./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy7.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/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_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy7.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/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_976bebc0-3413-4e51-bcdd-b00e9ea0777f/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 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 --- 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 21:00:17,811 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:00:17,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:00:17,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:00:17,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:00:17,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:00:17,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:00:17,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:00:17,884 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:00:17,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:00:17,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:00:17,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:00:17,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:00:17,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:00:17,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:00:17,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:00:17,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:00:17,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:00:17,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:00:17,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:00:17,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:00:17,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:00:17,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:00:17,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:00:17,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:00:17,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:00:17,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:00:17,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:00:17,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:00:17,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:00:17,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:00:17,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:00:17,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:00:17,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:00:17,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:00:17,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:00:17,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:00:17,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:00:17,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:00:17,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:00:17,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:00:17,944 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:00:17,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:00:17,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:00:17,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:00:17,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:00:17,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:00:17,987 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:00:17,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:00:17,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:00:17,988 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:00:17,989 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:00:17,990 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:00:17,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:00:17,990 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:00:17,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:00:17,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:00:17,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:00:17,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:00:17,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:00:17,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:00:17,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:00:17,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:00:17,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:00:17,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:00:17,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:00:17,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:17,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:00:17,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:00:17,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:00:17,995 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:00:17,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:00:17,996 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:00:17,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:00:17,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:00:17,997 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_976bebc0-3413-4e51-bcdd-b00e9ea0777f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89875838ba00841ab95f284d6aeb82a1a762d2b06c5f173202307480dc57b4e4 [2022-11-02 21:00:18,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:00:18,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:00:18,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:00:18,379 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:00:18,380 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:00:18,382 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-02 21:00:18,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/data/6ba230e8c/4676441a25a946fbb81f47ec679eee59/FLAG57819b71d [2022-11-02 21:00:18,949 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:00:18,950 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/sv-benchmarks/c/weaver/test-easy7.wvr.c [2022-11-02 21:00:18,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/data/6ba230e8c/4676441a25a946fbb81f47ec679eee59/FLAG57819b71d [2022-11-02 21:00:19,320 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/data/6ba230e8c/4676441a25a946fbb81f47ec679eee59 [2022-11-02 21:00:19,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:00:19,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:00:19,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:19,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:00:19,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:00:19,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8120e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19, skipping insertion in model container [2022-11-02 21:00:19,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:00:19,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:00:19,570 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_976bebc0-3413-4e51-bcdd-b00e9ea0777f/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-02 21:00:19,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:19,583 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:00:19,604 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_976bebc0-3413-4e51-bcdd-b00e9ea0777f/sv-benchmarks/c/weaver/test-easy7.wvr.c[1872,1885] [2022-11-02 21:00:19,605 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:00:19,618 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:00:19,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19 WrapperNode [2022-11-02 21:00:19,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:00:19,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:19,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:00:19,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:00:19,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,654 INFO L138 Inliner]: procedures = 21, calls = 20, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 54 [2022-11-02 21:00:19,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:00:19,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:00:19,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:00:19,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:00:19,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,665 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,674 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:00:19,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:00:19,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:00:19,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:00:19,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (1/1) ... [2022-11-02 21:00:19,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:00:19,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:00:19,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:00:19,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_976bebc0-3413-4e51-bcdd-b00e9ea0777f/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:00:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:00:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:00:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:00:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:00:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:00:19,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:00:19,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:00:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:00:19,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:00:19,778 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 21:00:19,878 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:00:19,880 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:00:20,130 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:20,142 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:20,142 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:00:20,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:20 BoogieIcfgContainer [2022-11-02 21:00:20,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:20,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:20,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:20,152 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:20,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:00:19" (1/3) ... [2022-11-02 21:00:20,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c185c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:20, skipping insertion in model container [2022-11-02 21:00:20,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:00:19" (2/3) ... [2022-11-02 21:00:20,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c185c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:20, skipping insertion in model container [2022-11-02 21:00:20,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:20" (3/3) ... [2022-11-02 21:00:20,171 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy7.wvr.c [2022-11-02 21:00:20,181 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:00:20,190 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:20,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:00:20,191 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:00:20,273 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 21:00:20,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 94 transitions, 204 flow [2022-11-02 21:00:20,377 INFO L130 PetriNetUnfolder]: 2/92 cut-off events. [2022-11-02 21:00:20,378 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:00:20,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 92 events. 