47:38,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 20:47:38,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 20:47:38,895 INFO L175 Difference]: Start difference. First operand has 201 places, 192 transitions, 428 flow. Second operand 3 states and 598 transitions. [2022-11-02 20:47:38,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 198 transitions, 498 flow [2022-11-02 20:47:38,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 198 transitions, 488 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:47:38,901 INFO L231 Difference]: Finished difference. Result has 199 places, 193 transitions, 438 flow [2022-11-02 20:47:38,907 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=438, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2022-11-02 20:47:38,908 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, -2 predicate places. [2022-11-02 20:47:38,909 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 438 flow [2022-11-02 20:47:38,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:47:38,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:38,910 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:38,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:47:38,910 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:38,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:38,910 INFO L85 PathProgramCache]: Analyzing trace with hash 183471921, now seen corresponding path program 2 times [2022-11-02 20:47:38,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:38,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606744160] [2022-11-02 20:47:38,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:38,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:39,333 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 20:47:39,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:39,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606744160] [2022-11-02 20:47:39,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606744160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:39,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:39,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:47:39,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436399610] [2022-11-02 20:47:39,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:39,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:47:39,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:47:39,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:47:39,337 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 223 [2022-11-02 20:47:39,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 438 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 20:47:39,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:39,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 223 [2022-11-02 20:47:39,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:39,423 INFO L130 PetriNetUnfolder]: 58/373 cut-off events. [2022-11-02 20:47:39,423 INFO L131 PetriNetUnfolder]: For 91/105 co-relation queries the response was YES. [2022-11-02 20:47:39,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 373 events. 58/373 cut-off events. For 91/105 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 885 event pairs, 9 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 593. Up to 91 conditions per place. [2022-11-02 20:47:39,426 INFO L137 encePairwiseOnDemand]: 219/223 looper letters, 17 selfloop transitions, 3 changer transitions 0/197 dead transitions. [2022-11-02 20:47:39,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 197 transitions, 492 flow [2022-11-02 20:47:39,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:47:39,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:47:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2022-11-02 20:47:39,429 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8998505231689088 [2022-11-02 20:47:39,430 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2022-11-02 20:47:39,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2022-11-02 20:47:39,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:39,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2022-11-02 20:47:39,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states 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 20:47:39,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 20:47:39,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states 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 20:47:39,434 INFO L175 Difference]: Start difference. First operand has 199 places, 193 transitions, 438 flow. Second operand 3 states and 602 transitions. [2022-11-02 20:47:39,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 197 transitions, 492 flow [2022-11-02 20:47:39,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 197 transitions, 482 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-02 20:47:39,440 INFO L231 Difference]: Finished difference. Result has 200 places, 195 transitions, 451 flow [2022-11-02 20:47:39,440 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=451, PETRI_PLACES=200, PETRI_TRANSITIONS=195} [2022-11-02 20:47:39,442 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, -1 predicate places. [2022-11-02 20:47:39,443 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 195 transitions, 451 flow [2022-11-02 20:47:39,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states 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 20:47:39,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:39,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:39,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:47:39,444 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:39,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash -2134133453, now seen corresponding path program 3 times [2022-11-02 20:47:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:39,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442203900] [2022-11-02 20:47:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:41,633 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 20:47:41,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:41,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442203900] [2022-11-02 20:47:41,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442203900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:41,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:41,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:47:41,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2260054] [2022-11-02 20:47:41,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:41,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:47:41,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:41,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:41,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:47:41,638 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:47:41,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 195 transitions, 451 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:41,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:41,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:47:41,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:43,024 INFO L130 PetriNetUnfolder]: 865/2144 cut-off events. [2022-11-02 20:47:43,024 INFO L131 PetriNetUnfolder]: For 745/769 co-relation queries the response was YES. [2022-11-02 20:47:43,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4307 conditions, 2144 events. 865/2144 cut-off events. For 745/769 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14619 event pairs, 163 based on Foata normal form. 1/1972 useless extension candidates. Maximal degree in co-relation 4298. Up to 974 conditions per place. [2022-11-02 20:47:43,071 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 122 selfloop transitions, 39 changer transitions 5/301 dead transitions. [2022-11-02 20:47:43,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 301 transitions, 1098 flow [2022-11-02 20:47:43,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:47:43,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:47:43,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2022-11-02 20:47:43,079 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6919282511210763 [2022-11-02 20:47:43,079 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2022-11-02 20:47:43,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2022-11-02 20:47:43,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:43,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2022-11-02 20:47:43,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states 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 20:47:43,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:47:43,097 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:47:43,097 INFO L175 Difference]: Start difference. First operand has 200 places, 195 transitions, 451 flow. Second operand 20 states and 3086 transitions. [2022-11-02 20:47:43,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 301 transitions, 1098 flow [2022-11-02 20:47:43,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 301 transitions, 1088 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-02 20:47:43,104 INFO L231 Difference]: Finished difference. Result has 228 places, 230 transitions, 663 flow [2022-11-02 20:47:43,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=663, PETRI_PLACES=228, PETRI_TRANSITIONS=230} [2022-11-02 20:47:43,106 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 27 predicate places. [2022-11-02 20:47:43,106 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 230 transitions, 663 flow [2022-11-02 20:47:43,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:43,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:43,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:43,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:47:43,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:43,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:43,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1705051047, now seen corresponding path program 4 times [2022-11-02 20:47:43,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:43,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337781780] [2022-11-02 20:47:43,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:43,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:44,974 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 20:47:44,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:44,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337781780] [2022-11-02 20:47:44,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337781780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:44,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:44,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:47:44,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318305424] [2022-11-02 20:47:44,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:44,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:47:44,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:44,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:44,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:47:44,993 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:47:44,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 230 transitions, 663 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:44,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:44,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:47:44,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:46,317 INFO L130 PetriNetUnfolder]: 933/2203 cut-off events. [2022-11-02 20:47:46,317 INFO L131 PetriNetUnfolder]: For 1677/1687 co-relation queries the response was YES. [2022-11-02 20:47:46,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5506 conditions, 2203 events. 933/2203 cut-off events. For 1677/1687 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14448 event pairs, 402 based on Foata normal form. 1/2119 useless extension candidates. Maximal degree in co-relation 5487. Up to 1170 conditions per place. [2022-11-02 20:47:46,342 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 124 selfloop transitions, 46 changer transitions 5/310 dead transitions. [2022-11-02 20:47:46,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 310 transitions, 1371 flow [2022-11-02 20:47:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:47:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:47:46,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2782 transitions. [2022-11-02 20:47:46,350 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.693074240159442 [2022-11-02 20:47:46,351 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2782 transitions. [2022-11-02 20:47:46,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2782 transitions. [2022-11-02 20:47:46,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:46,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2782 transitions. [2022-11-02 20:47:46,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.55555555555554) internal successors, (2782), 18 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states 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 20:47:46,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:47:46,369 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:47:46,370 INFO L175 Difference]: Start difference. First operand has 228 places, 230 transitions, 663 flow. Second operand 18 states and 2782 transitions. [2022-11-02 20:47:46,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 310 transitions, 1371 flow [2022-11-02 20:47:46,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 310 transitions, 1353 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-02 20:47:46,386 INFO L231 Difference]: Finished difference. Result has 246 places, 251 transitions, 932 flow [2022-11-02 20:47:46,386 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=932, PETRI_PLACES=246, PETRI_TRANSITIONS=251} [2022-11-02 20:47:46,387 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 45 predicate places. [2022-11-02 20:47:46,387 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 251 transitions, 932 flow [2022-11-02 20:47:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:46,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:46,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:46,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:47:46,389 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:46,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:46,390 INFO L85 PathProgramCache]: Analyzing trace with hash 225193089, now seen corresponding path program 5 times [2022-11-02 20:47:46,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:46,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488844095] [2022-11-02 20:47:46,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:46,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:48,156 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 20:47:48,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:48,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488844095] [2022-11-02 20:47:48,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488844095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:48,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:48,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:47:48,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616417741] [2022-11-02 20:47:48,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:48,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:47:48,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:48,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:47:48,161 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:47:48,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 251 transitions, 932 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:48,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:48,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:47:48,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:49,637 INFO L130 PetriNetUnfolder]: 978/2378 cut-off events. [2022-11-02 20:47:49,638 INFO L131 PetriNetUnfolder]: For 3549/3564 co-relation queries the response was YES. [2022-11-02 20:47:49,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6684 conditions, 2378 events. 978/2378 cut-off events. For 3549/3564 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 16406 event pairs, 277 based on Foata normal form. 5/2287 useless extension candidates. Maximal degree in co-relation 6657. Up to 1175 conditions per place. [2022-11-02 20:47:49,666 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 140 selfloop transitions, 49 changer transitions 5/329 dead transitions. [2022-11-02 20:47:49,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 329 transitions, 1759 flow [2022-11-02 20:47:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:47:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:47:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2022-11-02 20:47:49,674 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6919282511210763 [2022-11-02 20:47:49,675 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2022-11-02 20:47:49,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2022-11-02 20:47:49,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:49,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2022-11-02 20:47:49,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states 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 20:47:49,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:47:49,708 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:47:49,709 INFO L175 Difference]: Start difference. First operand has 246 places, 251 transitions, 932 flow. Second operand 20 states and 3086 transitions. [2022-11-02 20:47:49,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 329 transitions, 1759 flow [2022-11-02 20:47:49,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 329 transitions, 1688 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-11-02 20:47:49,730 INFO L231 Difference]: Finished difference. Result has 260 places, 259 transitions, 1050 flow [2022-11-02 20:47:49,731 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1050, PETRI_PLACES=260, PETRI_TRANSITIONS=259} [2022-11-02 20:47:49,733 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 59 predicate places. [2022-11-02 20:47:49,733 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 259 transitions, 1050 flow [2022-11-02 20:47:49,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:49,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:49,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:49,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:47:49,735 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:49,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:49,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1356739333, now seen corresponding path program 6 times [2022-11-02 20:47:49,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:49,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976433520] [2022-11-02 20:47:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:49,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:51,540 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 20:47:51,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:51,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976433520] [2022-11-02 20:47:51,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976433520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:51,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:51,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:47:51,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575152695] [2022-11-02 20:47:51,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:51,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:47:51,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:51,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:51,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:47:51,546 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:47:51,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 259 transitions, 1050 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:51,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:51,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:47:51,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:53,391 INFO L130 PetriNetUnfolder]: 1091/2642 cut-off events. [2022-11-02 20:47:53,391 INFO L131 PetriNetUnfolder]: For 5948/5960 co-relation queries the response was YES. [2022-11-02 20:47:53,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 2642 events. 1091/2642 cut-off events. For 5948/5960 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 18805 event pairs, 437 based on Foata normal form. 4/2551 useless extension candidates. Maximal degree in co-relation 7929. Up to 1218 conditions per place. [2022-11-02 20:47:53,436 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 149 selfloop transitions, 55 changer transitions 5/344 dead transitions. [2022-11-02 20:47:53,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 344 transitions, 2010 flow [2022-11-02 20:47:53,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:47:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:47:53,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3091 transitions. [2022-11-02 20:47:53,445 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6930493273542601 [2022-11-02 20:47:53,445 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3091 transitions. [2022-11-02 20:47:53,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3091 transitions. [2022-11-02 20:47:53,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:53,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3091 transitions. [2022-11-02 20:47:53,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.55) internal successors, (3091), 20 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states 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 20:47:53,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:47:53,466 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:47:53,466 INFO L175 Difference]: Start difference. First operand has 260 places, 259 transitions, 1050 flow. Second operand 20 states and 3091 transitions. [2022-11-02 20:47:53,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 344 transitions, 2010 flow [2022-11-02 20:47:53,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 344 transitions, 1882 flow, removed 28 selfloop flow, removed 14 redundant places. [2022-11-02 20:47:53,566 INFO L231 Difference]: Finished difference. Result has 269 places, 270 transitions, 1177 flow [2022-11-02 20:47:53,567 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1177, PETRI_PLACES=269, PETRI_TRANSITIONS=270} [2022-11-02 20:47:53,568 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 68 predicate places. [2022-11-02 20:47:53,568 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 270 transitions, 1177 flow [2022-11-02 20:47:53,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:53,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:53,569 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:53,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:47:53,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:53,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:53,570 INFO L85 PathProgramCache]: Analyzing trace with hash 129091073, now seen corresponding path program 7 times [2022-11-02 20:47:53,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:53,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742420835] [2022-11-02 20:47:53,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:53,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:55,420 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 20:47:55,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:55,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742420835] [2022-11-02 20:47:55,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742420835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:55,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:55,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:47:55,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134764980] [2022-11-02 20:47:55,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:55,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:47:55,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:55,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:55,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:47:55,426 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:47:55,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 270 transitions, 1177 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:55,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:55,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:47:55,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:47:57,294 INFO L130 PetriNetUnfolder]: 1141/2844 cut-off events. [2022-11-02 20:47:57,294 INFO L131 PetriNetUnfolder]: For 7555/7569 co-relation queries the response was YES. [2022-11-02 20:47:57,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 2844 events. 1141/2844 cut-off events. For 7555/7569 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 21206 event pairs, 353 based on Foata normal form. 11/2738 useless extension candidates. Maximal degree in co-relation 8828. Up to 1446 conditions per place. [2022-11-02 20:47:57,333 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 153 selfloop transitions, 52 changer transitions 5/345 dead transitions. [2022-11-02 20:47:57,333 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 345 transitions, 2115 flow [2022-11-02 20:47:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:47:57,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:47:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3084 transitions. [2022-11-02 20:47:57,338 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6914798206278027 [2022-11-02 20:47:57,339 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3084 transitions. [2022-11-02 20:47:57,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3084 transitions. [2022-11-02 20:47:57,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:47:57,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3084 transitions. [2022-11-02 20:47:57,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.2) internal successors, (3084), 20 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states 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 20:47:57,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:47:57,356 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:47:57,356 INFO L175 Difference]: Start difference. First operand has 269 places, 270 transitions, 1177 flow. Second operand 20 states and 3084 transitions. [2022-11-02 20:47:57,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 345 transitions, 2115 flow [2022-11-02 20:47:57,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 345 transitions, 1975 flow, removed 36 selfloop flow, removed 13 redundant places. [2022-11-02 20:47:57,408 INFO L231 Difference]: Finished difference. Result has 278 places, 279 transitions, 1275 flow [2022-11-02 20:47:57,410 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1275, PETRI_PLACES=278, PETRI_TRANSITIONS=279} [2022-11-02 20:47:57,411 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 77 predicate places. [2022-11-02 20:47:57,411 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 279 transitions, 1275 flow [2022-11-02 20:47:57,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:57,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:47:57,413 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:47:57,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:47:57,413 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:47:57,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:47:57,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1971346287, now seen corresponding path program 8 times [2022-11-02 20:47:57,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:47:57,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330691517] [2022-11-02 20:47:57,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:47:57,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:47:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:47:59,075 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 20:47:59,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:47:59,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330691517] [2022-11-02 20:47:59,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330691517] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:47:59,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:47:59,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:47:59,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355690531] [2022-11-02 20:47:59,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:47:59,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:47:59,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:47:59,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:47:59,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:47:59,080 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:47:59,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 279 transitions, 1275 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:47:59,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:47:59,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:47:59,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:00,809 INFO L130 PetriNetUnfolder]: 1156/2815 cut-off events. [2022-11-02 20:48:00,809 INFO L131 PetriNetUnfolder]: For 8836/8845 co-relation queries the response was YES. [2022-11-02 20:48:00,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9217 conditions, 2815 events. 