2/92 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2022-11-02 21:00:20,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 94 transitions, 204 flow [2022-11-02 21:00:20,385 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 83 transitions, 178 flow [2022-11-02 21:00:20,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:20,404 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;@7aa035a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:20,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 21:00:20,438 INFO L130 PetriNetUnfolder]: 2/82 cut-off events. [2022-11-02 21:00:20,438 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 21:00:20,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:20,439 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] [2022-11-02 21:00:20,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash 126118782, now seen corresponding path program 1 times [2022-11-02 21:00:20,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:20,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888162436] [2022-11-02 21:00:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:20,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:22,753 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 21:00:22,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:22,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888162436] [2022-11-02 21:00:22,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888162436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:22,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:22,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:00:22,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866767899] [2022-11-02 21:00:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:22,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:00:22,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:22,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:00:22,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:00:22,828 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:22,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 83 transitions, 178 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:22,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:22,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:22,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:24,719 INFO L130 PetriNetUnfolder]: 179/515 cut-off events. [2022-11-02 21:00:24,720 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-02 21:00:24,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 515 events. 179/515 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2119 event pairs, 133 based on Foata normal form. 3/511 useless extension candidates. Maximal degree in co-relation 824. Up to 332 conditions per place. [2022-11-02 21:00:24,733 INFO L137 encePairwiseOnDemand]: 60/94 looper letters, 47 selfloop transitions, 28 changer transitions 34/148 dead transitions. [2022-11-02 21:00:24,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 148 transitions, 535 flow [2022-11-02 21:00:24,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:00:24,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:00:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1583 transitions. [2022-11-02 21:00:24,766 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5613475177304964 [2022-11-02 21:00:24,767 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1583 transitions. [2022-11-02 21:00:24,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1583 transitions. [2022-11-02 21:00:24,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:24,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1583 transitions. [2022-11-02 21:00:24,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.766666666666666) internal successors, (1583), 30 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,801 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,803 INFO L175 Difference]: Start difference. First operand has 88 places, 83 transitions, 178 flow. Second operand 30 states and 1583 transitions. [2022-11-02 21:00:24,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 148 transitions, 535 flow [2022-11-02 21:00:24,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 521 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:00:24,814 INFO L231 Difference]: Finished difference. Result has 136 places, 103 transitions, 360 flow [2022-11-02 21:00:24,817 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=360, PETRI_PLACES=136, PETRI_TRANSITIONS=103} [2022-11-02 21:00:24,821 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 48 predicate places. [2022-11-02 21:00:24,822 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 103 transitions, 360 flow [2022-11-02 21:00:24,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:24,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:24,823 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] [2022-11-02 21:00:24,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:00:24,824 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:24,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:24,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1479619674, now seen corresponding path program 2 times [2022-11-02 21:00:24,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:24,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316570449] [2022-11-02 21:00:24,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:24,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:25,964 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 21:00:25,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:25,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316570449] [2022-11-02 21:00:25,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316570449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:25,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:25,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 21:00:25,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343805705] [2022-11-02 21:00:25,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:25,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:00:25,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:25,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:00:25,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:00:25,971 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:25,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 103 transitions, 360 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:25,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:25,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:25,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:27,719 INFO L130 PetriNetUnfolder]: 202/559 cut-off events. [2022-11-02 21:00:27,720 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2022-11-02 21:00:27,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1546 conditions, 559 events. 202/559 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2507 event pairs, 22 based on Foata normal form. 1/558 useless extension candidates. Maximal degree in co-relation 1515. Up to 329 conditions per place. [2022-11-02 21:00:27,728 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 82 selfloop transitions, 42 changer transitions 36/199 dead transitions. [2022-11-02 21:00:27,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 199 transitions, 1049 flow [2022-11-02 21:00:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 21:00:27,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-02 21:00:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1561 transitions. [2022-11-02 21:00:27,734 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5726338958180485 [2022-11-02 21:00:27,735 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1561 transitions. [2022-11-02 21:00:27,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1561 transitions. [2022-11-02 21:00:27,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:27,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1561 transitions. [2022-11-02 21:00:27,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.827586206896555) internal successors, (1561), 29 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:27,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:27,748 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:27,748 INFO L175 Difference]: Start difference. First operand has 136 places, 103 transitions, 360 flow. Second operand 29 states and 1561 transitions. [2022-11-02 21:00:27,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 199 transitions, 1049 flow [2022-11-02 21:00:27,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 199 transitions, 955 flow, removed 38 selfloop flow, removed 13 redundant places. [2022-11-02 21:00:27,761 INFO L231 Difference]: Finished difference. Result has 156 places, 139 transitions, 637 flow [2022-11-02 21:00:27,761 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=637, PETRI_PLACES=156, PETRI_TRANSITIONS=139} [2022-11-02 21:00:27,762 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 68 predicate places. [2022-11-02 21:00:27,763 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 139 transitions, 637 flow [2022-11-02 21:00:27,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:27,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:27,764 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] [2022-11-02 21:00:27,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:00:27,765 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1215992582, now seen corresponding path program 3 times [2022-11-02 21:00:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:27,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474177155] [2022-11-02 21:00:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:27,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:28,773 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 21:00:28,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:28,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474177155] [2022-11-02 21:00:28,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474177155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:28,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:28,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:00:28,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559358591] [2022-11-02 21:00:28,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:28,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:00:28,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:28,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:00:28,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:00:28,778 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:28,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 139 transitions, 637 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:28,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:28,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:28,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:31,287 INFO L130 PetriNetUnfolder]: 240/645 cut-off events. [2022-11-02 21:00:31,288 INFO L131 PetriNetUnfolder]: For 821/821 co-relation queries the response was YES. [2022-11-02 21:00:31,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 645 events. 