1156/2815 cut-off events. For 8836/8845 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 20680 event pairs, 508 based on Foata normal form. 7/2712 useless extension candidates. Maximal degree in co-relation 9177. Up to 1532 conditions per place. [2022-11-02 20:48:00,856 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 156 selfloop transitions, 50 changer transitions 5/346 dead transitions. [2022-11-02 20:48:00,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 346 transitions, 2185 flow [2022-11-02 20:48:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:48:00,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:48:00,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2926 transitions. [2022-11-02 20:48:00,863 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6905829596412556 [2022-11-02 20:48:00,864 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2926 transitions. [2022-11-02 20:48:00,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2926 transitions. [2022-11-02 20:48:00,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:00,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2926 transitions. [2022-11-02 20:48:00,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.0) internal successors, (2926), 19 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states 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 20:48:00,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:48:00,884 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:48:00,884 INFO L175 Difference]: Start difference. First operand has 278 places, 279 transitions, 1275 flow. Second operand 19 states and 2926 transitions. [2022-11-02 20:48:00,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 346 transitions, 2185 flow [2022-11-02 20:48:00,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 346 transitions, 2053 flow, removed 29 selfloop flow, removed 15 redundant places. [2022-11-02 20:48:00,946 INFO L231 Difference]: Finished difference. Result has 283 places, 286 transitions, 1324 flow [2022-11-02 20:48:00,947 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1324, PETRI_PLACES=283, PETRI_TRANSITIONS=286} [2022-11-02 20:48:00,948 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 82 predicate places. [2022-11-02 20:48:00,948 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 286 transitions, 1324 flow [2022-11-02 20:48:00,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:00,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:00,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:00,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:48:00,950 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -662982443, now seen corresponding path program 9 times [2022-11-02 20:48:00,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:00,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570708086] [2022-11-02 20:48:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:00,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:01,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:02,719 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 20:48:02,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570708086] [2022-11-02 20:48:02,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570708086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:02,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:02,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395249082] [2022-11-02 20:48:02,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:02,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:02,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:02,724 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:02,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 286 transitions, 1324 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:02,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:02,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:02,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:04,169 INFO L130 PetriNetUnfolder]: 1222/2935 cut-off events. [2022-11-02 20:48:04,169 INFO L131 PetriNetUnfolder]: For 9635/9645 co-relation queries the response was YES. [2022-11-02 20:48:04,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9889 conditions, 2935 events. 1222/2935 cut-off events. For 9635/9645 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 21984 event pairs, 655 based on Foata normal form. 1/2814 useless extension candidates. Maximal degree in co-relation 9846. Up to 1672 conditions per place. [2022-11-02 20:48:04,206 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 166 selfloop transitions, 57 changer transitions 5/363 dead transitions. [2022-11-02 20:48:04,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 363 transitions, 2424 flow [2022-11-02 20:48:04,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:04,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:04,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2784 transitions. [2022-11-02 20:48:04,211 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6935724962630793 [2022-11-02 20:48:04,211 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2784 transitions. [2022-11-02 20:48:04,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2784 transitions. [2022-11-02 20:48:04,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:04,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2784 transitions. [2022-11-02 20:48:04,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.66666666666666) internal successors, (2784), 18 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 20:48:04,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:04,224 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:04,224 INFO L175 Difference]: Start difference. First operand has 283 places, 286 transitions, 1324 flow. Second operand 18 states and 2784 transitions. [2022-11-02 20:48:04,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 363 transitions, 2424 flow [2022-11-02 20:48:04,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 363 transitions, 2331 flow, removed 10 selfloop flow, removed 12 redundant places. [2022-11-02 20:48:04,268 INFO L231 Difference]: Finished difference. Result has 295 places, 311 transitions, 1758 flow [2022-11-02 20:48:04,269 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1758, PETRI_PLACES=295, PETRI_TRANSITIONS=311} [2022-11-02 20:48:04,269 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 94 predicate places. [2022-11-02 20:48:04,270 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 311 transitions, 1758 flow [2022-11-02 20:48:04,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:04,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:04,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:04,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:48:04,271 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:04,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:04,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1349343607, now seen corresponding path program 10 times [2022-11-02 20:48:04,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:04,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786453441] [2022-11-02 20:48:04,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:04,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:05,864 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 20:48:05,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:05,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786453441] [2022-11-02 20:48:05,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786453441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:05,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:05,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:05,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563312537] [2022-11-02 20:48:05,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:05,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:05,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:05,869 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:05,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 311 transitions, 1758 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:05,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:05,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:05,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:07,722 INFO L130 PetriNetUnfolder]: 1371/3450 cut-off events. [2022-11-02 20:48:07,722 INFO L131 PetriNetUnfolder]: For 16796/16811 co-relation queries the response was YES. [2022-11-02 20:48:07,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12276 conditions, 3450 events. 1371/3450 cut-off events. For 16796/16811 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 27827 event pairs, 506 based on Foata normal form. 5/3303 useless extension candidates. Maximal degree in co-relation 12225. Up to 1799 conditions per place. [2022-11-02 20:48:07,798 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 197 selfloop transitions, 56 changer transitions 5/393 dead transitions. [2022-11-02 20:48:07,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 393 transitions, 2965 flow [2022-11-02 20:48:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:48:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:48:07,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3090 transitions. [2022-11-02 20:48:07,804 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6928251121076233 [2022-11-02 20:48:07,805 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3090 transitions. [2022-11-02 20:48:07,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3090 transitions. [2022-11-02 20:48:07,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:07,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3090 transitions. [2022-11-02 20:48:07,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.5) internal successors, (3090), 20 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states 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 20:48:07,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:48:07,824 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:48:07,825 INFO L175 Difference]: Start difference. First operand has 295 places, 311 transitions, 1758 flow. Second operand 20 states and 3090 transitions. [2022-11-02 20:48:07,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 393 transitions, 2965 flow [2022-11-02 20:48:07,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 393 transitions, 2759 flow, removed 98 selfloop flow, removed 6 redundant places. [2022-11-02 20:48:07,921 INFO L231 Difference]: Finished difference. Result has 313 places, 325 transitions, 1898 flow [2022-11-02 20:48:07,922 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1898, PETRI_PLACES=313, PETRI_TRANSITIONS=325} [2022-11-02 20:48:07,923 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 112 predicate places. [2022-11-02 20:48:07,924 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 325 transitions, 1898 flow [2022-11-02 20:48:07,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:07,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:07,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:07,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:48:07,927 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:07,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:07,928 INFO L85 PathProgramCache]: Analyzing trace with hash -356952219, now seen corresponding path program 11 times [2022-11-02 20:48:07,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:07,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961337284] [2022-11-02 20:48:07,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:07,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:09,318 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 20:48:09,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:09,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961337284] [2022-11-02 20:48:09,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961337284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:09,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:09,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038987102] [2022-11-02 20:48:09,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:09,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:09,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:09,322 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:09,324 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 325 transitions, 1898 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:09,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:09,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:09,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:10,627 INFO L130 PetriNetUnfolder]: 1381/3475 cut-off events. [2022-11-02 20:48:10,628 INFO L131 PetriNetUnfolder]: For 18179/18201 co-relation queries the response was YES. [2022-11-02 20:48:10,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12605 conditions, 3475 events. 1381/3475 cut-off events. For 18179/18201 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 28219 event pairs, 555 based on Foata normal form. 14/3331 useless extension candidates. Maximal degree in co-relation 12549. Up to 1978 conditions per place. [2022-11-02 20:48:10,692 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 183 selfloop transitions, 51 changer transitions 5/374 dead transitions. [2022-11-02 20:48:10,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 374 transitions, 2825 flow [2022-11-02 20:48:10,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:10,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:10,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2765 transitions. [2022-11-02 20:48:10,697 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6888390632785252 [2022-11-02 20:48:10,697 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2765 transitions. [2022-11-02 20:48:10,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2765 transitions. [2022-11-02 20:48:10,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:10,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2765 transitions. [2022-11-02 20:48:10,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.61111111111111) internal successors, (2765), 18 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states 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 20:48:10,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:10,711 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:10,712 INFO L175 Difference]: Start difference. First operand has 313 places, 325 transitions, 1898 flow. Second operand 18 states and 2765 transitions. [2022-11-02 20:48:10,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 374 transitions, 2825 flow [2022-11-02 20:48:10,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 374 transitions, 2635 flow, removed 66 selfloop flow, removed 11 redundant places. [2022-11-02 20:48:10,791 INFO L231 Difference]: Finished difference. Result has 321 places, 333 transitions, 1953 flow [2022-11-02 20:48:10,791 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1953, PETRI_PLACES=321, PETRI_TRANSITIONS=333} [2022-11-02 20:48:10,792 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 120 predicate places. [2022-11-02 20:48:10,792 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 333 transitions, 1953 flow [2022-11-02 20:48:10,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:10,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:10,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:10,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:48:10,794 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1324562235, now seen corresponding path program 12 times [2022-11-02 20:48:10,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:10,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634874742] [2022-11-02 20:48:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:10,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:12,464 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 20:48:12,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:12,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634874742] [2022-11-02 20:48:12,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634874742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:12,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:12,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:12,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931019607] [2022-11-02 20:48:12,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:12,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:12,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:12,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:12,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:12,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:12,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 333 transitions, 1953 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:12,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:12,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:12,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:14,142 INFO L130 PetriNetUnfolder]: 1423/3606 cut-off events. [2022-11-02 20:48:14,142 INFO L131 PetriNetUnfolder]: For 20643/20665 co-relation queries the response was YES. [2022-11-02 20:48:14,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13184 conditions, 3606 events. 1423/3606 cut-off events. For 20643/20665 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29747 event pairs, 562 based on Foata normal form. 14/3463 useless extension candidates. Maximal degree in co-relation 13125. Up to 1993 conditions per place. [2022-11-02 20:48:14,196 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 196 selfloop transitions, 56 changer transitions 5/392 dead transitions. [2022-11-02 20:48:14,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 392 transitions, 3021 flow [2022-11-02 20:48:14,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:14,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:14,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2779 transitions. [2022-11-02 20:48:14,204 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.692326856003986 [2022-11-02 20:48:14,204 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2779 transitions. [2022-11-02 20:48:14,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2779 transitions. [2022-11-02 20:48:14,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:14,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2779 transitions. [2022-11-02 20:48:14,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.38888888888889) internal successors, (2779), 18 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states 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 20:48:14,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:14,221 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:14,221 INFO L175 Difference]: Start difference. First operand has 321 places, 333 transitions, 1953 flow. Second operand 18 states and 2779 transitions. [2022-11-02 20:48:14,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 392 transitions, 3021 flow [2022-11-02 20:48:14,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 392 transitions, 2876 flow, removed 41 selfloop flow, removed 11 redundant places. [2022-11-02 20:48:14,313 INFO L231 Difference]: Finished difference. Result has 330 places, 339 transitions, 2091 flow [2022-11-02 20:48:14,314 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1814, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2091, PETRI_PLACES=330, PETRI_TRANSITIONS=339} [2022-11-02 20:48:14,315 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 129 predicate places. [2022-11-02 20:48:14,315 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 339 transitions, 2091 flow [2022-11-02 20:48:14,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:14,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:14,317 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:14,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 20:48:14,318 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -980533449, now seen corresponding path program 13 times [2022-11-02 20:48:14,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561313242] [2022-11-02 20:48:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:14,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:14,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:15,994 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 20:48:15,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:15,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561313242] [2022-11-02 20:48:15,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561313242] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:15,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:15,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:15,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827206339] [2022-11-02 20:48:15,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:15,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:15,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:15,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:16,002 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:16,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 339 transitions, 2091 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:16,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:16,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:16,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:17,573 INFO L130 PetriNetUnfolder]: 1495/3700 cut-off events. [2022-11-02 20:48:17,573 INFO L131 PetriNetUnfolder]: For 27615/27623 co-relation queries the response was YES. [2022-11-02 20:48:17,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14421 conditions, 3700 events. 1495/3700 cut-off events. For 27615/27623 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 30289 event pairs, 759 based on Foata normal form. 1/3556 useless extension candidates. Maximal degree in co-relation 14358. Up to 2092 conditions per place. [2022-11-02 20:48:17,654 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 212 selfloop transitions, 61 changer transitions 5/413 dead transitions. [2022-11-02 20:48:17,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 413 transitions, 3374 flow [2022-11-02 20:48:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:48:17,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:48:17,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3085 transitions. [2022-11-02 20:48:17,663 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6917040358744395 [2022-11-02 20:48:17,663 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3085 transitions. [2022-11-02 20:48:17,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3085 transitions. [2022-11-02 20:48:17,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:17,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3085 transitions. [2022-11-02 20:48:17,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.25) internal successors, (3085), 20 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states 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 20:48:17,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:48:17,679 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:48:17,681 INFO L175 Difference]: Start difference. First operand has 330 places, 339 transitions, 2091 flow. Second operand 20 states and 3085 transitions. [2022-11-02 20:48:17,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 413 transitions, 3374 flow [2022-11-02 20:48:17,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 413 transitions, 3179 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-11-02 20:48:17,813 INFO L231 Difference]: Finished difference. Result has 342 places, 351 transitions, 2244 flow [2022-11-02 20:48:17,815 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2244, PETRI_PLACES=342, PETRI_TRANSITIONS=351} [2022-11-02 20:48:17,815 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 141 predicate places. [2022-11-02 20:48:17,816 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 351 transitions, 2244 flow [2022-11-02 20:48:17,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:17,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:17,817 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:17,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 20:48:17,818 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:17,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:17,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1833039991, now seen corresponding path program 14 times [2022-11-02 20:48:17,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:17,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753012390] [2022-11-02 20:48:17,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:17,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:19,257 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 20:48:19,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:19,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753012390] [2022-11-02 20:48:19,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753012390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:19,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:19,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:19,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758516379] [2022-11-02 20:48:19,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:19,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:19,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:19,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:19,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:19,263 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:19,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 351 transitions, 2244 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:19,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:19,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:19,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:21,102 INFO L130 PetriNetUnfolder]: 1551/3850 cut-off events. [2022-11-02 20:48:21,103 INFO L131 PetriNetUnfolder]: For 30927/30935 co-relation queries the response was YES. [2022-11-02 20:48:21,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15352 conditions, 3850 events. 1551/3850 cut-off events. For 30927/30935 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 31791 event pairs, 802 based on Foata normal form. 1/3694 useless extension candidates. Maximal degree in co-relation 15282. Up to 2192 conditions per place. [2022-11-02 20:48:21,160 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 217 selfloop transitions, 65 changer transitions 5/422 dead transitions. [2022-11-02 20:48:21,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 422 transitions, 3573 flow [2022-11-02 20:48:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:48:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:48:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3085 transitions. [2022-11-02 20:48:21,167 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6917040358744395 [2022-11-02 20:48:21,167 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3085 transitions. [2022-11-02 20:48:21,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3085 transitions. [2022-11-02 20:48:21,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:21,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3085 transitions. [2022-11-02 20:48:21,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.25) internal successors, (3085), 20 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states 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 20:48:21,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:48:21,184 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:48:21,184 INFO L175 Difference]: Start difference. First operand has 342 places, 351 transitions, 2244 flow. Second operand 20 states and 3085 transitions. [2022-11-02 20:48:21,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 422 transitions, 3573 flow [2022-11-02 20:48:21,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 422 transitions, 3355 flow, removed 65 selfloop flow, removed 13 redundant places. [2022-11-02 20:48:21,333 INFO L231 Difference]: Finished difference. Result has 351 places, 363 transitions, 2413 flow [2022-11-02 20:48:21,334 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2045, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2413, PETRI_PLACES=351, PETRI_TRANSITIONS=363} [2022-11-02 20:48:21,335 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 150 predicate places. [2022-11-02 20:48:21,335 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 363 transitions, 2413 flow [2022-11-02 20:48:21,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:21,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:21,336 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:21,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 20:48:21,337 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:21,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1963001539, now seen corresponding path program 15 times [2022-11-02 20:48:21,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:21,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930301435] [2022-11-02 20:48:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:21,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:22,654 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 20:48:22,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:22,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930301435] [2022-11-02 20:48:22,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930301435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:22,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:22,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:22,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897853759] [2022-11-02 20:48:22,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:22,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:22,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:22,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:22,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:22,658 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:22,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 363 transitions, 2413 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:22,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:22,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:22,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:24,407 INFO L130 PetriNetUnfolder]: 1602/4070 cut-off events. [2022-11-02 20:48:24,408 INFO L131 PetriNetUnfolder]: For 36756/36778 co-relation queries the response was YES. [2022-11-02 20:48:24,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16433 conditions, 4070 events. 