240/645 cut-off events. For 821/821 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3026 event pairs, 40 based on Foata normal form. 1/643 useless extension candidates. Maximal degree in co-relation 2220. Up to 401 conditions per place. [2022-11-02 21:00:31,296 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 102 selfloop transitions, 56 changer transitions 43/240 dead transitions. [2022-11-02 21:00:31,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 240 transitions, 1595 flow [2022-11-02 21:00:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 21:00:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-02 21:00:31,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2062 transitions. [2022-11-02 21:00:31,303 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5624659028914348 [2022-11-02 21:00:31,303 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2062 transitions. [2022-11-02 21:00:31,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2062 transitions. [2022-11-02 21:00:31,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:31,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2062 transitions. [2022-11-02 21:00:31,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.87179487179487) internal successors, (2062), 39 states have internal predecessors, (2062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:31,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:31,319 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:31,320 INFO L175 Difference]: Start difference. First operand has 156 places, 139 transitions, 637 flow. Second operand 39 states and 2062 transitions. [2022-11-02 21:00:31,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 240 transitions, 1595 flow [2022-11-02 21:00:31,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 240 transitions, 1454 flow, removed 66 selfloop flow, removed 11 redundant places. [2022-11-02 21:00:31,339 INFO L231 Difference]: Finished difference. Result has 201 places, 182 transitions, 1065 flow [2022-11-02 21:00:31,339 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=1065, PETRI_PLACES=201, PETRI_TRANSITIONS=182} [2022-11-02 21:00:31,340 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 113 predicate places. [2022-11-02 21:00:31,340 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 182 transitions, 1065 flow [2022-11-02 21:00:31,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:31,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:31,341 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] [2022-11-02 21:00:31,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:00:31,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:31,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:31,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1665333946, now seen corresponding path program 4 times [2022-11-02 21:00:31,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:31,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604668565] [2022-11-02 21:00:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:31,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:32,274 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 21:00:32,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:32,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604668565] [2022-11-02 21:00:32,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604668565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:32,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:32,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:00:32,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669911711] [2022-11-02 21:00:32,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:32,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:00:32,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:32,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:00:32,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:00:32,278 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:32,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 182 transitions, 1065 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:32,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:32,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:32,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:33,966 INFO L130 PetriNetUnfolder]: 238/637 cut-off events. [2022-11-02 21:00:33,966 INFO L131 PetriNetUnfolder]: For 1516/1516 co-relation queries the response was YES. [2022-11-02 21:00:33,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2624 conditions, 637 events. 238/637 cut-off events. For 1516/1516 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2969 event pairs, 5 based on Foata normal form. 1/637 useless extension candidates. Maximal degree in co-relation 2564. Up to 403 conditions per place. [2022-11-02 21:00:33,976 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 111 selfloop transitions, 53 changer transitions 44/247 dead transitions. [2022-11-02 21:00:33,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 247 transitions, 1855 flow [2022-11-02 21:00:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 21:00:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-02 21:00:33,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1502 transitions. [2022-11-02 21:00:33,981 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5706686930091185 [2022-11-02 21:00:33,982 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1502 transitions. [2022-11-02 21:00:33,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1502 transitions. [2022-11-02 21:00:33,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:33,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1502 transitions. [2022-11-02 21:00:33,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 53.642857142857146) internal successors, (1502), 28 states have internal predecessors, (1502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:33,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:33,994 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 94.0) internal successors, (2726), 29 states have internal predecessors, (2726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:33,994 INFO L175 Difference]: Start difference. First operand has 201 places, 182 transitions, 1065 flow. Second operand 28 states and 1502 transitions. [2022-11-02 21:00:33,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 247 transitions, 1855 flow [2022-11-02 21:00:34,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 247 transitions, 1633 flow, removed 89 selfloop flow, removed 18 redundant places. [2022-11-02 21:00:34,017 INFO L231 Difference]: Finished difference. Result has 213 places, 187 transitions, 1114 flow [2022-11-02 21:00:34,017 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1114, PETRI_PLACES=213, PETRI_TRANSITIONS=187} [2022-11-02 21:00:34,018 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 125 predicate places. [2022-11-02 21:00:34,018 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 187 transitions, 1114 flow [2022-11-02 21:00:34,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:34,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:34,020 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] [2022-11-02 21:00:34,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:00:34,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:34,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:34,021 INFO L85 PathProgramCache]: Analyzing trace with hash 699227332, now seen corresponding path program 5 times [2022-11-02 21:00:34,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:34,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436338853] [2022-11-02 21:00:34,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:34,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:34,832 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 21:00:34,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:34,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436338853] [2022-11-02 21:00:34,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436338853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:34,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:34,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:00:34,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815953002] [2022-11-02 21:00:34,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:34,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:00:34,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:34,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:00:34,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:00:34,836 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:34,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 187 transitions, 1114 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:34,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:34,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:34,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:36,787 INFO L130 PetriNetUnfolder]: 261/695 cut-off events. [2022-11-02 21:00:36,787 INFO L131 PetriNetUnfolder]: For 1967/1967 co-relation queries the response was YES. [2022-11-02 21:00:36,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2995 conditions, 695 events. 