1602/4070 cut-off events. For 36756/36778 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 34943 event pairs, 615 based on Foata normal form. 14/3917 useless extension candidates. Maximal degree in co-relation 16359. Up to 2286 conditions per place. [2022-11-02 20:48:24,482 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 231 selfloop transitions, 63 changer transitions 5/434 dead transitions. [2022-11-02 20:48:24,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 434 transitions, 3819 flow [2022-11-02 20:48:24,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 20:48:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 20:48:24,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3089 transitions. [2022-11-02 20:48:24,489 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6926008968609866 [2022-11-02 20:48:24,489 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3089 transitions. [2022-11-02 20:48:24,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3089 transitions. [2022-11-02 20:48:24,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:24,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3089 transitions. [2022-11-02 20:48:24,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.45) internal successors, (3089), 20 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states 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 20:48:24,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:48:24,504 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states 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 20:48:24,504 INFO L175 Difference]: Start difference. First operand has 351 places, 363 transitions, 2413 flow. Second operand 20 states and 3089 transitions. [2022-11-02 20:48:24,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 434 transitions, 3819 flow [2022-11-02 20:48:24,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 434 transitions, 3584 flow, removed 71 selfloop flow, removed 14 redundant places. [2022-11-02 20:48:24,659 INFO L231 Difference]: Finished difference. Result has 359 places, 370 transitions, 2514 flow [2022-11-02 20:48:24,660 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2514, PETRI_PLACES=359, PETRI_TRANSITIONS=370} [2022-11-02 20:48:24,660 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 158 predicate places. [2022-11-02 20:48:24,660 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 370 transitions, 2514 flow [2022-11-02 20:48:24,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:24,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:24,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:24,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 20:48:24,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash 926586627, now seen corresponding path program 16 times [2022-11-02 20:48:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:24,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493737879] [2022-11-02 20:48:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:25,961 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 20:48:25,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:25,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493737879] [2022-11-02 20:48:25,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493737879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:25,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:25,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:25,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162242389] [2022-11-02 20:48:25,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:25,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:25,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:25,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:25,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:25,966 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:25,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 370 transitions, 2514 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:25,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:25,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:25,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:27,475 INFO L130 PetriNetUnfolder]: 1629/4112 cut-off events. [2022-11-02 20:48:27,475 INFO L131 PetriNetUnfolder]: For 39969/39977 co-relation queries the response was YES. [2022-11-02 20:48:27,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16985 conditions, 4112 events. 1629/4112 cut-off events. For 39969/39977 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 35028 event pairs, 707 based on Foata normal form. 5/3936 useless extension candidates. Maximal degree in co-relation 16907. Up to 2358 conditions per place. [2022-11-02 20:48:27,537 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 228 selfloop transitions, 67 changer transitions 5/435 dead transitions. [2022-11-02 20:48:27,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 435 transitions, 3903 flow [2022-11-02 20:48:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:48:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:48:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2931 transitions. [2022-11-02 20:48:27,543 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6917630398867123 [2022-11-02 20:48:27,543 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2931 transitions. [2022-11-02 20:48:27,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2931 transitions. [2022-11-02 20:48:27,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:27,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2931 transitions. [2022-11-02 20:48:27,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.26315789473685) internal successors, (2931), 19 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states 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 20:48:27,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:48:27,555 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:48:27,555 INFO L175 Difference]: Start difference. First operand has 359 places, 370 transitions, 2514 flow. Second operand 19 states and 2931 transitions. [2022-11-02 20:48:27,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 435 transitions, 3903 flow [2022-11-02 20:48:27,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 435 transitions, 3629 flow, removed 87 selfloop flow, removed 15 redundant places. [2022-11-02 20:48:27,737 INFO L231 Difference]: Finished difference. Result has 364 places, 380 transitions, 2595 flow [2022-11-02 20:48:27,738 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2293, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2595, PETRI_PLACES=364, PETRI_TRANSITIONS=380} [2022-11-02 20:48:27,739 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 163 predicate places. [2022-11-02 20:48:27,739 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 380 transitions, 2595 flow [2022-11-02 20:48:27,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:27,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:27,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:27,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 20:48:27,740 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:27,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:27,741 INFO L85 PathProgramCache]: Analyzing trace with hash -109588419, now seen corresponding path program 17 times [2022-11-02 20:48:27,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:27,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176841948] [2022-11-02 20:48:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:27,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:28,884 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 20:48:28,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:28,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176841948] [2022-11-02 20:48:28,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176841948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:28,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:28,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:28,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41584462] [2022-11-02 20:48:28,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:28,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:28,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:28,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:28,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:28,889 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:28,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 380 transitions, 2595 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:28,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:28,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:28,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:30,194 INFO L130 PetriNetUnfolder]: 1635/4080 cut-off events. [2022-11-02 20:48:30,194 INFO L131 PetriNetUnfolder]: For 36971/36975 co-relation queries the response was YES. [2022-11-02 20:48:30,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16908 conditions, 4080 events. 1635/4080 cut-off events. For 36971/36975 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 34426 event pairs, 877 based on Foata normal form. 2/3912 useless extension candidates. Maximal degree in co-relation 16827. Up to 2372 conditions per place. [2022-11-02 20:48:30,243 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 227 selfloop transitions, 58 changer transitions 5/425 dead transitions. [2022-11-02 20:48:30,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 425 transitions, 3679 flow [2022-11-02 20:48:30,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:30,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:30,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2767 transitions. [2022-11-02 20:48:30,248 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6893373193821625 [2022-11-02 20:48:30,248 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2767 transitions. [2022-11-02 20:48:30,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2767 transitions. [2022-11-02 20:48:30,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:30,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2767 transitions. [2022-11-02 20:48:30,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.72222222222223) internal successors, (2767), 18 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states 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 20:48:30,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:30,259 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:30,259 INFO L175 Difference]: Start difference. First operand has 364 places, 380 transitions, 2595 flow. Second operand 18 states and 2767 transitions. [2022-11-02 20:48:30,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 425 transitions, 3679 flow [2022-11-02 20:48:30,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 425 transitions, 3537 flow, removed 27 selfloop flow, removed 12 redundant places. [2022-11-02 20:48:30,388 INFO L231 Difference]: Finished difference. Result has 371 places, 383 transitions, 2638 flow [2022-11-02 20:48:30,388 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2456, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2638, PETRI_PLACES=371, PETRI_TRANSITIONS=383} [2022-11-02 20:48:30,389 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 170 predicate places. [2022-11-02 20:48:30,389 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 383 transitions, 2638 flow [2022-11-02 20:48:30,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:30,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:30,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:30,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 20:48:30,391 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:30,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:30,391 INFO L85 PathProgramCache]: Analyzing trace with hash 650701453, now seen corresponding path program 18 times [2022-11-02 20:48:30,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:30,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575039131] [2022-11-02 20:48:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:30,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:31,757 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 20:48:31,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:31,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575039131] [2022-11-02 20:48:31,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575039131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:31,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:31,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:31,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357551363] [2022-11-02 20:48:31,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:31,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:31,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:31,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:31,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:31,761 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:31,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 383 transitions, 2638 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:31,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:31,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:31,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:33,499 INFO L130 PetriNetUnfolder]: 1686/4316 cut-off events. [2022-11-02 20:48:33,499 INFO L131 PetriNetUnfolder]: For 42189/42204 co-relation queries the response was YES. [2022-11-02 20:48:33,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17946 conditions, 4316 events. 1686/4316 cut-off events. For 42189/42204 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 37782 event pairs, 708 based on Foata normal form. 5/4131 useless extension candidates. Maximal degree in co-relation 17863. Up to 2387 conditions per place. [2022-11-02 20:48:33,569 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 240 selfloop transitions, 64 changer transitions 5/444 dead transitions. [2022-11-02 20:48:33,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 444 transitions, 4010 flow [2022-11-02 20:48:33,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:33,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:33,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2781 transitions. [2022-11-02 20:48:33,574 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6928251121076233 [2022-11-02 20:48:33,574 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2781 transitions. [2022-11-02 20:48:33,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2781 transitions. [2022-11-02 20:48:33,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:33,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2781 transitions. [2022-11-02 20:48:33,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.5) internal successors, (2781), 18 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states 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 20:48:33,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:33,586 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:33,587 INFO L175 Difference]: Start difference. First operand has 371 places, 383 transitions, 2638 flow. Second operand 18 states and 2781 transitions. [2022-11-02 20:48:33,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 444 transitions, 4010 flow [2022-11-02 20:48:33,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 444 transitions, 3884 flow, removed 19 selfloop flow, removed 14 redundant places. [2022-11-02 20:48:33,740 INFO L231 Difference]: Finished difference. Result has 377 places, 390 transitions, 2882 flow [2022-11-02 20:48:33,740 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2882, PETRI_PLACES=377, PETRI_TRANSITIONS=390} [2022-11-02 20:48:33,741 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 176 predicate places. [2022-11-02 20:48:33,741 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 390 transitions, 2882 flow [2022-11-02 20:48:33,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:33,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:33,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:33,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 20:48:33,742 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:33,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:33,742 INFO L85 PathProgramCache]: Analyzing trace with hash 190695463, now seen corresponding path program 19 times [2022-11-02 20:48:33,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:33,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139064234] [2022-11-02 20:48:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:33,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:35,033 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 20:48:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:35,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139064234] [2022-11-02 20:48:35,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139064234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:35,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:35,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:35,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474564898] [2022-11-02 20:48:35,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:35,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:35,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:35,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:35,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:35,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:35,040 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 390 transitions, 2882 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:35,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:35,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:35,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:36,621 INFO L130 PetriNetUnfolder]: 1694/4357 cut-off events. [2022-11-02 20:48:36,622 INFO L131 PetriNetUnfolder]: For 49292/49314 co-relation queries the response was YES. [2022-11-02 20:48:36,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18447 conditions, 4357 events. 1694/4357 cut-off events. For 49292/49314 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 38264 event pairs, 695 based on Foata normal form. 14/4182 useless extension candidates. Maximal degree in co-relation 18361. Up to 2438 conditions per place. [2022-11-02 20:48:36,717 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 236 selfloop transitions, 65 changer transitions 5/441 dead transitions. [2022-11-02 20:48:36,717 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 441 transitions, 4099 flow [2022-11-02 20:48:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:36,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:36,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2770 transitions. [2022-11-02 20:48:36,721 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6900847035376183 [2022-11-02 20:48:36,721 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2770 transitions. [2022-11-02 20:48:36,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2770 transitions. [2022-11-02 20:48:36,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:36,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2770 transitions. [2022-11-02 20:48:36,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.88888888888889) internal successors, (2770), 18 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states 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 20:48:36,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:36,732 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:36,732 INFO L175 Difference]: Start difference. First operand has 377 places, 390 transitions, 2882 flow. Second operand 18 states and 2770 transitions. [2022-11-02 20:48:36,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 441 transitions, 4099 flow [2022-11-02 20:48:36,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 441 transitions, 3891 flow, removed 74 selfloop flow, removed 12 redundant places. [2022-11-02 20:48:36,891 INFO L231 Difference]: Finished difference. Result has 385 places, 396 transitions, 2951 flow [2022-11-02 20:48:36,891 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2676, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2951, PETRI_PLACES=385, PETRI_TRANSITIONS=396} [2022-11-02 20:48:36,892 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 184 predicate places. [2022-11-02 20:48:36,892 INFO L495 AbstractCegarLoop]: Abstraction has has 385 places, 396 transitions, 2951 flow [2022-11-02 20:48:36,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:36,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:36,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:36,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 20:48:36,893 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:36,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1733916767, now seen corresponding path program 20 times [2022-11-02 20:48:36,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:36,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741778344] [2022-11-02 20:48:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:36,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:38,055 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 20:48:38,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:38,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741778344] [2022-11-02 20:48:38,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741778344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:38,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:38,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:38,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750339338] [2022-11-02 20:48:38,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:38,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:38,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:38,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:38,062 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:38,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 396 transitions, 2951 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:38,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:38,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:38,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:39,627 INFO L130 PetriNetUnfolder]: 1694/4364 cut-off events. [2022-11-02 20:48:39,627 INFO L131 PetriNetUnfolder]: For 48546/48567 co-relation queries the response was YES. [2022-11-02 20:48:39,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18431 conditions, 4364 events. 1694/4364 cut-off events. For 48546/48567 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 38329 event pairs, 707 based on Foata normal form. 11/4184 useless extension candidates. Maximal degree in co-relation 18341. Up to 2456 conditions per place. [2022-11-02 20:48:39,695 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 242 selfloop transitions, 63 changer transitions 5/445 dead transitions. [2022-11-02 20:48:39,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 445 transitions, 4153 flow [2022-11-02 20:48:39,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:39,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2772 transitions. [2022-11-02 20:48:39,699 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6905829596412556 [2022-11-02 20:48:39,700 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2772 transitions. [2022-11-02 20:48:39,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2772 transitions. [2022-11-02 20:48:39,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:39,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2772 transitions. [2022-11-02 20:48:39,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.0) internal successors, (2772), 18 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states 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 20:48:39,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:39,711 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:39,711 INFO L175 Difference]: Start difference. First operand has 385 places, 396 transitions, 2951 flow. Second operand 18 states and 2772 transitions. [2022-11-02 20:48:39,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 445 transitions, 4153 flow [2022-11-02 20:48:39,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 445 transitions, 3900 flow, removed 47 selfloop flow, removed 15 redundant places. [2022-11-02 20:48:39,917 INFO L231 Difference]: Finished difference. Result has 389 places, 400 transitions, 2920 flow [2022-11-02 20:48:39,917 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2703, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2920, PETRI_PLACES=389, PETRI_TRANSITIONS=400} [2022-11-02 20:48:39,918 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 188 predicate places. [2022-11-02 20:48:39,918 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 400 transitions, 2920 flow [2022-11-02 20:48:39,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:39,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:39,918 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:39,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 20:48:39,919 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:39,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:39,919 INFO L85 PathProgramCache]: Analyzing trace with hash -473141167, now seen corresponding path program 21 times [2022-11-02 20:48:39,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:39,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137775675] [2022-11-02 20:48:39,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:41,228 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 20:48:41,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:41,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137775675] [2022-11-02 20:48:41,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137775675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:41,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:41,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:41,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230723182] [2022-11-02 20:48:41,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:41,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:41,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:41,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:41,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:41,233 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:41,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 400 transitions, 2920 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:41,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:41,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:41,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:42,784 INFO L130 PetriNetUnfolder]: 1694/4243 cut-off events. [2022-11-02 20:48:42,784 INFO L131 PetriNetUnfolder]: For 48220/48228 co-relation queries the response was YES. [2022-11-02 20:48:42,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18076 conditions, 4243 events. 