261/695 cut-off events. For 1967/1967 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3378 event pairs, 20 based on Foata normal form. 1/694 useless extension candidates. Maximal degree in co-relation 2932. Up to 446 conditions per place. [2022-11-02 21:00:36,799 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 131 selfloop transitions, 61 changer transitions 43/274 dead transitions. [2022-11-02 21:00:36,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 274 transitions, 2242 flow [2022-11-02 21:00:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:00:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 21:00:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-02 21:00:36,804 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-02 21:00:36,804 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-02 21:00:36,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-02 21:00:36,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:36,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-02 21:00:36,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,817 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,817 INFO L175 Difference]: Start difference. First operand has 213 places, 187 transitions, 1114 flow. Second operand 35 states and 1861 transitions. [2022-11-02 21:00:36,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 274 transitions, 2242 flow [2022-11-02 21:00:36,837 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 274 transitions, 1993 flow, removed 66 selfloop flow, removed 24 redundant places. [2022-11-02 21:00:36,842 INFO L231 Difference]: Finished difference. Result has 234 places, 215 transitions, 1438 flow [2022-11-02 21:00:36,843 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=972, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1438, PETRI_PLACES=234, PETRI_TRANSITIONS=215} [2022-11-02 21:00:36,844 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 146 predicate places. [2022-11-02 21:00:36,844 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 215 transitions, 1438 flow [2022-11-02 21:00:36,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:36,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:36,845 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] [2022-11-02 21:00:36,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:00:36,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:36,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1519473010, now seen corresponding path program 6 times [2022-11-02 21:00:36,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:36,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459692157] [2022-11-02 21:00:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:36,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:37,665 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 21:00:37,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:37,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459692157] [2022-11-02 21:00:37,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459692157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:37,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:37,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:00:37,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649682795] [2022-11-02 21:00:37,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:37,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:00:37,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:37,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:00:37,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:00:37,669 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:37,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 215 transitions, 1438 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:37,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:37,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:37,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:39,416 INFO L130 PetriNetUnfolder]: 265/713 cut-off events. [2022-11-02 21:00:39,416 INFO L131 PetriNetUnfolder]: For 2409/2409 co-relation queries the response was YES. [2022-11-02 21:00:39,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3176 conditions, 713 events. 265/713 cut-off events. For 2409/2409 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3533 event pairs, 19 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 3104. Up to 459 conditions per place. [2022-11-02 21:00:39,428 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 74 changer transitions 43/282 dead transitions. [2022-11-02 21:00:39,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 282 transitions, 2337 flow [2022-11-02 21:00:39,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:00:39,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:00:39,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1657 transitions. [2022-11-02 21:00:39,436 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5686341798215512 [2022-11-02 21:00:39,436 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1657 transitions. [2022-11-02 21:00:39,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1657 transitions. [2022-11-02 21:00:39,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:39,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1657 transitions. [2022-11-02 21:00:39,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.45161290322581) internal successors, (1657), 31 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:39,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:39,454 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:39,454 INFO L175 Difference]: Start difference. First operand has 234 places, 215 transitions, 1438 flow. Second operand 31 states and 1657 transitions. [2022-11-02 21:00:39,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 282 transitions, 2337 flow [2022-11-02 21:00:39,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 282 transitions, 2057 flow, removed 109 selfloop flow, removed 23 redundant places. [2022-11-02 21:00:39,484 INFO L231 Difference]: Finished difference. Result has 245 places, 224 transitions, 1536 flow [2022-11-02 21:00:39,485 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1238, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1536, PETRI_PLACES=245, PETRI_TRANSITIONS=224} [2022-11-02 21:00:39,488 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 157 predicate places. [2022-11-02 21:00:39,488 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 224 transitions, 1536 flow [2022-11-02 21:00:39,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:39,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:39,489 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] [2022-11-02 21:00:39,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:00:39,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:39,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:39,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1541157144, now seen corresponding path program 7 times [2022-11-02 21:00:39,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:39,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20408250] [2022-11-02 21:00:39,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:39,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:40,349 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 21:00:40,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:40,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20408250] [2022-11-02 21:00:40,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20408250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:40,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:40,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:00:40,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31572264] [2022-11-02 21:00:40,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:40,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:00:40,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:40,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:00:40,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:00:40,355 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:40,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 224 transitions, 1536 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:40,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:40,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:40,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:42,285 INFO L130 PetriNetUnfolder]: 264/746 cut-off events. [2022-11-02 21:00:42,285 INFO L131 PetriNetUnfolder]: For 2495/2495 co-relation queries the response was YES. [2022-11-02 21:00:42,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3276 conditions, 746 events. 264/746 cut-off events. For 2495/2495 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3741 event pairs, 27 based on Foata normal form. 1/745 useless extension candidates. Maximal degree in co-relation 3202. Up to 448 conditions per place. [2022-11-02 21:00:42,299 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 124 selfloop transitions, 76 changer transitions 44/283 dead transitions. [2022-11-02 21:00:42,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 283 transitions, 2405 flow [2022-11-02 21:00:42,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:00:42,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:00:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-02 21:00:42,305 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-02 21:00:42,306 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-02 21:00:42,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-02 21:00:42,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:42,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-02 21:00:42,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:42,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:42,319 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:42,319 INFO L175 Difference]: Start difference. First operand has 245 places, 224 transitions, 1536 flow. Second operand 31 states and 1658 transitions. [2022-11-02 21:00:42,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 283 transitions, 2405 flow [2022-11-02 21:00:42,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 283 transitions, 2194 flow, removed 48 selfloop flow, removed 26 redundant places. [2022-11-02 21:00:42,352 INFO L231 Difference]: Finished difference. Result has 255 places, 224 transitions, 1617 flow [2022-11-02 21:00:42,352 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1617, PETRI_PLACES=255, PETRI_TRANSITIONS=224} [2022-11-02 21:00:42,353 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-02 21:00:42,354 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 224 transitions, 1617 flow [2022-11-02 21:00:42,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:42,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:42,355 