1694/4243 cut-off events. For 48220/48228 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 36417 event pairs, 902 based on Foata normal form. 1/4071 useless extension candidates. Maximal degree in co-relation 17985. Up to 2442 conditions per place. [2022-11-02 20:48:42,845 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 243 selfloop transitions, 63 changer transitions 5/446 dead transitions. [2022-11-02 20:48:42,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 446 transitions, 4093 flow [2022-11-02 20:48:42,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:42,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:42,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2768 transitions. [2022-11-02 20:48:42,850 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6895864474339811 [2022-11-02 20:48:42,850 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2768 transitions. [2022-11-02 20:48:42,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2768 transitions. [2022-11-02 20:48:42,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:42,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2768 transitions. [2022-11-02 20:48:42,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.77777777777777) internal successors, (2768), 18 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 20:48:42,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:42,861 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:42,861 INFO L175 Difference]: Start difference. First operand has 389 places, 400 transitions, 2920 flow. Second operand 18 states and 2768 transitions. [2022-11-02 20:48:42,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 446 transitions, 4093 flow [2022-11-02 20:48:43,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 446 transitions, 3905 flow, removed 33 selfloop flow, removed 15 redundant places. [2022-11-02 20:48:43,062 INFO L231 Difference]: Finished difference. Result has 393 places, 403 transitions, 2929 flow [2022-11-02 20:48:43,063 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2734, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2929, PETRI_PLACES=393, PETRI_TRANSITIONS=403} [2022-11-02 20:48:43,063 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 192 predicate places. [2022-11-02 20:48:43,063 INFO L495 AbstractCegarLoop]: Abstraction has has 393 places, 403 transitions, 2929 flow [2022-11-02 20:48:43,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:43,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:43,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:43,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 20:48:43,064 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:43,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:43,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1777393193, now seen corresponding path program 22 times [2022-11-02 20:48:43,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:43,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691147702] [2022-11-02 20:48:43,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:43,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:44,190 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 20:48:44,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:44,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691147702] [2022-11-02 20:48:44,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691147702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:44,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:44,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:44,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834260956] [2022-11-02 20:48:44,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:44,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:44,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:44,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:44,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:44,194 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:44,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 393 places, 403 transitions, 2929 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:44,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:44,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:44,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:45,765 INFO L130 PetriNetUnfolder]: 1706/4385 cut-off events. [2022-11-02 20:48:45,765 INFO L131 PetriNetUnfolder]: For 49444/49465 co-relation queries the response was YES. [2022-11-02 20:48:45,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18392 conditions, 4385 events. 1706/4385 cut-off events. For 49444/49465 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 38584 event pairs, 703 based on Foata normal form. 11/4202 useless extension candidates. Maximal degree in co-relation 18299. Up to 2454 conditions per place. [2022-11-02 20:48:45,830 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 249 selfloop transitions, 68 changer transitions 5/457 dead transitions. [2022-11-02 20:48:45,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 457 transitions, 4273 flow [2022-11-02 20:48:45,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:45,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2774 transitions. [2022-11-02 20:48:45,834 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6910812157448929 [2022-11-02 20:48:45,835 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2774 transitions. [2022-11-02 20:48:45,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2774 transitions. [2022-11-02 20:48:45,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:45,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2774 transitions. [2022-11-02 20:48:45,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.11111111111111) internal successors, (2774), 18 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states 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 20:48:45,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:45,845 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:45,845 INFO L175 Difference]: Start difference. First operand has 393 places, 403 transitions, 2929 flow. Second operand 18 states and 2774 transitions. [2022-11-02 20:48:45,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 457 transitions, 4273 flow [2022-11-02 20:48:46,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 457 transitions, 4087 flow, removed 30 selfloop flow, removed 15 redundant places. [2022-11-02 20:48:46,086 INFO L231 Difference]: Finished difference. Result has 398 places, 411 transitions, 3085 flow [2022-11-02 20:48:46,087 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3085, PETRI_PLACES=398, PETRI_TRANSITIONS=411} [2022-11-02 20:48:46,087 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 197 predicate places. [2022-11-02 20:48:46,087 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 411 transitions, 3085 flow [2022-11-02 20:48:46,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:46,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:46,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:46,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 20:48:46,088 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:46,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:46,089 INFO L85 PathProgramCache]: Analyzing trace with hash -149723567, now seen corresponding path program 23 times [2022-11-02 20:48:46,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:46,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914332101] [2022-11-02 20:48:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:46,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:47,251 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 20:48:47,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:47,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914332101] [2022-11-02 20:48:47,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914332101] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:47,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:47,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:47,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852436026] [2022-11-02 20:48:47,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:47,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:47,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:47,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:47,255 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:47,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 411 transitions, 3085 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:47,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:47,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:47,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:48,900 INFO L130 PetriNetUnfolder]: 1754/4528 cut-off events. [2022-11-02 20:48:48,900 INFO L131 PetriNetUnfolder]: For 58154/58176 co-relation queries the response was YES. [2022-11-02 20:48:48,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19441 conditions, 4528 events. 1754/4528 cut-off events. For 58154/58176 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 40277 event pairs, 661 based on Foata normal form. 14/4349 useless extension candidates. Maximal degree in co-relation 19345. Up to 2402 conditions per place. [2022-11-02 20:48:48,965 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 259 selfloop transitions, 79 changer transitions 5/478 dead transitions. [2022-11-02 20:48:48,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 478 transitions, 4721 flow [2022-11-02 20:48:48,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:48:48,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:48:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2022-11-02 20:48:48,969 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2022-11-02 20:48:48,970 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2022-11-02 20:48:48,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2022-11-02 20:48:48,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:48,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2022-11-02 20:48:48,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states 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 20:48:48,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:48:48,979 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:48:48,979 INFO L175 Difference]: Start difference. First operand has 398 places, 411 transitions, 3085 flow. Second operand 19 states and 2930 transitions. [2022-11-02 20:48:48,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 478 transitions, 4721 flow [2022-11-02 20:48:49,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 478 transitions, 4471 flow, removed 63 selfloop flow, removed 14 redundant places. [2022-11-02 20:48:49,201 INFO L231 Difference]: Finished difference. Result has 407 places, 422 transitions, 3351 flow [2022-11-02 20:48:49,201 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2841, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3351, PETRI_PLACES=407, PETRI_TRANSITIONS=422} [2022-11-02 20:48:49,202 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 206 predicate places. [2022-11-02 20:48:49,202 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 422 transitions, 3351 flow [2022-11-02 20:48:49,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:49,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:49,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:49,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 20:48:49,203 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:49,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:49,204 INFO L85 PathProgramCache]: Analyzing trace with hash -213802831, now seen corresponding path program 24 times [2022-11-02 20:48:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:49,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019201243] [2022-11-02 20:48:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:49,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:50,153 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 20:48:50,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:50,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019201243] [2022-11-02 20:48:50,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019201243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:50,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:50,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:50,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978647498] [2022-11-02 20:48:50,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:50,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:50,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:50,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:50,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:50,157 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:50,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 422 transitions, 3351 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:50,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:50,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:50,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:51,659 INFO L130 PetriNetUnfolder]: 1764/4549 cut-off events. [2022-11-02 20:48:51,659 INFO L131 PetriNetUnfolder]: For 64730/64752 co-relation queries the response was YES. [2022-11-02 20:48:51,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19958 conditions, 4549 events. 1764/4549 cut-off events. For 64730/64752 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 40734 event pairs, 730 based on Foata normal form. 14/4363 useless extension candidates. Maximal degree in co-relation 19857. Up to 2562 conditions per place. [2022-11-02 20:48:51,749 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 264 selfloop transitions, 67 changer transitions 5/471 dead transitions. [2022-11-02 20:48:51,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 471 transitions, 4794 flow [2022-11-02 20:48:51,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:51,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2766 transitions. [2022-11-02 20:48:51,753 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6890881913303438 [2022-11-02 20:48:51,753 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2766 transitions. [2022-11-02 20:48:51,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2766 transitions. [2022-11-02 20:48:51,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:51,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2766 transitions. [2022-11-02 20:48:51,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.66666666666666) internal successors, (2766), 18 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states 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 20:48:51,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:51,762 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:51,763 INFO L175 Difference]: Start difference. First operand has 407 places, 422 transitions, 3351 flow. Second operand 18 states and 2766 transitions. [2022-11-02 20:48:51,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 471 transitions, 4794 flow [2022-11-02 20:48:52,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 471 transitions, 4485 flow, removed 106 selfloop flow, removed 13 redundant places. [2022-11-02 20:48:52,046 INFO L231 Difference]: Finished difference. Result has 413 places, 430 transitions, 3425 flow [2022-11-02 20:48:52,047 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3056, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3425, PETRI_PLACES=413, PETRI_TRANSITIONS=430} [2022-11-02 20:48:52,048 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 212 predicate places. [2022-11-02 20:48:52,048 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 430 transitions, 3425 flow [2022-11-02 20:48:52,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:52,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:52,049 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:52,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 20:48:52,049 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:52,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:52,050 INFO L85 PathProgramCache]: Analyzing trace with hash -788053637, now seen corresponding path program 25 times [2022-11-02 20:48:52,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:52,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409674236] [2022-11-02 20:48:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:52,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:53,051 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 20:48:53,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:53,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409674236] [2022-11-02 20:48:53,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409674236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:53,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:53,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:53,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070536501] [2022-11-02 20:48:53,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:53,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:53,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:53,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:53,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:53,055 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:53,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 430 transitions, 3425 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:53,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:53,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:53,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:54,858 INFO L130 PetriNetUnfolder]: 1814/4722 cut-off events. [2022-11-02 20:48:54,859 INFO L131 PetriNetUnfolder]: For 67262/67282 co-relation queries the response was YES. [2022-11-02 20:48:54,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20595 conditions, 4722 events. 1814/4722 cut-off events. For 67262/67282 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 42786 event pairs, 738 based on Foata normal form. 9/4520 useless extension candidates. Maximal degree in co-relation 20492. Up to 2556 conditions per place. [2022-11-02 20:48:54,940 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 279 selfloop transitions, 75 changer transitions 5/494 dead transitions. [2022-11-02 20:48:54,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 494 transitions, 5035 flow [2022-11-02 20:48:54,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:48:54,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:48:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2022-11-02 20:48:54,944 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2022-11-02 20:48:54,945 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2022-11-02 20:48:54,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2022-11-02 20:48:54,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:54,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2022-11-02 20:48:54,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states 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 20:48:54,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:48:54,954 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:48:54,954 INFO L175 Difference]: Start difference. First operand has 413 places, 430 transitions, 3425 flow. Second operand 19 states and 2930 transitions. [2022-11-02 20:48:54,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 494 transitions, 5035 flow [2022-11-02 20:48:55,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 494 transitions, 4787 flow, removed 85 selfloop flow, removed 11 redundant places. [2022-11-02 20:48:55,176 INFO L231 Difference]: Finished difference. Result has 424 places, 438 transitions, 3587 flow [2022-11-02 20:48:55,177 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3193, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3587, PETRI_PLACES=424, PETRI_TRANSITIONS=438} [2022-11-02 20:48:55,177 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 223 predicate places. [2022-11-02 20:48:55,177 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 438 transitions, 3587 flow [2022-11-02 20:48:55,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:55,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:55,179 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 20:48:55,179 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash 270515539, now seen corresponding path program 26 times [2022-11-02 20:48:55,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:55,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488431748] [2022-11-02 20:48:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:56,376 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 20:48:56,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:56,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488431748] [2022-11-02 20:48:56,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488431748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:56,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:56,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:56,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512848512] [2022-11-02 20:48:56,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:56,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:56,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:56,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:56,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:56,380 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:56,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 438 transitions, 3587 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:56,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:56,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:56,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:48:58,304 INFO L130 PetriNetUnfolder]: 1856/4845 cut-off events. [2022-11-02 20:48:58,304 INFO L131 PetriNetUnfolder]: For 77025/77045 co-relation queries the response was YES. [2022-11-02 20:48:58,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21859 conditions, 4845 events. 1856/4845 cut-off events. For 77025/77045 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 44233 event pairs, 783 based on Foata normal form. 9/4634 useless extension candidates. Maximal degree in co-relation 21751. Up to 2663 conditions per place. [2022-11-02 20:48:58,355 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 285 selfloop transitions, 72 changer transitions 5/497 dead transitions. [2022-11-02 20:48:58,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 497 transitions, 5263 flow [2022-11-02 20:48:58,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:48:58,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:48:58,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2780 transitions. [2022-11-02 20:48:58,358 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6925759840558047 [2022-11-02 20:48:58,359 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2780 transitions. [2022-11-02 20:48:58,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2780 transitions. [2022-11-02 20:48:58,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:48:58,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2780 transitions. [2022-11-02 20:48:58,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.44444444444446) internal successors, (2780), 18 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states 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 20:48:58,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:58,367 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:48:58,368 INFO L175 Difference]: Start difference. First operand has 424 places, 438 transitions, 3587 flow. Second operand 18 states and 2780 transitions. [2022-11-02 20:48:58,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 497 transitions, 5263 flow [2022-11-02 20:48:58,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 497 transitions, 4973 flow, removed 95 selfloop flow, removed 13 redundant places. [2022-11-02 20:48:58,660 INFO L231 Difference]: Finished difference. Result has 431 places, 444 transitions, 3736 flow [2022-11-02 20:48:58,660 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3303, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3736, PETRI_PLACES=431, PETRI_TRANSITIONS=444} [2022-11-02 20:48:58,661 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 230 predicate places. [2022-11-02 20:48:58,661 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 444 transitions, 3736 flow [2022-11-02 20:48:58,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:58,662 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:48:58,662 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:58,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 20:48:58,662 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:48:58,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:48:58,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1468345049, now seen corresponding path program 27 times [2022-11-02 20:48:58,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:48:58,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465711152] [2022-11-02 20:48:58,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:48:58,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:48:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:48:59,838 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 20:48:59,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:48:59,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465711152] [2022-11-02 20:48:59,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465711152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:48:59,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:48:59,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:48:59,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094128901] [2022-11-02 20:48:59,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:48:59,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:48:59,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:48:59,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:48:59,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:48:59,841 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:48:59,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 444 transitions, 3736 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:48:59,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:48:59,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:48:59,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:01,858 INFO L130 PetriNetUnfolder]: 1906/4876 cut-off events. [2022-11-02 20:49:01,858 INFO L131 PetriNetUnfolder]: For 85093/85103 co-relation queries the response was YES. [2022-11-02 20:49:01,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22582 conditions, 4876 events. 1906/4876 cut-off events. For 85093/85103 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 44165 event pairs, 966 based on Foata normal form. 2/4678 useless extension candidates. Maximal degree in co-relation 22470. Up to 2727 conditions per place. [2022-11-02 20:49:01,929 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 285 selfloop transitions, 80 changer transitions 5/505 dead transitions. [2022-11-02 20:49:01,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 505 transitions, 5402 flow [2022-11-02 20:49:01,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:49:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:49:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2928 transitions. [2022-11-02 20:49:01,932 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6910549917394383 [2022-11-02 20:49:01,932 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2928 transitions. [2022-11-02 20:49:01,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2928 transitions. [2022-11-02 20:49:01,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:01,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2928 transitions. [2022-11-02 20:49:01,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.10526315789474) internal successors, (2928), 19 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states 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 20:49:01,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:01,938 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:01,938 INFO L175 Difference]: Start difference. First operand has 431 places, 444 transitions, 3736 flow. Second operand 19 states and 2928 transitions. [2022-11-02 20:49:01,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 505 transitions, 5402 flow [2022-11-02 20:49:02,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 505 transitions, 5083 flow, removed 111 selfloop flow, removed 13 redundant places. [2022-11-02 20:49:02,314 INFO L231 Difference]: Finished difference. Result has 439 places, 453 transitions, 3906 flow [2022-11-02 20:49:02,315 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3906, PETRI_PLACES=439, PETRI_TRANSITIONS=453} [2022-11-02 20:49:02,315 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 238 predicate places. [2022-11-02 20:49:02,315 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 453 transitions, 3906 flow [2022-11-02 20:49:02,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:02,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:02,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:02,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 20:49:02,316 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:02,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:02,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1558139627, now seen corresponding path program 28 times [2022-11-02 20:49:02,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:02,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991477530] [2022-11-02 20:49:02,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:02,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:03,481 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 20:49:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:03,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991477530] [2022-11-02 20:49:03,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991477530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:03,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:03,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:03,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859763897] [2022-11-02 20:49:03,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:03,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:03,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:03,486 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:03,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 453 transitions, 3906 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:03,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:03,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:03,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:05,408 INFO L130 PetriNetUnfolder]: 1978/5149 cut-off events. [2022-11-02 20:49:05,409 INFO L131 PetriNetUnfolder]: For 96973/96993 co-relation queries the response was YES. [2022-11-02 20:49:05,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24026 conditions, 5149 events. 