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] [2022-11-02 21:00:42,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:00:42,356 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:42,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:42,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1783083334, now seen corresponding path program 8 times [2022-11-02 21:00:42,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:42,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203277436] [2022-11-02 21:00:42,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:42,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:43,277 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 21:00:43,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203277436] [2022-11-02 21:00:43,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203277436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:43,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:43,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:00:43,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875853350] [2022-11-02 21:00:43,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:43,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:00:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:43,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:00:43,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:00:43,281 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:43,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 224 transitions, 1617 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:43,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:43,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:43,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:45,190 INFO L130 PetriNetUnfolder]: 260/735 cut-off events. [2022-11-02 21:00:45,190 INFO L131 PetriNetUnfolder]: For 2603/2603 co-relation queries the response was YES. [2022-11-02 21:00:45,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3340 conditions, 735 events. 260/735 cut-off events. For 2603/2603 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3660 event pairs, 33 based on Foata normal form. 1/734 useless extension candidates. Maximal degree in co-relation 3261. Up to 456 conditions per place. [2022-11-02 21:00:45,203 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 126 selfloop transitions, 73 changer transitions 39/277 dead transitions. [2022-11-02 21:00:45,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 277 transitions, 2429 flow [2022-11-02 21:00:45,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:00:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:00:45,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1603 transitions. [2022-11-02 21:00:45,208 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5684397163120567 [2022-11-02 21:00:45,208 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1603 transitions. [2022-11-02 21:00:45,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1603 transitions. [2022-11-02 21:00:45,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:45,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1603 transitions. [2022-11-02 21:00:45,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.43333333333333) internal successors, (1603), 30 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,219 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,220 INFO L175 Difference]: Start difference. First operand has 255 places, 224 transitions, 1617 flow. Second operand 30 states and 1603 transitions. [2022-11-02 21:00:45,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 277 transitions, 2429 flow [2022-11-02 21:00:45,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 277 transitions, 2192 flow, removed 35 selfloop flow, removed 29 redundant places. [2022-11-02 21:00:45,260 INFO L231 Difference]: Finished difference. Result has 256 places, 223 transitions, 1629 flow [2022-11-02 21:00:45,261 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1629, PETRI_PLACES=256, PETRI_TRANSITIONS=223} [2022-11-02 21:00:45,267 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-02 21:00:45,268 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 223 transitions, 1629 flow [2022-11-02 21:00:45,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:45,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:45,270 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] [2022-11-02 21:00:45,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:00:45,270 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:45,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:45,271 INFO L85 PathProgramCache]: Analyzing trace with hash -798716138, now seen corresponding path program 9 times [2022-11-02 21:00:45,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:45,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542894321] [2022-11-02 21:00:45,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:45,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:45,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:46,192 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 21:00:46,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:46,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542894321] [2022-11-02 21:00:46,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542894321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:46,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:46,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 21:00:46,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32897836] [2022-11-02 21:00:46,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:46,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:00:46,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:46,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:00:46,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:00:46,196 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:46,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 223 transitions, 1629 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:46,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:46,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:46,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:48,393 INFO L130 PetriNetUnfolder]: 261/743 cut-off events. [2022-11-02 21:00:48,394 INFO L131 PetriNetUnfolder]: For 2956/2956 co-relation queries the response was YES. [2022-11-02 21:00:48,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3420 conditions, 743 events. 261/743 cut-off events. For 2956/2956 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3707 event pairs, 25 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3343. Up to 460 conditions per place. [2022-11-02 21:00:48,403 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 129 selfloop transitions, 94 changer transitions 29/291 dead transitions. [2022-11-02 21:00:48,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 291 transitions, 2637 flow [2022-11-02 21:00:48,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-02 21:00:48,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-11-02 21:00:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2205 transitions. [2022-11-02 21:00:48,419 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5585106382978723 [2022-11-02 21:00:48,419 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2205 transitions. [2022-11-02 21:00:48,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2205 transitions. [2022-11-02 21:00:48,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:48,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2205 transitions. [2022-11-02 21:00:48,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 52.5) internal successors, (2205), 42 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:48,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:48,434 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 94.0) internal successors, (4042), 43 states have internal predecessors, (4042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:48,434 INFO L175 Difference]: Start difference. First operand has 256 places, 223 transitions, 1629 flow. Second operand 42 states and 2205 transitions. [2022-11-02 21:00:48,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 291 transitions, 2637 flow [2022-11-02 21:00:48,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 291 transitions, 2381 flow, removed 68 selfloop flow, removed 28 redundant places. [2022-11-02 21:00:48,467 INFO L231 Difference]: Finished difference. Result has 273 places, 244 transitions, 1891 flow [2022-11-02 21:00:48,467 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1891, PETRI_PLACES=273, PETRI_TRANSITIONS=244} [2022-11-02 21:00:48,468 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 185 predicate places. [2022-11-02 21:00:48,468 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 244 transitions, 1891 flow [2022-11-02 21:00:48,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:48,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:48,470 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] [2022-11-02 21:00:48,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:00:48,470 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:48,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:48,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1392706964, now seen corresponding path program 10 times [2022-11-02 21:00:48,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:48,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539281014] [2022-11-02 21:00:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:49,185 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 21:00:49,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:49,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539281014] [2022-11-02 21:00:49,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539281014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:49,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:49,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:00:49,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624231278] [2022-11-02 21:00:49,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:49,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:00:49,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:49,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:00:49,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:00:49,188 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:49,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 244 transitions, 1891 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:49,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:49,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:49,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:50,716 INFO L130 PetriNetUnfolder]: 261/745 cut-off events. [2022-11-02 21:00:50,717 INFO L131 PetriNetUnfolder]: For 3283/3283 co-relation queries the response was YES. [2022-11-02 21:00:50,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3603 conditions, 745 events. 261/745 cut-off events. For 3283/3283 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3795 event pairs, 24 based on Foata normal form. 1/744 useless extension candidates. Maximal degree in co-relation 3521. Up to 477 conditions per place. [2022-11-02 21:00:50,726 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 78 changer transitions 32/287 dead transitions. [2022-11-02 21:00:50,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 287 transitions, 2626 flow [2022-11-02 21:00:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:00:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 21:00:50,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1745 transitions. [2022-11-02 21:00:50,742 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5625402965828498 [2022-11-02 21:00:50,742 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1745 transitions. [2022-11-02 21:00:50,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1745 transitions. [2022-11-02 21:00:50,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:50,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1745 transitions. [2022-11-02 21:00:50,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 52.878787878787875) internal successors, (1745), 33 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:50,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:50,764 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:50,765 INFO L175 Difference]: Start difference. First operand has 273 places, 244 transitions, 1891 flow. Second operand 33 states and 1745 transitions. [2022-11-02 21:00:50,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 287 transitions, 2626 flow [2022-11-02 21:00:50,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 287 transitions, 2308 flow, removed 96 selfloop flow, removed 27 redundant places. [2022-11-02 21:00:50,805 INFO L231 Difference]: Finished difference. Result has 280 places, 241 transitions, 1804 flow [2022-11-02 21:00:50,806 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1623, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1804, PETRI_PLACES=280, PETRI_TRANSITIONS=241} [2022-11-02 21:00:50,809 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 192 predicate places. [2022-11-02 21:00:50,810 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 241 transitions, 1804 flow [2022-11-02 21:00:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:50,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:50,811 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] [2022-11-02 21:00:50,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:00:50,811 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:50,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:50,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1406267310, now seen corresponding path program 11 times [2022-11-02 21:00:50,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:50,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945368419] [2022-11-02 21:00:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:50,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:51,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:51,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945368419] [2022-11-02 21:00:51,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945368419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:51,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:51,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:00:51,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736703249] [2022-11-02 21:00:51,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:51,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:00:51,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:51,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:00:51,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:00:51,517 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:51,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 241 transitions, 1804 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:51,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:51,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:51,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:52,990 INFO L130 PetriNetUnfolder]: 251/705 cut-off events. [2022-11-02 21:00:52,991 INFO L131 PetriNetUnfolder]: For 2893/2893 co-relation queries the response was YES. [2022-11-02 21:00:52,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3435 conditions, 705 events. 251/705 cut-off events. For 2893/2893 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3437 event pairs, 22 based on Foata normal form. 1/705 useless extension candidates. Maximal degree in co-relation 3351. Up to 465 conditions per place. [2022-11-02 21:00:53,005 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 134 selfloop transitions, 75 changer transitions 26/274 dead transitions. [2022-11-02 21:00:53,005 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 274 transitions, 2427 flow [2022-11-02 21:00:53,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:00:53,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:00:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1639 transitions. [2022-11-02 21:00:53,009 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5624571036376115 [2022-11-02 21:00:53,009 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1639 transitions. [2022-11-02 21:00:53,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1639 transitions. [2022-11-02 21:00:53,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:53,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1639 transitions. [2022-11-02 21:00:53,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.87096774193548) internal successors, (1639), 31 states have internal predecessors, (1639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:53,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:53,019 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:53,019 INFO L175 Difference]: Start difference. First operand has 280 places, 241 transitions, 1804 flow. Second operand 31 states and 1639 transitions. [2022-11-02 21:00:53,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 274 transitions, 2427 flow [2022-11-02 21:00:53,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 274 transitions, 2189 flow, removed 25 selfloop flow, removed 33 redundant places. [2022-11-02 21:00:53,050 INFO L231 Difference]: Finished difference. Result has 274 places, 234 transitions, 1729 flow [2022-11-02 21:00:53,050 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1582, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1729, PETRI_PLACES=274, PETRI_TRANSITIONS=234} [2022-11-02 21:00:53,051 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 186 predicate places. [2022-11-02 21:00:53,051 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 234 transitions, 1729 flow [2022-11-02 21:00:53,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:53,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:53,052 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] [2022-11-02 21:00:53,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:00:53,052 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:53,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:53,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1692710944, now seen corresponding path program 12 times [2022-11-02 21:00:53,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:53,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723789904] [2022-11-02 21:00:53,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:53,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:53,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:53,770 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 21:00:53,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:53,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723789904] [2022-11-02 21:00:53,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723789904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:53,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:53,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:00:53,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597367524] [2022-11-02 21:00:53,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:53,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:00:53,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:00:53,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:00:53,774 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:53,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 234 transitions, 1729 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:53,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:53,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:53,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:55,307 INFO L130 PetriNetUnfolder]: 244/700 cut-off events. [2022-11-02 21:00:55,308 INFO L131 PetriNetUnfolder]: For 2595/2595 co-relation queries the response was YES. [2022-11-02 21:00:55,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3293 conditions, 700 events. 