1978/5149 cut-off events. For 96973/96993 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 47876 event pairs, 834 based on Foata normal form. 9/4932 useless extension candidates. Maximal degree in co-relation 23910. Up to 2848 conditions per place. [2022-11-02 20:49:05,492 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 306 selfloop transitions, 74 changer transitions 5/520 dead transitions. [2022-11-02 20:49:05,492 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 520 transitions, 5767 flow [2022-11-02 20:49:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:49:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:49:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2022-11-02 20:49:05,497 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2022-11-02 20:49:05,497 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2022-11-02 20:49:05,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2022-11-02 20:49:05,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:05,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2022-11-02 20:49:05,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states 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 20:49:05,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:05,503 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:05,504 INFO L175 Difference]: Start difference. First operand has 439 places, 453 transitions, 3906 flow. Second operand 19 states and 2930 transitions. [2022-11-02 20:49:05,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 520 transitions, 5767 flow [2022-11-02 20:49:05,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 520 transitions, 5407 flow, removed 126 selfloop flow, removed 14 redundant places. [2022-11-02 20:49:05,920 INFO L231 Difference]: Finished difference. Result has 448 places, 464 transitions, 4017 flow [2022-11-02 20:49:05,921 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3549, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4017, PETRI_PLACES=448, PETRI_TRANSITIONS=464} [2022-11-02 20:49:05,921 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 247 predicate places. [2022-11-02 20:49:05,921 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 464 transitions, 4017 flow [2022-11-02 20:49:05,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:05,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:05,922 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:05,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 20:49:05,922 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:05,923 INFO L85 PathProgramCache]: Analyzing trace with hash 522978865, now seen corresponding path program 29 times [2022-11-02 20:49:05,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:05,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687110231] [2022-11-02 20:49:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:05,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:06,986 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 20:49:06,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:06,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687110231] [2022-11-02 20:49:06,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687110231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:06,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:06,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:06,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147946372] [2022-11-02 20:49:06,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:06,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:06,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:06,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:06,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:06,990 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:06,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 464 transitions, 4017 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:06,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:06,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:06,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:08,737 INFO L130 PetriNetUnfolder]: 1978/5028 cut-off events. [2022-11-02 20:49:08,737 INFO L131 PetriNetUnfolder]: For 92786/92794 co-relation queries the response was YES. [2022-11-02 20:49:08,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23702 conditions, 5028 events. 1978/5028 cut-off events. For 92786/92794 co-relation queries the response was YES. Maximal size of possible extension queue 425. Compared 45857 event pairs, 1051 based on Foata normal form. 1/4824 useless extension candidates. Maximal degree in co-relation 23580. Up to 2894 conditions per place. [2022-11-02 20:49:08,900 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 298 selfloop transitions, 75 changer transitions 5/513 dead transitions. [2022-11-02 20:49:08,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 463 places, 513 transitions, 5494 flow [2022-11-02 20:49:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:08,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2770 transitions. [2022-11-02 20:49:08,904 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6900847035376183 [2022-11-02 20:49:08,904 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2770 transitions. [2022-11-02 20:49:08,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2770 transitions. [2022-11-02 20:49:08,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:08,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2770 transitions. [2022-11-02 20:49:08,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.88888888888889) internal successors, (2770), 18 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states 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 20:49:08,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:08,913 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:08,914 INFO L175 Difference]: Start difference. First operand has 448 places, 464 transitions, 4017 flow. Second operand 18 states and 2770 transitions. [2022-11-02 20:49:08,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 463 places, 513 transitions, 5494 flow [2022-11-02 20:49:09,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 513 transitions, 5208 flow, removed 111 selfloop flow, removed 11 redundant places. [2022-11-02 20:49:09,281 INFO L231 Difference]: Finished difference. Result has 456 places, 467 transitions, 3968 flow [2022-11-02 20:49:09,282 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3733, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3968, PETRI_PLACES=456, PETRI_TRANSITIONS=467} [2022-11-02 20:49:09,283 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 255 predicate places. [2022-11-02 20:49:09,283 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 467 transitions, 3968 flow [2022-11-02 20:49:09,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:09,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:09,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:09,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 20:49:09,284 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:09,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:09,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1828924711, now seen corresponding path program 30 times [2022-11-02 20:49:09,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:09,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981026700] [2022-11-02 20:49:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:09,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:09,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:10,306 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 20:49:10,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:10,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981026700] [2022-11-02 20:49:10,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981026700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:10,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:10,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:10,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405981189] [2022-11-02 20:49:10,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:10,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:10,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:10,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:10,311 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:10,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 467 transitions, 3968 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:10,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:10,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:10,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:12,456 INFO L130 PetriNetUnfolder]: 2034/5297 cut-off events. [2022-11-02 20:49:12,456 INFO L131 PetriNetUnfolder]: For 95231/95251 co-relation queries the response was YES. [2022-11-02 20:49:12,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24493 conditions, 5297 events. 2034/5297 cut-off events. For 95231/95251 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 49660 event pairs, 860 based on Foata normal form. 9/5074 useless extension candidates. Maximal degree in co-relation 24368. Up to 2944 conditions per place. [2022-11-02 20:49:12,542 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 314 selfloop transitions, 78 changer transitions 5/532 dead transitions. [2022-11-02 20:49:12,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 532 transitions, 5878 flow [2022-11-02 20:49:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:49:12,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:49:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2022-11-02 20:49:12,545 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2022-11-02 20:49:12,546 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2022-11-02 20:49:12,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2022-11-02 20:49:12,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:12,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2022-11-02 20:49:12,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states 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 20:49:12,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:12,553 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:12,553 INFO L175 Difference]: Start difference. First operand has 456 places, 467 transitions, 3968 flow. Second operand 19 states and 2930 transitions. [2022-11-02 20:49:12,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 532 transitions, 5878 flow [2022-11-02 20:49:12,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 532 transitions, 5632 flow, removed 48 selfloop flow, removed 15 redundant places. [2022-11-02 20:49:12,905 INFO L231 Difference]: Finished difference. Result has 463 places, 479 transitions, 4282 flow [2022-11-02 20:49:12,906 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3726, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4282, PETRI_PLACES=463, PETRI_TRANSITIONS=479} [2022-11-02 20:49:12,906 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 262 predicate places. [2022-11-02 20:49:12,906 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 479 transitions, 4282 flow [2022-11-02 20:49:12,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:12,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:12,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:12,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 20:49:12,907 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:12,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:12,908 INFO L85 PathProgramCache]: Analyzing trace with hash 673345085, now seen corresponding path program 31 times [2022-11-02 20:49:12,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:12,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680309583] [2022-11-02 20:49:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:12,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:13,852 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 20:49:13,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:13,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680309583] [2022-11-02 20:49:13,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680309583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:13,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:13,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:13,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362018995] [2022-11-02 20:49:13,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:13,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:13,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:13,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:13,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:13,856 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:13,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 479 transitions, 4282 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:13,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:13,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:13,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:16,114 INFO L130 PetriNetUnfolder]: 2085/5432 cut-off events. [2022-11-02 20:49:16,115 INFO L131 PetriNetUnfolder]: For 114673/114695 co-relation queries the response was YES. [2022-11-02 20:49:16,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26040 conditions, 5432 events. 2085/5432 cut-off events. For 114673/114695 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 51235 event pairs, 876 based on Foata normal form. 14/5213 useless extension candidates. Maximal degree in co-relation 25912. Up to 3038 conditions per place. [2022-11-02 20:49:16,219 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 328 selfloop transitions, 76 changer transitions 5/544 dead transitions. [2022-11-02 20:49:16,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 544 transitions, 6329 flow [2022-11-02 20:49:16,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:49:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:49:16,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2022-11-02 20:49:16,222 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6924710880339863 [2022-11-02 20:49:16,222 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2022-11-02 20:49:16,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2022-11-02 20:49:16,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:16,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2022-11-02 20:49:16,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states 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 20:49:16,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:16,228 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:16,228 INFO L175 Difference]: Start difference. First operand has 463 places, 479 transitions, 4282 flow. Second operand 19 states and 2934 transitions. [2022-11-02 20:49:16,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 544 transitions, 6329 flow [2022-11-02 20:49:16,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 544 transitions, 5917 flow, removed 155 selfloop flow, removed 13 redundant places. [2022-11-02 20:49:16,639 INFO L231 Difference]: Finished difference. Result has 471 places, 486 transitions, 4392 flow [2022-11-02 20:49:16,640 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3901, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4392, PETRI_PLACES=471, PETRI_TRANSITIONS=486} [2022-11-02 20:49:16,640 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 270 predicate places. [2022-11-02 20:49:16,640 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 486 transitions, 4392 flow [2022-11-02 20:49:16,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:16,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:16,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:16,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 20:49:16,642 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:16,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:16,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1923565749, now seen corresponding path program 32 times [2022-11-02 20:49:16,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:16,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824634989] [2022-11-02 20:49:16,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:16,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:17,704 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 20:49:17,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:17,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824634989] [2022-11-02 20:49:17,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824634989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:17,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:17,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:17,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700790074] [2022-11-02 20:49:17,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:17,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:17,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:17,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:17,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:17,708 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:17,710 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 486 transitions, 4392 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:17,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:17,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:17,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:19,992 INFO L130 PetriNetUnfolder]: 2136/5482 cut-off events. [2022-11-02 20:49:19,992 INFO L131 PetriNetUnfolder]: For 119858/119866 co-relation queries the response was YES. [2022-11-02 20:49:20,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26869 conditions, 5482 events. 2136/5482 cut-off events. For 119858/119866 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 51267 event pairs, 1137 based on Foata normal form. 1/5250 useless extension candidates. Maximal degree in co-relation 26737. Up to 3114 conditions per place. [2022-11-02 20:49:20,110 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 333 selfloop transitions, 74 changer transitions 5/547 dead transitions. [2022-11-02 20:49:20,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 547 transitions, 6378 flow [2022-11-02 20:49:20,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:20,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:20,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2782 transitions. [2022-11-02 20:49:20,116 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.693074240159442 [2022-11-02 20:49:20,116 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2782 transitions. [2022-11-02 20:49:20,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2782 transitions. [2022-11-02 20:49:20,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:20,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2782 transitions. [2022-11-02 20:49:20,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.55555555555554) internal successors, (2782), 18 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states 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 20:49:20,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:20,124 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:20,124 INFO L175 Difference]: Start difference. First operand has 471 places, 486 transitions, 4392 flow. Second operand 18 states and 2782 transitions. [2022-11-02 20:49:20,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 547 transitions, 6378 flow [2022-11-02 20:49:20,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 547 transitions, 6029 flow, removed 121 selfloop flow, removed 14 redundant places. [2022-11-02 20:49:20,706 INFO L231 Difference]: Finished difference. Result has 477 places, 493 transitions, 4555 flow [2022-11-02 20:49:20,707 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4050, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4555, PETRI_PLACES=477, PETRI_TRANSITIONS=493} [2022-11-02 20:49:20,707 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 276 predicate places. [2022-11-02 20:49:20,707 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 493 transitions, 4555 flow [2022-11-02 20:49:20,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:20,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:20,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:20,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-02 20:49:20,708 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1105357807, now seen corresponding path program 33 times [2022-11-02 20:49:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:20,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724007490] [2022-11-02 20:49:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:21,653 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 20:49:21,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:21,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724007490] [2022-11-02 20:49:21,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724007490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:21,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:21,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:21,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478485345] [2022-11-02 20:49:21,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:21,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:21,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:21,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:21,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:21,658 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:21,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 493 transitions, 4555 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:21,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:21,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:21,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:23,673 INFO L130 PetriNetUnfolder]: 2163/5652 cut-off events. [2022-11-02 20:49:23,674 INFO L131 PetriNetUnfolder]: For 121748/121768 co-relation queries the response was YES. [2022-11-02 20:49:23,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27491 conditions, 5652 events. 2163/5652 cut-off events. For 121748/121768 co-relation queries the response was YES. Maximal size of possible extension queue 490. Compared 53841 event pairs, 951 based on Foata normal form. 9/5409 useless extension candidates. Maximal degree in co-relation 27355. Up to 3186 conditions per place. [2022-11-02 20:49:23,795 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 333 selfloop transitions, 79 changer transitions 5/552 dead transitions. [2022-11-02 20:49:23,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 552 transitions, 6456 flow [2022-11-02 20:49:23,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:23,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2776 transitions. [2022-11-02 20:49:23,798 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6915794718485302 [2022-11-02 20:49:23,798 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2776 transitions. [2022-11-02 20:49:23,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2776 transitions. [2022-11-02 20:49:23,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:23,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2776 transitions. [2022-11-02 20:49:23,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.22222222222223) internal successors, (2776), 18 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states 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 20:49:23,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:23,807 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:23,807 INFO L175 Difference]: Start difference. First operand has 477 places, 493 transitions, 4555 flow. Second operand 18 states and 2776 transitions. [2022-11-02 20:49:23,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 552 transitions, 6456 flow [2022-11-02 20:49:24,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 552 transitions, 6142 flow, removed 124 selfloop flow, removed 12 redundant places. [2022-11-02 20:49:24,202 INFO L231 Difference]: Finished difference. Result has 485 places, 503 transitions, 4677 flow [2022-11-02 20:49:24,203 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4243, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4677, PETRI_PLACES=485, PETRI_TRANSITIONS=503} [2022-11-02 20:49:24,203 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 284 predicate places. [2022-11-02 20:49:24,204 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 503 transitions, 4677 flow [2022-11-02 20:49:24,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:24,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:24,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:24,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 20:49:24,205 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:24,206 INFO L85 PathProgramCache]: Analyzing trace with hash 912077599, now seen corresponding path program 34 times [2022-11-02 20:49:24,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:24,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041807109] [2022-11-02 20:49:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:24,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:25,188 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 20:49:25,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:25,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041807109] [2022-11-02 20:49:25,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041807109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:25,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:25,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:25,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518267084] [2022-11-02 20:49:25,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:25,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:25,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:25,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:25,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:25,193 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:25,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 503 transitions, 4677 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:25,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:25,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:25,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:27,162 INFO L130 PetriNetUnfolder]: 2163/5528 cut-off events. [2022-11-02 20:49:27,162 INFO L131 PetriNetUnfolder]: For 113165/113173 co-relation queries the response was YES. [2022-11-02 20:49:27,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27045 conditions, 5528 events. 2163/5528 cut-off events. For 113165/113173 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 51695 event pairs, 1152 based on Foata normal form. 1/5296 useless extension candidates. Maximal degree in co-relation 26905. Up to 3172 conditions per place. [2022-11-02 20:49:27,311 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 332 selfloop transitions, 77 changer transitions 5/549 dead transitions. [2022-11-02 20:49:27,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 549 transitions, 6296 flow [2022-11-02 20:49:27,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:27,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2769 transitions. [2022-11-02 20:49:27,315 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6898355754857997 [2022-11-02 20:49:27,315 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2769 transitions. [2022-11-02 20:49:27,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2769 transitions. [2022-11-02 20:49:27,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:27,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2769 transitions. [2022-11-02 20:49:27,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.83333333333334) internal successors, (2769), 18 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states 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 20:49:27,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:27,321 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:27,321 INFO L175 Difference]: Start difference. First operand has 485 places, 503 transitions, 4677 flow. Second operand 18 states and 2769 transitions. [2022-11-02 20:49:27,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 549 transitions, 6296 flow [2022-11-02 20:49:27,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 549 transitions, 6092 flow, removed 51 selfloop flow, removed 11 redundant places. [2022-11-02 20:49:27,830 INFO L231 Difference]: Finished difference. Result has 493 places, 506 transitions, 4724 flow [2022-11-02 20:49:27,831 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4475, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4724, PETRI_PLACES=493, PETRI_TRANSITIONS=506} [2022-11-02 20:49:27,832 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 292 predicate places. [2022-11-02 20:49:27,832 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 506 transitions, 4724 flow [2022-11-02 20:49:27,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:27,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:27,833 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:27,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 20:49:27,833 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:27,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1030384775, now seen corresponding path program 35 times [2022-11-02 20:49:27,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:27,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698866364] [2022-11-02 20:49:27,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:27,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:27,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:28,641 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 20:49:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:28,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698866364] [2022-11-02 20:49:28,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698866364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:28,642 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:28,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:28,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875699902] [2022-11-02 20:49:28,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:28,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:28,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:28,646 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:28,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 506 transitions, 4724 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:28,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:28,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:28,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:30,793 INFO L130 PetriNetUnfolder]: 2163/5625 cut-off events. [2022-11-02 20:49:30,793 INFO L131 PetriNetUnfolder]: For 113914/113936 co-relation queries the response was YES. [2022-11-02 20:49:30,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27082 conditions, 5625 events. 2163/5625 cut-off events. For 113914/113936 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 53483 event pairs, 926 based on Foata normal form. 14/5398 useless extension candidates. Maximal degree in co-relation 26940. Up to 3156 conditions per place. [2022-11-02 20:49:30,931 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 334 selfloop transitions, 80 changer transitions 5/554 dead transitions. [2022-11-02 20:49:30,932 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 554 transitions, 6371 flow [2022-11-02 20:49:30,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2771 transitions. [2022-11-02 20:49:30,935 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.690333831589437 [2022-11-02 20:49:30,935 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2771 transitions. [2022-11-02 20:49:30,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2771 transitions. [2022-11-02 20:49:30,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:30,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2771 transitions. [2022-11-02 20:49:30,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.94444444444446) internal successors, (2771), 18 states have internal predecessors, (2771), 0 states have call successors, (0), 0 states 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 20:49:30,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:30,942 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:30,942 INFO L175 Difference]: Start difference. First operand has 493 places, 506 transitions, 4724 flow. Second operand 18 states and 2771 transitions. [2022-11-02 20:49:30,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 554 transitions, 6371 flow [2022-11-02 20:49:31,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 554 transitions, 6119 flow, removed 51 selfloop flow, removed 15 redundant places. [2022-11-02 20:49:31,538 INFO L231 Difference]: Finished difference. Result has 497 places, 509 transitions, 4728 flow [2022-11-02 20:49:31,539 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4474, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4728, PETRI_PLACES=497, PETRI_TRANSITIONS=509} [2022-11-02 20:49:31,539 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 296 predicate places. [2022-11-02 20:49:31,539 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 509 transitions, 4728 flow [2022-11-02 20:49:31,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:31,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:31,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 20:49:31,541 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash 692458969, now seen corresponding path program 36 times [2022-11-02 20:49:31,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:31,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049000763] [2022-11-02 20:49:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:31,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:32,441 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 20:49:32,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:32,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049000763] [2022-11-02 20:49:32,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049000763] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:32,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:32,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144699439] [2022-11-02 20:49:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:32,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:32,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:32,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 509 transitions, 4728 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:32,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:32,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:32,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:34,516 INFO L130 PetriNetUnfolder]: 2169/5552 cut-off events. [2022-11-02 20:49:34,517 INFO L131 PetriNetUnfolder]: For 114227/114237 co-relation queries the response was YES. [2022-11-02 20:49:34,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27092 conditions, 5552 events. 2169/5552 cut-off events. For 114227/114237 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 52070 event pairs, 1137 based on Foata normal form. 2/5319 useless extension candidates. Maximal degree in co-relation 26948. Up to 3192 conditions per place. [2022-11-02 20:49:34,685 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 341 selfloop transitions, 77 changer transitions 5/558 dead transitions. [2022-11-02 20:49:34,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 558 transitions, 6427 flow [2022-11-02 20:49:34,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:34,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2773 transitions. [2022-11-02 20:49:34,690 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6908320876930742 [2022-11-02 20:49:34,690 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2773 transitions. [2022-11-02 20:49:34,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2773 transitions. [2022-11-02 20:49:34,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:34,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2773 transitions. [2022-11-02 20:49:34,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.05555555555554) internal successors, (2773), 18 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states 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 20:49:34,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:34,699 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:34,699 INFO L175 Difference]: Start difference. First operand has 497 places, 509 transitions, 4728 flow. Second operand 18 states and 2773 transitions. [2022-11-02 20:49:34,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 558 transitions, 6427 flow [2022-11-02 20:49:35,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 558 transitions, 6199 flow, removed 35 selfloop flow, removed 15 redundant places. [2022-11-02 20:49:35,260 INFO L231 Difference]: Finished difference. Result has 501 places, 513 transitions, 4787 flow [2022-11-02 20:49:35,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4787, PETRI_PLACES=501, PETRI_TRANSITIONS=513} [2022-11-02 20:49:35,261 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 300 predicate places. [2022-11-02 20:49:35,261 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 513 transitions, 4787 flow [2022-11-02 20:49:35,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:35,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:35,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:35,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 20:49:35,262 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:35,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1110487829, now seen corresponding path program 37 times [2022-11-02 20:49:35,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:35,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670379646] [2022-11-02 20:49:35,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:35,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:35,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:36,092 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 20:49:36,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:36,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670379646] [2022-11-02 20:49:36,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670379646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:36,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:36,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:36,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724354246] [2022-11-02 20:49:36,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:36,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:36,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:36,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:36,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:36,095 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:36,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 513 transitions, 4787 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:36,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:36,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:36,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:38,204 INFO L130 PetriNetUnfolder]: 2175/5678 cut-off events. [2022-11-02 20:49:38,204 INFO L131 PetriNetUnfolder]: For 114533/114553 co-relation queries the response was YES. [2022-11-02 20:49:38,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27285 conditions, 5678 events. 2175/5678 cut-off events. For 114533/114553 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 54141 event pairs, 953 based on Foata normal form. 9/5435 useless extension candidates. Maximal degree in co-relation 27139. Up to 3191 conditions per place. [2022-11-02 20:49:38,330 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 344 selfloop transitions, 83 changer transitions 5/567 dead transitions. [2022-11-02 20:49:38,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 516 places, 567 transitions, 6669 flow [2022-11-02 20:49:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:38,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2775 transitions. [2022-11-02 20:49:38,334 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6913303437967115 [2022-11-02 20:49:38,334 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2775 transitions. [2022-11-02 20:49:38,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2775 transitions. [2022-11-02 20:49:38,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:38,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2775 transitions. [2022-11-02 20:49:38,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.16666666666666) internal successors, (2775), 18 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:38,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:38,339 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:38,339 INFO L175 Difference]: Start difference. First operand has 501 places, 513 transitions, 4787 flow. Second operand 18 states and 2775 transitions. [2022-11-02 20:49:38,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 516 places, 567 transitions, 6669 flow [2022-11-02 20:49:38,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 567 transitions, 6405 flow, removed 55 selfloop flow, removed 15 redundant places. [2022-11-02 20:49:38,922 INFO L231 Difference]: Finished difference. Result has 506 places, 521 transitions, 4987 flow [2022-11-02 20:49:38,922 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4529, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4987, PETRI_PLACES=506, PETRI_TRANSITIONS=521} [2022-11-02 20:49:38,922 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 305 predicate places. [2022-11-02 20:49:38,923 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 521 transitions, 4987 flow [2022-11-02 20:49:38,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:38,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:38,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:38,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-02 20:49:38,923 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:38,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:38,924 INFO L85 PathProgramCache]: Analyzing trace with hash -2082217581, now seen corresponding path program 38 times [2022-11-02 20:49:38,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592578921] [2022-11-02 20:49:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:39,689 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 20:49:39,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:39,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592578921] [2022-11-02 20:49:39,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592578921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:39,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:39,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178873163] [2022-11-02 20:49:39,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:39,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:39,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:39,693 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:39,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 521 transitions, 4987 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:39,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:39,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:39,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:41,862 INFO L130 PetriNetUnfolder]: 2175/5655 cut-off events. [2022-11-02 20:49:41,862 INFO L131 PetriNetUnfolder]: For 115986/116008 co-relation queries the response was YES. [2022-11-02 20:49:41,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27240 conditions, 5655 events. 2175/5655 cut-off events. For 115986/116008 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 54131 event pairs, 945 based on Foata normal form. 14/5420 useless extension candidates. Maximal degree in co-relation 27091. Up to 3187 conditions per place. [2022-11-02 20:49:41,984 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 348 selfloop transitions, 78 changer transitions 5/566 dead transitions. [2022-11-02 20:49:41,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 566 transitions, 6652 flow [2022-11-02 20:49:41,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:41,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2768 transitions. [2022-11-02 20:49:41,989 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6895864474339811 [2022-11-02 20:49:41,989 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2768 transitions. [2022-11-02 20:49:41,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2768 transitions. [2022-11-02 20:49:41,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:41,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2768 transitions. [2022-11-02 20:49:41,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.77777777777777) internal successors, (2768), 18 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states 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 20:49:41,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:41,998 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:41,998 INFO L175 Difference]: Start difference. First operand has 506 places, 521 transitions, 4987 flow. Second operand 18 states and 2768 transitions. [2022-11-02 20:49:41,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 566 transitions, 6652 flow [2022-11-02 20:49:42,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 507 places, 566 transitions, 6327 flow, removed 101 selfloop flow, removed 14 redundant places. [2022-11-02 20:49:42,501 INFO L231 Difference]: Finished difference. Result has 511 places, 524 transitions, 4888 flow [2022-11-02 20:49:42,502 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4665, PETRI_DIFFERENCE_MINUEND_PLACES=490, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4888, PETRI_PLACES=511, PETRI_TRANSITIONS=524} [2022-11-02 20:49:42,502 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 310 predicate places. [2022-11-02 20:49:42,502 INFO L495 AbstractCegarLoop]: Abstraction has has 511 places, 524 transitions, 4888 flow [2022-11-02 20:49:42,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:42,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:42,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:42,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-02 20:49:42,503 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:42,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash 386707887, now seen corresponding path program 39 times [2022-11-02 20:49:42,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:42,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077246504] [2022-11-02 20:49:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:42,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:43,506 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 20:49:43,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:43,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077246504] [2022-11-02 20:49:43,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077246504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:43,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:43,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:43,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64341224] [2022-11-02 20:49:43,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:43,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:43,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:43,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:43,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:43,511 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:43,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 511 places, 524 transitions, 4888 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:43,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:43,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:43,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:45,998 INFO L130 PetriNetUnfolder]: 2217/5802 cut-off events. [2022-11-02 20:49:45,999 INFO L131 PetriNetUnfolder]: For 128146/128168 co-relation queries the response was YES. [2022-11-02 20:49:46,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28224 conditions, 5802 events. 2217/5802 cut-off events. For 128146/128168 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 55913 event pairs, 955 based on Foata normal form. 13/5568 useless extension candidates. Maximal degree in co-relation 28074. Up to 3190 conditions per place. [2022-11-02 20:49:46,145 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 361 selfloop transitions, 90 changer transitions 5/591 dead transitions. [2022-11-02 20:49:46,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 591 transitions, 7166 flow [2022-11-02 20:49:46,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:49:46,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:49:46,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2022-11-02 20:49:46,149 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6924710880339863 [2022-11-02 20:49:46,149 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2022-11-02 20:49:46,149 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2022-11-02 20:49:46,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:46,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2022-11-02 20:49:46,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states 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 20:49:46,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:46,158 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:46,159 INFO L175 Difference]: Start difference. First operand has 511 places, 524 transitions, 4888 flow. Second operand 19 states and 2934 transitions. [2022-11-02 20:49:46,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 591 transitions, 7166 flow [2022-11-02 20:49:46,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 591 transitions, 7038 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-11-02 20:49:46,863 INFO L231 Difference]: Finished difference. Result has 519 places, 534 transitions, 5405 flow [2022-11-02 20:49:46,863 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4766, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=524, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5405, PETRI_PLACES=519, PETRI_TRANSITIONS=534} [2022-11-02 20:49:46,864 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 318 predicate places. [2022-11-02 20:49:46,864 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 534 transitions, 5405 flow [2022-11-02 20:49:46,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:46,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:46,864 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:46,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 20:49:46,865 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:46,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:46,865 INFO L85 PathProgramCache]: Analyzing trace with hash -767968577, now seen corresponding path program 40 times [2022-11-02 20:49:46,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:46,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270120341] [2022-11-02 20:49:46,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:46,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:47,743 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 20:49:47,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:47,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270120341] [2022-11-02 20:49:47,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270120341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:47,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:47,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:47,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290636523] [2022-11-02 20:49:47,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:47,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:47,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:47,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:47,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:47,747 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:47,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 534 transitions, 5405 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:47,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:47,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:47,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:50,318 INFO L130 PetriNetUnfolder]: 2227/5716 cut-off events. [2022-11-02 20:49:50,318 INFO L131 PetriNetUnfolder]: For 142118/142128 co-relation queries the response was YES. [2022-11-02 20:49:50,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28847 conditions, 5716 events. 2227/5716 cut-off events. For 142118/142128 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 54227 event pairs, 1197 based on Foata normal form. 1/5474 useless extension candidates. Maximal degree in co-relation 28693. Up to 3285 conditions per place. [2022-11-02 20:49:50,460 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 360 selfloop transitions, 84 changer transitions 5/584 dead transitions. [2022-11-02 20:49:50,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 584 transitions, 7424 flow [2022-11-02 20:49:50,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:50,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:50,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2770 transitions. [2022-11-02 20:49:50,463 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6900847035376183 [2022-11-02 20:49:50,464 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2770 transitions. [2022-11-02 20:49:50,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2770 transitions. [2022-11-02 20:49:50,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:50,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2770 transitions. [2022-11-02 20:49:50,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.88888888888889) internal successors, (2770), 18 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states 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 20:49:50,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:50,469 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:50,469 INFO L175 Difference]: Start difference. First operand has 519 places, 534 transitions, 5405 flow. Second operand 18 states and 2770 transitions. [2022-11-02 20:49:50,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 584 transitions, 7424 flow [2022-11-02 20:49:51,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 584 transitions, 6965 flow, removed 168 selfloop flow, removed 13 redundant places. [2022-11-02 20:49:51,291 INFO L231 Difference]: Finished difference. Result has 525 places, 542 transitions, 5477 flow [2022-11-02 20:49:51,291 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=4954, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=534, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5477, PETRI_PLACES=525, PETRI_TRANSITIONS=542} [2022-11-02 20:49:51,292 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 324 predicate places. [2022-11-02 20:49:51,292 INFO L495 AbstractCegarLoop]: Abstraction has has 525 places, 542 transitions, 5477 flow [2022-11-02 20:49:51,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:51,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:51,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:51,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-02 20:49:51,294 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:51,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:51,294 INFO L85 PathProgramCache]: Analyzing trace with hash 194756897, now seen corresponding path program 41 times [2022-11-02 20:49:51,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:51,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568634579] [2022-11-02 20:49:51,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:51,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:52,314 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 20:49:52,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:52,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568634579] [2022-11-02 20:49:52,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568634579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:52,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:52,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:52,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294220784] [2022-11-02 20:49:52,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:52,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:52,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:52,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:52,318 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:52,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 542 transitions, 5477 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:52,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:52,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:52,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:55,020 INFO L130 PetriNetUnfolder]: 2267/5837 cut-off events. [2022-11-02 20:49:55,020 INFO L131 PetriNetUnfolder]: For 145989/145999 co-relation queries the response was YES. [2022-11-02 20:49:55,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29368 conditions, 5837 events. 