244/700 cut-off events. For 2595/2595 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3348 event pairs, 32 based on Foata normal form. 1/700 useless extension candidates. Maximal degree in co-relation 3212. Up to 460 conditions per place. [2022-11-02 21:00:55,316 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 130 selfloop transitions, 75 changer transitions 19/263 dead transitions. [2022-11-02 21:00:55,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 263 transitions, 2301 flow [2022-11-02 21:00:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:00:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:00:55,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1633 transitions. [2022-11-02 21:00:55,319 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.560398078242965 [2022-11-02 21:00:55,319 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1633 transitions. [2022-11-02 21:00:55,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1633 transitions. [2022-11-02 21:00:55,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:55,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1633 transitions. [2022-11-02 21:00:55,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.67741935483871) internal successors, (1633), 31 states have internal predecessors, (1633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:55,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:55,349 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:55,349 INFO L175 Difference]: Start difference. First operand has 274 places, 234 transitions, 1729 flow. Second operand 31 states and 1633 transitions. [2022-11-02 21:00:55,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 263 transitions, 2301 flow [2022-11-02 21:00:55,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 263 transitions, 2097 flow, removed 17 selfloop flow, removed 33 redundant places. [2022-11-02 21:00:55,376 INFO L231 Difference]: Finished difference. Result has 267 places, 231 transitions, 1700 flow [2022-11-02 21:00:55,377 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1700, PETRI_PLACES=267, PETRI_TRANSITIONS=231} [2022-11-02 21:00:55,377 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 179 predicate places. [2022-11-02 21:00:55,377 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 231 transitions, 1700 flow [2022-11-02 21:00:55,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:55,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:55,378 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] [2022-11-02 21:00:55,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:00:55,379 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1360263200, now seen corresponding path program 13 times [2022-11-02 21:00:55,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:55,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577869965] [2022-11-02 21:00:55,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,157 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 21:00:56,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:56,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577869965] [2022-11-02 21:00:56,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577869965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:56,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:56,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 21:00:56,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075436042] [2022-11-02 21:00:56,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:56,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:00:56,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:56,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:00:56,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:00:56,161 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:56,163 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 231 transitions, 1700 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:56,163 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:56,163 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:56,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:00:57,715 INFO L130 PetriNetUnfolder]: 238/686 cut-off events. [2022-11-02 21:00:57,716 INFO L131 PetriNetUnfolder]: For 2350/2350 co-relation queries the response was YES. [2022-11-02 21:00:57,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 686 events. 238/686 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3236 event pairs, 35 based on Foata normal form. 1/685 useless extension candidates. Maximal degree in co-relation 3104. Up to 452 conditions per place. [2022-11-02 21:00:57,726 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 123 selfloop transitions, 65 changer transitions 26/253 dead transitions. [2022-11-02 21:00:57,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 253 transitions, 2225 flow [2022-11-02 21:00:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:00:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:00:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1677 transitions. [2022-11-02 21:00:57,729 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5575132978723404 [2022-11-02 21:00:57,729 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1677 transitions. [2022-11-02 21:00:57,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1677 transitions. [2022-11-02 21:00:57,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:00:57,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1677 transitions. [2022-11-02 21:00:57,734 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.40625) internal successors, (1677), 32 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:57,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:57,739 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:57,739 INFO L175 Difference]: Start difference. First operand has 267 places, 231 transitions, 1700 flow. Second operand 32 states and 1677 transitions. [2022-11-02 21:00:57,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 253 transitions, 2225 flow [2022-11-02 21:00:57,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 253 transitions, 2037 flow, removed 9 selfloop flow, removed 31 redundant places. [2022-11-02 21:00:57,763 INFO L231 Difference]: Finished difference. Result has 264 places, 215 transitions, 1558 flow [2022-11-02 21:00:57,764 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1558, PETRI_PLACES=264, PETRI_TRANSITIONS=215} [2022-11-02 21:00:57,765 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 176 predicate places. [2022-11-02 21:00:57,765 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 215 transitions, 1558 flow [2022-11-02 21:00:57,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:57,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:00:57,766 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] [2022-11-02 21:00:57,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:00:57,766 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:00:57,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:57,767 INFO L85 PathProgramCache]: Analyzing trace with hash 6627344, now seen corresponding path program 14 times [2022-11-02 21:00:57,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:57,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261870544] [2022-11-02 21:00:57,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:57,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:57,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:58,396 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 21:00:58,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:58,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261870544] [2022-11-02 21:00:58,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261870544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:58,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:58,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:00:58,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782035032] [2022-11-02 21:00:58,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:58,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:00:58,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:58,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:00:58,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:00:58,399 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:00:58,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 215 transitions, 1558 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:00:58,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:00:58,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:00:58,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:00,073 INFO L130 PetriNetUnfolder]: 260/745 cut-off events. [2022-11-02 21:01:00,074 INFO L131 PetriNetUnfolder]: For 2558/2558 co-relation queries the response was YES. [2022-11-02 21:01:00,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 745 events. 260/745 cut-off events. For 2558/2558 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3752 event pairs, 37 based on Foata normal form. 1/743 useless extension candidates. Maximal degree in co-relation 3287. Up to 436 conditions per place. [2022-11-02 21:01:00,102 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 120 selfloop transitions, 83 changer transitions 42/284 dead transitions. [2022-11-02 21:01:00,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 284 transitions, 2512 flow [2022-11-02 21:01:00,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:01:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 21:01:00,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1861 transitions. [2022-11-02 21:01:00,106 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5656534954407295 [2022-11-02 21:01:00,106 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1861 transitions. [2022-11-02 21:01:00,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1861 transitions. [2022-11-02 21:01:00,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:00,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1861 transitions. [2022-11-02 21:01:00,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.17142857142857) internal successors, (1861), 35 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,116 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,117 INFO L175 Difference]: Start difference. First operand has 264 places, 215 transitions, 1558 flow. Second operand 35 states and 1861 transitions. [2022-11-02 21:01:00,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 284 transitions, 2512 flow [2022-11-02 21:01:00,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 284 transitions, 2221 flow, removed 45 selfloop flow, removed 29 redundant places. [2022-11-02 21:01:00,142 INFO L231 Difference]: Finished difference. Result has 256 places, 224 transitions, 1654 flow [2022-11-02 21:01:00,143 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1654, PETRI_PLACES=256, PETRI_TRANSITIONS=224} [2022-11-02 21:01:00,144 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 168 predicate places. [2022-11-02 21:01:00,144 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 224 transitions, 1654 flow [2022-11-02 21:01:00,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:00,145 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] [2022-11-02 21:01:00,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:01:00,145 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:00,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1409575526, now seen corresponding path program 15 times [2022-11-02 21:01:00,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:00,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323640731] [2022-11-02 21:01:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:00,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:00,797 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 21:01:00,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:00,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323640731] [2022-11-02 21:01:00,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323640731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:00,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:00,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:00,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358636900] [2022-11-02 21:01:00,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:00,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:00,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:00,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:00,804 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:00,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 224 transitions, 1654 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:00,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:00,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:00,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:02,421 INFO L130 PetriNetUnfolder]: 272/762 cut-off events. [2022-11-02 21:01:02,422 INFO L131 PetriNetUnfolder]: For 3720/3720 co-relation queries the response was YES. [2022-11-02 21:01:02,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3673 conditions, 762 events. 