2267/5837 cut-off events. For 145989/145999 co-relation queries the response was YES. Maximal size of possible extension queue 521. Compared 55802 event pairs, 1184 based on Foata normal form. 1/5591 useless extension candidates. Maximal degree in co-relation 29212. Up to 3247 conditions per place. [2022-11-02 20:49:55,153 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 373 selfloop transitions, 94 changer transitions 5/607 dead transitions. [2022-11-02 20:49:55,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 607 transitions, 7603 flow [2022-11-02 20:49:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:49:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:49:55,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2022-11-02 20:49:55,156 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6924710880339863 [2022-11-02 20:49:55,156 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2022-11-02 20:49:55,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2022-11-02 20:49:55,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:55,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2022-11-02 20:49:55,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states 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 20:49:55,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:55,161 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:49:55,162 INFO L175 Difference]: Start difference. First operand has 525 places, 542 transitions, 5477 flow. Second operand 19 states and 2934 transitions. [2022-11-02 20:49:55,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 607 transitions, 7603 flow [2022-11-02 20:49:56,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 607 transitions, 7266 flow, removed 121 selfloop flow, removed 11 redundant places. [2022-11-02 20:49:56,050 INFO L231 Difference]: Finished difference. Result has 536 places, 551 transitions, 5695 flow [2022-11-02 20:49:56,051 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=5142, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5695, PETRI_PLACES=536, PETRI_TRANSITIONS=551} [2022-11-02 20:49:56,051 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 335 predicate places. [2022-11-02 20:49:56,051 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 551 transitions, 5695 flow [2022-11-02 20:49:56,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:56,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:56,052 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:56,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-02 20:49:56,052 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:49:56,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:56,052 INFO L85 PathProgramCache]: Analyzing trace with hash 834462035, now seen corresponding path program 42 times [2022-11-02 20:49:56,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:56,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400922098] [2022-11-02 20:49:56,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:56,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:57,037 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 20:49:57,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:57,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400922098] [2022-11-02 20:49:57,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400922098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:57,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:57,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:49:57,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976495568] [2022-11-02 20:49:57,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:57,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:49:57,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:57,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:49:57,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:49:57,042 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:49:57,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 551 transitions, 5695 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:49:57,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:57,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:49:57,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:59,719 INFO L130 PetriNetUnfolder]: 2309/6075 cut-off events. [2022-11-02 20:49:59,719 INFO L131 PetriNetUnfolder]: For 170665/170687 co-relation queries the response was YES. [2022-11-02 20:49:59,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31207 conditions, 6075 events. 2309/6075 cut-off events. For 170665/170687 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 59419 event pairs, 1030 based on Foata normal form. 13/5818 useless extension candidates. Maximal degree in co-relation 31046. Up to 3369 conditions per place. [2022-11-02 20:49:59,823 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 382 selfloop transitions, 89 changer transitions 5/611 dead transitions. [2022-11-02 20:49:59,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 611 transitions, 8041 flow [2022-11-02 20:49:59,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:49:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:49:59,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2784 transitions. [2022-11-02 20:49:59,826 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6935724962630793 [2022-11-02 20:49:59,826 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2784 transitions. [2022-11-02 20:49:59,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2784 transitions. [2022-11-02 20:49:59,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:59,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2784 transitions. [2022-11-02 20:49:59,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.66666666666666) internal successors, (2784), 18 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states 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 20:49:59,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:59,832 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:49:59,832 INFO L175 Difference]: Start difference. First operand has 536 places, 551 transitions, 5695 flow. Second operand 18 states and 2784 transitions. [2022-11-02 20:49:59,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 611 transitions, 8041 flow [2022-11-02 20:50:00,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 611 transitions, 7620 flow, removed 150 selfloop flow, removed 13 redundant places. [2022-11-02 20:50:00,730 INFO L231 Difference]: Finished difference. Result has 543 places, 557 transitions, 5883 flow [2022-11-02 20:50:00,731 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=5280, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5883, PETRI_PLACES=543, PETRI_TRANSITIONS=557} [2022-11-02 20:50:00,731 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 342 predicate places. [2022-11-02 20:50:00,731 INFO L495 AbstractCegarLoop]: Abstraction has has 543 places, 557 transitions, 5883 flow [2022-11-02 20:50:00,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:00,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:00,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:00,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-02 20:50:00,733 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:00,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:00,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1210875827, now seen corresponding path program 43 times [2022-11-02 20:50:00,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:00,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433490919] [2022-11-02 20:50:00,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:01,825 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 20:50:01,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:01,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433490919] [2022-11-02 20:50:01,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433490919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:01,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:01,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:01,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789329497] [2022-11-02 20:50:01,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:01,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:01,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:01,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:01,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:01,830 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:01,835 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 557 transitions, 5883 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:01,835 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:01,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:01,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:04,552 INFO L130 PetriNetUnfolder]: 2321/6014 cut-off events. [2022-11-02 20:50:04,552 INFO L131 PetriNetUnfolder]: For 169552/169562 co-relation queries the response was YES. [2022-11-02 20:50:04,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31068 conditions, 6014 events. 2321/6014 cut-off events. For 169552/169562 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 58055 event pairs, 1240 based on Foata normal form. 1/5766 useless extension candidates. Maximal degree in co-relation 30903. Up to 3435 conditions per place. [2022-11-02 20:50:04,719 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 378 selfloop transitions, 91 changer transitions 5/609 dead transitions. [2022-11-02 20:50:04,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 609 transitions, 7829 flow [2022-11-02 20:50:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:50:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:50:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2774 transitions. [2022-11-02 20:50:04,723 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6910812157448929 [2022-11-02 20:50:04,723 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2774 transitions. [2022-11-02 20:50:04,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2774 transitions. [2022-11-02 20:50:04,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:04,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2774 transitions. [2022-11-02 20:50:04,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.11111111111111) internal successors, (2774), 18 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states 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 20:50:04,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:04,731 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:04,732 INFO L175 Difference]: Start difference. First operand has 543 places, 557 transitions, 5883 flow. Second operand 18 states and 2774 transitions. [2022-11-02 20:50:04,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 609 transitions, 7829 flow [2022-11-02 20:50:05,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 609 transitions, 7373 flow, removed 169 selfloop flow, removed 13 redundant places. [2022-11-02 20:50:05,492 INFO L231 Difference]: Finished difference. Result has 549 places, 562 transitions, 5773 flow [2022-11-02 20:50:05,492 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=5429, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5773, PETRI_PLACES=549, PETRI_TRANSITIONS=562} [2022-11-02 20:50:05,492 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 348 predicate places. [2022-11-02 20:50:05,493 INFO L495 AbstractCegarLoop]: Abstraction has has 549 places, 562 transitions, 5773 flow [2022-11-02 20:50:05,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:05,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:05,493 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:05,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-02 20:50:05,493 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:05,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:05,494 INFO L85 PathProgramCache]: Analyzing trace with hash -188045497, now seen corresponding path program 44 times [2022-11-02 20:50:05,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:05,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901991405] [2022-11-02 20:50:05,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:05,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:06,690 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 20:50:06,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:06,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901991405] [2022-11-02 20:50:06,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901991405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:06,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:06,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7712417] [2022-11-02 20:50:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:06,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:06,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:06,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:06,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:06,696 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:06,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 549 places, 562 transitions, 5773 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:06,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:06,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:06,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:09,780 INFO L130 PetriNetUnfolder]: 2361/6121 cut-off events. [2022-11-02 20:50:09,780 INFO L131 PetriNetUnfolder]: For 166978/166988 co-relation queries the response was YES. [2022-11-02 20:50:09,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31400 conditions, 6121 events. 2361/6121 cut-off events. For 166978/166988 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 59265 event pairs, 1248 based on Foata normal form. 1/5863 useless extension candidates. Maximal degree in co-relation 31232. Up to 3454 conditions per place. [2022-11-02 20:50:09,959 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 399 selfloop transitions, 91 changer transitions 5/630 dead transitions. [2022-11-02 20:50:09,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 630 transitions, 8252 flow [2022-11-02 20:50:09,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:50:09,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:50:09,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2022-11-02 20:50:09,963 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6924710880339863 [2022-11-02 20:50:09,963 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2022-11-02 20:50:09,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2022-11-02 20:50:09,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:09,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2022-11-02 20:50:09,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states 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 20:50:09,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:50:09,973 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:50:09,973 INFO L175 Difference]: Start difference. First operand has 549 places, 562 transitions, 5773 flow. Second operand 19 states and 2934 transitions. [2022-11-02 20:50:09,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 630 transitions, 8252 flow [2022-11-02 20:50:10,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 630 transitions, 8002 flow, removed 64 selfloop flow, removed 12 redundant places. [2022-11-02 20:50:10,978 INFO L231 Difference]: Finished difference. Result has 560 places, 573 transitions, 6148 flow [2022-11-02 20:50:10,978 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=5526, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6148, PETRI_PLACES=560, PETRI_TRANSITIONS=573} [2022-11-02 20:50:10,979 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 359 predicate places. [2022-11-02 20:50:10,979 INFO L495 AbstractCegarLoop]: Abstraction has has 560 places, 573 transitions, 6148 flow [2022-11-02 20:50:10,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:10,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:10,980 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:10,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-02 20:50:10,981 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:10,982 INFO L85 PathProgramCache]: Analyzing trace with hash -804181979, now seen corresponding path program 45 times [2022-11-02 20:50:10,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626723581] [2022-11-02 20:50:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:10,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:12,123 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 20:50:12,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:12,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626723581] [2022-11-02 20:50:12,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626723581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:12,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:12,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:12,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025680919] [2022-11-02 20:50:12,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:12,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:12,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:12,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:12,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:12,127 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:12,128 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 560 places, 573 transitions, 6148 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:12,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:12,129 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:12,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:15,711 INFO L130 PetriNetUnfolder]: 2401/6346 cut-off events. [2022-11-02 20:50:15,711 INFO L131 PetriNetUnfolder]: For 188054/188076 co-relation queries the response was YES. [2022-11-02 20:50:15,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32930 conditions, 6346 events. 2401/6346 cut-off events. For 188054/188076 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 62928 event pairs, 1036 based on Foata normal form. 13/6095 useless extension candidates. Maximal degree in co-relation 32756. Up to 3449 conditions per place. [2022-11-02 20:50:15,947 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 387 selfloop transitions, 106 changer transitions 5/633 dead transitions. [2022-11-02 20:50:15,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 633 transitions, 8359 flow [2022-11-02 20:50:15,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:50:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:50:15,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2932 transitions. [2022-11-02 20:50:15,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6919990559358037 [2022-11-02 20:50:15,951 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2932 transitions. [2022-11-02 20:50:15,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2932 transitions. [2022-11-02 20:50:15,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:15,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2932 transitions. [2022-11-02 20:50:15,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.31578947368422) internal successors, (2932), 19 states have internal predecessors, (2932), 0 states have call successors, (0), 0 states 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 20:50:15,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:50:15,961 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:50:15,961 INFO L175 Difference]: Start difference. First operand has 560 places, 573 transitions, 6148 flow. Second operand 19 states and 2932 transitions. [2022-11-02 20:50:15,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 633 transitions, 8359 flow [2022-11-02 20:50:17,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 633 transitions, 7967 flow, removed 160 selfloop flow, removed 11 redundant places. [2022-11-02 20:50:17,235 INFO L231 Difference]: Finished difference. Result has 570 places, 580 transitions, 6324 flow [2022-11-02 20:50:17,235 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=5758, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6324, PETRI_PLACES=570, PETRI_TRANSITIONS=580} [2022-11-02 20:50:17,236 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 369 predicate places. [2022-11-02 20:50:17,236 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 580 transitions, 6324 flow [2022-11-02 20:50:17,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:17,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:17,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:17,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-02 20:50:17,237 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:17,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:17,237 INFO L85 PathProgramCache]: Analyzing trace with hash 503259523, now seen corresponding path program 46 times [2022-11-02 20:50:17,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:17,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571889064] [2022-11-02 20:50:17,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:17,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:18,273 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 20:50:18,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:18,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571889064] [2022-11-02 20:50:18,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571889064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:18,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:18,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:18,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210505376] [2022-11-02 20:50:18,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:18,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:18,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:18,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:18,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:18,278 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:18,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 580 transitions, 6324 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:18,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:18,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:18,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:21,601 INFO L130 PetriNetUnfolder]: 2441/6450 cut-off events. [2022-11-02 20:50:21,601 INFO L131 PetriNetUnfolder]: For 198220/198242 co-relation queries the response was YES. [2022-11-02 20:50:21,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33720 conditions, 6450 events. 2441/6450 cut-off events. For 198220/198242 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 64228 event pairs, 1096 based on Foata normal form. 13/6184 useless extension candidates. Maximal degree in co-relation 33542. Up to 3603 conditions per place. [2022-11-02 20:50:21,861 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 409 selfloop transitions, 95 changer transitions 5/644 dead transitions. [2022-11-02 20:50:21,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 644 transitions, 8844 flow [2022-11-02 20:50:21,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:50:21,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:50:21,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2022-11-02 20:50:21,865 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6924710880339863 [2022-11-02 20:50:21,865 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2022-11-02 20:50:21,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2022-11-02 20:50:21,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:21,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2022-11-02 20:50:21,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states 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 20:50:21,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:50:21,871 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:50:21,871 INFO L175 Difference]: Start difference. First operand has 570 places, 580 transitions, 6324 flow. Second operand 19 states and 2934 transitions. [2022-11-02 20:50:21,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 644 transitions, 8844 flow [2022-11-02 20:50:23,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 644 transitions, 8413 flow, removed 145 selfloop flow, removed 17 redundant places. [2022-11-02 20:50:23,052 INFO L231 Difference]: Finished difference. Result has 575 places, 590 transitions, 6607 flow [2022-11-02 20:50:23,053 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=5900, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6607, PETRI_PLACES=575, PETRI_TRANSITIONS=590} [2022-11-02 20:50:23,053 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 374 predicate places. [2022-11-02 20:50:23,053 INFO L495 AbstractCegarLoop]: Abstraction has has 575 places, 590 transitions, 6607 flow [2022-11-02 20:50:23,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:23,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:23,054 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:23,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-02 20:50:23,054 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:23,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:23,055 INFO L85 PathProgramCache]: Analyzing trace with hash 671006143, now seen corresponding path program 47 times [2022-11-02 20:50:23,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:23,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518607439] [2022-11-02 20:50:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:23,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:24,008 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 20:50:24,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:24,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518607439] [2022-11-02 20:50:24,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518607439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:24,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:24,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:24,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638980546] [2022-11-02 20:50:24,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:24,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:24,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:24,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:24,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:24,013 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:24,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 590 transitions, 6607 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:24,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:24,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:24,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:27,118 INFO L130 PetriNetUnfolder]: 2492/6590 cut-off events. [2022-11-02 20:50:27,118 INFO L131 PetriNetUnfolder]: For 217576/217598 co-relation queries the response was YES. [2022-11-02 20:50:27,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35227 conditions, 6590 events. 