272/762 cut-off events. For 3720/3720 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3706 event pairs, 24 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3596. Up to 458 conditions per place. [2022-11-02 21:01:02,435 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 138 selfloop transitions, 101 changer transitions 22/300 dead transitions. [2022-11-02 21:01:02,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 300 transitions, 2850 flow [2022-11-02 21:01:02,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:01:02,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:01:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1818 transitions. [2022-11-02 21:01:02,440 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5688360450563203 [2022-11-02 21:01:02,440 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1818 transitions. [2022-11-02 21:01:02,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1818 transitions. [2022-11-02 21:01:02,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:02,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1818 transitions. [2022-11-02 21:01:02,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.470588235294116) internal successors, (1818), 34 states have internal predecessors, (1818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:02,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:02,448 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:02,448 INFO L175 Difference]: Start difference. First operand has 256 places, 224 transitions, 1654 flow. Second operand 34 states and 1818 transitions. [2022-11-02 21:01:02,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 300 transitions, 2850 flow [2022-11-02 21:01:02,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 300 transitions, 2572 flow, removed 73 selfloop flow, removed 29 redundant places. [2022-11-02 21:01:02,482 INFO L231 Difference]: Finished difference. Result has 260 places, 251 transitions, 2016 flow [2022-11-02 21:01:02,483 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2016, PETRI_PLACES=260, PETRI_TRANSITIONS=251} [2022-11-02 21:01:02,483 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 172 predicate places. [2022-11-02 21:01:02,484 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 251 transitions, 2016 flow [2022-11-02 21:01:02,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:02,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:02,484 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] [2022-11-02 21:01:02,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:01:02,485 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:02,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2084111022, now seen corresponding path program 16 times [2022-11-02 21:01:02,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:02,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646757370] [2022-11-02 21:01:02,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:02,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,103 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 21:01:03,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:03,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646757370] [2022-11-02 21:01:03,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646757370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:03,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:03,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 21:01:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710299511] [2022-11-02 21:01:03,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:03,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:01:03,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:03,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:01:03,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:01:03,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:03,106 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 251 transitions, 2016 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:03,106 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:03,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:03,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:04,496 INFO L130 PetriNetUnfolder]: 280/785 cut-off events. [2022-11-02 21:01:04,497 INFO L131 PetriNetUnfolder]: For 3938/3938 co-relation queries the response was YES. [2022-11-02 21:01:04,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3914 conditions, 785 events. 280/785 cut-off events. For 3938/3938 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3936 event pairs, 25 based on Foata normal form. 1/783 useless extension candidates. Maximal degree in co-relation 3839. Up to 487 conditions per place. [2022-11-02 21:01:04,512 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 89 changer transitions 29/308 dead transitions. [2022-11-02 21:01:04,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 308 transitions, 3040 flow [2022-11-02 21:01:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 21:01:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-02 21:01:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1560 transitions. [2022-11-02 21:01:04,515 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5722670579603815 [2022-11-02 21:01:04,516 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1560 transitions. [2022-11-02 21:01:04,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1560 transitions. [2022-11-02 21:01:04,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:04,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1560 transitions. [2022-11-02 21:01:04,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.793103448275865) internal successors, (1560), 29 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:04,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:04,533 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:04,534 INFO L175 Difference]: Start difference. First operand has 260 places, 251 transitions, 2016 flow. Second operand 29 states and 1560 transitions. [2022-11-02 21:01:04,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 308 transitions, 3040 flow [2022-11-02 21:01:04,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 308 transitions, 2719 flow, removed 122 selfloop flow, removed 14 redundant places. [2022-11-02 21:01:04,573 INFO L231 Difference]: Finished difference. Result has 278 places, 259 transitions, 2077 flow [2022-11-02 21:01:04,574 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1743, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2077, PETRI_PLACES=278, PETRI_TRANSITIONS=259} [2022-11-02 21:01:04,574 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 190 predicate places. [2022-11-02 21:01:04,575 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 259 transitions, 2077 flow [2022-11-02 21:01:04,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:04,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:04,575 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] [2022-11-02 21:01:04,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:01:04,576 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:04,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:04,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2051877010, now seen corresponding path program 17 times [2022-11-02 21:01:04,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:04,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931222573] [2022-11-02 21:01:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:05,220 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 21:01:05,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:05,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931222573] [2022-11-02 21:01:05,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931222573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:05,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:05,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:05,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208052524] [2022-11-02 21:01:05,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:05,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:05,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:05,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:05,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:05,223 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:05,223 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 259 transitions, 2077 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:05,224 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:05,224 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:05,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:06,685 INFO L130 PetriNetUnfolder]: 278/780 cut-off events. [2022-11-02 21:01:06,685 INFO L131 PetriNetUnfolder]: For 4207/4207 co-relation queries the response was YES. [2022-11-02 21:01:06,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3994 conditions, 780 events. 278/780 cut-off events. For 4207/4207 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3909 event pairs, 25 based on Foata normal form. 1/778 useless extension candidates. Maximal degree in co-relation 3910. Up to 483 conditions per place. [2022-11-02 21:01:06,696 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 149 selfloop transitions, 85 changer transitions 35/308 dead transitions. [2022-11-02 21:01:06,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 308 transitions, 3007 flow [2022-11-02 21:01:06,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