2492/6590 cut-off events. For 217576/217598 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 65781 event pairs, 1126 based on Foata normal form. 13/6321 useless extension candidates. Maximal degree in co-relation 35047. Up to 3697 conditions per place. [2022-11-02 20:50:27,415 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 423 selfloop transitions, 93 changer transitions 5/656 dead transitions. [2022-11-02 20:50:27,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 656 transitions, 9333 flow [2022-11-02 20:50:27,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:50:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-02 20:50:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2938 transitions. [2022-11-02 20:50:27,419 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6934151522303517 [2022-11-02 20:50:27,419 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2938 transitions. [2022-11-02 20:50:27,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2938 transitions. [2022-11-02 20:50:27,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:27,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2938 transitions. [2022-11-02 20:50:27,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.6315789473684) internal successors, (2938), 19 states have internal predecessors, (2938), 0 states have call successors, (0), 0 states 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 20:50:27,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:50:27,427 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states 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 20:50:27,427 INFO L175 Difference]: Start difference. First operand has 575 places, 590 transitions, 6607 flow. Second operand 19 states and 2938 transitions. [2022-11-02 20:50:27,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 656 transitions, 9333 flow [2022-11-02 20:50:28,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 656 transitions, 8788 flow, removed 205 selfloop flow, removed 16 redundant places. [2022-11-02 20:50:28,570 INFO L231 Difference]: Finished difference. Result has 580 places, 597 transitions, 6735 flow [2022-11-02 20:50:28,570 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=6069, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6735, PETRI_PLACES=580, PETRI_TRANSITIONS=597} [2022-11-02 20:50:28,571 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 379 predicate places. [2022-11-02 20:50:28,571 INFO L495 AbstractCegarLoop]: Abstraction has has 580 places, 597 transitions, 6735 flow [2022-11-02 20:50:28,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:28,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:28,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:28,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-02 20:50:28,571 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:28,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:28,572 INFO L85 PathProgramCache]: Analyzing trace with hash -646112619, now seen corresponding path program 48 times [2022-11-02 20:50:28,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:28,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781753201] [2022-11-02 20:50:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:28,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:29,554 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 20:50:29,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:29,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781753201] [2022-11-02 20:50:29,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781753201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:29,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:29,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:29,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938952653] [2022-11-02 20:50:29,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:29,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:29,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:29,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:29,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:29,559 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:29,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 597 transitions, 6735 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:29,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:29,560 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:29,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:32,429 INFO L130 PetriNetUnfolder]: 2498/6614 cut-off events. [2022-11-02 20:50:32,430 INFO L131 PetriNetUnfolder]: For 206030/206052 co-relation queries the response was YES. [2022-11-02 20:50:32,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34814 conditions, 6614 events. 2498/6614 cut-off events. For 206030/206052 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 66325 event pairs, 1160 based on Foata normal form. 13/6337 useless extension candidates. Maximal degree in co-relation 34633. Up to 3760 conditions per place. [2022-11-02 20:50:32,588 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 415 selfloop transitions, 88 changer transitions 5/643 dead transitions. [2022-11-02 20:50:32,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 643 transitions, 8801 flow [2022-11-02 20:50:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:50:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:50:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2772 transitions. [2022-11-02 20:50:32,592 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6905829596412556 [2022-11-02 20:50:32,592 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2772 transitions. [2022-11-02 20:50:32,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2772 transitions. [2022-11-02 20:50:32,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:32,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2772 transitions. [2022-11-02 20:50:32,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.0) internal successors, (2772), 18 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states 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 20:50:32,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:32,598 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:32,598 INFO L175 Difference]: Start difference. First operand has 580 places, 597 transitions, 6735 flow. Second operand 18 states and 2772 transitions. [2022-11-02 20:50:32,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 643 transitions, 8801 flow [2022-11-02 20:50:33,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 643 transitions, 8330 flow, removed 174 selfloop flow, removed 13 redundant places. [2022-11-02 20:50:33,694 INFO L231 Difference]: Finished difference. Result has 586 places, 600 transitions, 6575 flow [2022-11-02 20:50:33,695 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=6267, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6575, PETRI_PLACES=586, PETRI_TRANSITIONS=600} [2022-11-02 20:50:33,695 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 385 predicate places. [2022-11-02 20:50:33,696 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 600 transitions, 6575 flow [2022-11-02 20:50:33,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:33,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:33,697 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:33,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-02 20:50:33,697 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -130012939, now seen corresponding path program 49 times [2022-11-02 20:50:33,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:33,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873877113] [2022-11-02 20:50:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:33,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:34,754 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 20:50:34,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:34,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873877113] [2022-11-02 20:50:34,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873877113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:34,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:34,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:34,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026431256] [2022-11-02 20:50:34,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:34,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:34,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:34,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:34,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:34,758 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:34,760 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 600 transitions, 6575 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:34,760 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:34,760 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:34,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:37,774 INFO L130 PetriNetUnfolder]: 2549/6747 cut-off events. [2022-11-02 20:50:37,775 INFO L131 PetriNetUnfolder]: For 214958/214980 co-relation queries the response was YES. [2022-11-02 20:50:37,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36007 conditions, 6747 events. 2549/6747 cut-off events. For 214958/214980 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 67877 event pairs, 1190 based on Foata normal form. 13/6467 useless extension candidates. Maximal degree in co-relation 35823. Up to 3775 conditions per place. [2022-11-02 20:50:37,984 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 428 selfloop transitions, 94 changer transitions 5/662 dead transitions. [2022-11-02 20:50:37,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 662 transitions, 9251 flow [2022-11-02 20:50:37,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:50:37,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:50:37,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2786 transitions. [2022-11-02 20:50:37,988 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6940707523667164 [2022-11-02 20:50:37,988 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2786 transitions. [2022-11-02 20:50:37,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2786 transitions. [2022-11-02 20:50:37,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:37,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2786 transitions. [2022-11-02 20:50:37,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.77777777777777) internal successors, (2786), 18 states have internal predecessors, (2786), 0 states have call successors, (0), 0 states 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 20:50:37,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:37,994 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:37,994 INFO L175 Difference]: Start difference. First operand has 586 places, 600 transitions, 6575 flow. Second operand 18 states and 2786 transitions. [2022-11-02 20:50:37,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 662 transitions, 9251 flow [2022-11-02 20:50:39,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 662 transitions, 9048 flow, removed 39 selfloop flow, removed 14 redundant places. [2022-11-02 20:50:39,363 INFO L231 Difference]: Finished difference. Result has 592 places, 607 transitions, 7076 flow [2022-11-02 20:50:39,363 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=6379, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7076, PETRI_PLACES=592, PETRI_TRANSITIONS=607} [2022-11-02 20:50:39,364 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 391 predicate places. [2022-11-02 20:50:39,364 INFO L495 AbstractCegarLoop]: Abstraction has has 592 places, 607 transitions, 7076 flow [2022-11-02 20:50:39,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:39,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:39,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:39,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-02 20:50:39,366 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:39,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:39,366 INFO L85 PathProgramCache]: Analyzing trace with hash 310716387, now seen corresponding path program 50 times [2022-11-02 20:50:39,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:39,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974301454] [2022-11-02 20:50:39,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:39,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:40,368 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 20:50:40,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:40,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974301454] [2022-11-02 20:50:40,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974301454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:40,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:40,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:40,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292172068] [2022-11-02 20:50:40,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:40,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:40,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:40,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:40,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:40,373 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:40,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 607 transitions, 7076 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:40,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:40,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:40,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:43,525 INFO L130 PetriNetUnfolder]: 2576/6826 cut-off events. [2022-11-02 20:50:43,525 INFO L131 PetriNetUnfolder]: For 234226/234248 co-relation queries the response was YES. [2022-11-02 20:50:43,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37128 conditions, 6826 events. 2576/6826 cut-off events. For 234226/234248 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 68793 event pairs, 1196 based on Foata normal form. 13/6543 useless extension candidates. Maximal degree in co-relation 36941. Up to 3859 conditions per place. [2022-11-02 20:50:43,673 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 430 selfloop transitions, 97 changer transitions 5/667 dead transitions. [2022-11-02 20:50:43,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 667 transitions, 9586 flow [2022-11-02 20:50:43,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:50:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:50:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2780 transitions. [2022-11-02 20:50:43,676 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6925759840558047 [2022-11-02 20:50:43,676 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2780 transitions. [2022-11-02 20:50:43,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2780 transitions. [2022-11-02 20:50:43,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:43,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2780 transitions. [2022-11-02 20:50:43,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.44444444444446) internal successors, (2780), 18 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states 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 20:50:43,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:43,681 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:43,681 INFO L175 Difference]: Start difference. First operand has 592 places, 607 transitions, 7076 flow. Second operand 18 states and 2780 transitions. [2022-11-02 20:50:43,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 667 transitions, 9586 flow [2022-11-02 20:50:44,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 667 transitions, 9152 flow, removed 180 selfloop flow, removed 12 redundant places. [2022-11-02 20:50:44,926 INFO L231 Difference]: Finished difference. Result has 600 places, 617 transitions, 7213 flow [2022-11-02 20:50:44,927 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=6644, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=607, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7213, PETRI_PLACES=600, PETRI_TRANSITIONS=617} [2022-11-02 20:50:44,927 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 399 predicate places. [2022-11-02 20:50:44,927 INFO L495 AbstractCegarLoop]: Abstraction has has 600 places, 617 transitions, 7213 flow [2022-11-02 20:50:44,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:44,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:44,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:44,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-02 20:50:44,928 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 634680723, now seen corresponding path program 51 times [2022-11-02 20:50:44,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:44,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475191378] [2022-11-02 20:50:44,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:44,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:44,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:45,989 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 20:50:45,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:45,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475191378] [2022-11-02 20:50:45,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475191378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:45,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:45,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:45,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165676994] [2022-11-02 20:50:45,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:45,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:45,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:45,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:45,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:45,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:45,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 617 transitions, 7213 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:45,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:45,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:45,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:49,049 INFO L130 PetriNetUnfolder]: 2582/6722 cut-off events. [2022-11-02 20:50:49,049 INFO L131 PetriNetUnfolder]: For 215931/215941 co-relation queries the response was YES. [2022-11-02 20:50:49,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36556 conditions, 6722 events. 2582/6722 cut-off events. For 215931/215941 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 66948 event pairs, 1396 based on Foata normal form. 1/6444 useless extension candidates. Maximal degree in co-relation 36365. Up to 3858 conditions per place. [2022-11-02 20:50:49,271 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 432 selfloop transitions, 100 changer transitions 5/672 dead transitions. [2022-11-02 20:50:49,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 672 transitions, 9622 flow [2022-11-02 20:50:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:50:49,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:50:49,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2779 transitions. [2022-11-02 20:50:49,274 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.692326856003986 [2022-11-02 20:50:49,274 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2779 transitions. [2022-11-02 20:50:49,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2779 transitions. [2022-11-02 20:50:49,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:49,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2779 transitions. [2022-11-02 20:50:49,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.38888888888889) internal successors, (2779), 18 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states 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 20:50:49,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:49,279 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:49,279 INFO L175 Difference]: Start difference. First operand has 600 places, 617 transitions, 7213 flow. Second operand 18 states and 2779 transitions. [2022-11-02 20:50:49,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 672 transitions, 9622 flow [2022-11-02 20:50:50,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 672 transitions, 9346 flow, removed 75 selfloop flow, removed 11 redundant places. [2022-11-02 20:50:50,394 INFO L231 Difference]: Finished difference. Result has 609 places, 625 transitions, 7520 flow [2022-11-02 20:50:50,395 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=6941, PETRI_DIFFERENCE_MINUEND_PLACES=587, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7520, PETRI_PLACES=609, PETRI_TRANSITIONS=625} [2022-11-02 20:50:50,395 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 408 predicate places. [2022-11-02 20:50:50,395 INFO L495 AbstractCegarLoop]: Abstraction has has 609 places, 625 transitions, 7520 flow [2022-11-02 20:50:50,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:50,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:50,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:50,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-02 20:50:50,396 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:50,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:50,396 INFO L85 PathProgramCache]: Analyzing trace with hash -861970495, now seen corresponding path program 52 times [2022-11-02 20:50:50,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:50,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745122312] [2022-11-02 20:50:50,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:50,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:50,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:51,369 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 20:50:51,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:51,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745122312] [2022-11-02 20:50:51,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745122312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:51,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:51,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:51,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787313927] [2022-11-02 20:50:51,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:51,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:51,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:51,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:51,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:51,373 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:51,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 625 transitions, 7520 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:51,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:51,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:51,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:54,618 INFO L130 PetriNetUnfolder]: 2582/6715 cut-off events. [2022-11-02 20:50:54,618 INFO L131 PetriNetUnfolder]: For 218874/218884 co-relation queries the response was YES. [2022-11-02 20:50:54,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36501 conditions, 6715 events. 2582/6715 cut-off events. For 218874/218884 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 66782 event pairs, 1395 based on Foata normal form. 1/6444 useless extension candidates. Maximal degree in co-relation 36307. Up to 3832 conditions per place. [2022-11-02 20:50:54,869 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 434 selfloop transitions, 100 changer transitions 5/674 dead transitions. [2022-11-02 20:50:54,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 674 transitions, 9698 flow [2022-11-02 20:50:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:50:54,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:50:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2775 transitions. [2022-11-02 20:50:54,872 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6913303437967115 [2022-11-02 20:50:54,872 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2775 transitions. [2022-11-02 20:50:54,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2775 transitions. [2022-11-02 20:50:54,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:54,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2775 transitions. [2022-11-02 20:50:54,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.16666666666666) internal successors, (2775), 18 states have internal predecessors, (2775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:54,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:54,877 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:50:54,877 INFO L175 Difference]: Start difference. First operand has 609 places, 625 transitions, 7520 flow. Second operand 18 states and 2775 transitions. [2022-11-02 20:50:54,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 674 transitions, 9698 flow [2022-11-02 20:50:56,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 674 transitions, 9281 flow, removed 137 selfloop flow, removed 14 redundant places. [2022-11-02 20:50:56,464 INFO L231 Difference]: Finished difference. Result has 614 places, 628 transitions, 7430 flow [2022-11-02 20:50:56,465 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=7105, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7430, PETRI_PLACES=614, PETRI_TRANSITIONS=628} [2022-11-02 20:50:56,465 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 413 predicate places. [2022-11-02 20:50:56,465 INFO L495 AbstractCegarLoop]: Abstraction has has 614 places, 628 transitions, 7430 flow [2022-11-02 20:50:56,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:56,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:56,466 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:50:56,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-02 20:50:56,466 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:50:56,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:56,467 INFO L85 PathProgramCache]: Analyzing trace with hash -604272669, now seen corresponding path program 53 times [2022-11-02 20:50:56,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:56,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498495228] [2022-11-02 20:50:56,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:56,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:57,483 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 20:50:57,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:57,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498495228] [2022-11-02 20:50:57,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498495228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:57,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:57,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:50:57,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534445309] [2022-11-02 20:50:57,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:57,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:50:57,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:57,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:50:57,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:50:57,486 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2022-11-02 20:50:57,488 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 628 transitions, 7430 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:50:57,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:57,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2022-11-02 20:50:57,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:51:01,130 INFO L130 PetriNetUnfolder]: 2582/6708 cut-off events. [2022-11-02 20:51:01,130 INFO L131 PetriNetUnfolder]: For 213682/213692 co-relation queries the response was YES. [2022-11-02 20:51:01,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36156 conditions, 6708 events. 2582/6708 cut-off events. For 213682/213692 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 66821 event pairs, 1404 based on Foata normal form. 1/6429 useless extension candidates. Maximal degree in co-relation 35961. Up to 3850 conditions per place. [2022-11-02 20:51:01,372 INFO L137 encePairwiseOnDemand]: 204/223 looper letters, 440 selfloop transitions, 98 changer transitions 5/678 dead transitions. [2022-11-02 20:51:01,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 629 places, 678 transitions, 9680 flow [2022-11-02 20:51:01,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:51:01,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:51:01,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2777 transitions. [2022-11-02 20:51:01,375 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6918285999003487 [2022-11-02 20:51:01,376 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2777 transitions. [2022-11-02 20:51:01,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2777 transitions. [2022-11-02 20:51:01,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:51:01,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2777 transitions. [2022-11-02 20:51:01,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.27777777777777) internal successors, (2777), 18 states have internal predecessors, (2777), 0 states have call successors, (0), 0 states 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 20:51:01,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:51:01,382 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states 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 20:51:01,382 INFO L175 Difference]: Start difference. First operand has 614 places, 628 transitions, 7430 flow. Second operand 18 states and 2777 transitions. [2022-11-02 20:51:01,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 629 places, 678 transitions, 9680 flow [2022-11-02 20:51:02,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 678 transitions, 9266 flow, removed 76 selfloop flow, removed 16 redundant places. [2022-11-02 20:51:02,814 INFO L231 Difference]: Finished difference. Result has 617 places, 632 transitions, 7398 flow [2022-11-02 20:51:02,814 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=7021, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7398, PETRI_PLACES=617, PETRI_TRANSITIONS=632} [2022-11-02 20:51:02,815 INFO L287 CegarLoopForPetriNet]: 201 programPoint places, 416 predicate places. [2022-11-02 20:51:02,815 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 632 transitions, 7398 flow [2022-11-02 20:51:02,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states 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 20:51:02,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:51:02,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:51:02,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-02 20:51:02,816 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:51:02,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:51:02,816 INFO L85 PathProgramCache]: Analyzing trace with hash -245010801, now seen corresponding path program 54 times [2022-11-02 20:51:02,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:51:02,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175156685] [2022-11-02 20:51:02,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:51:02,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:51:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat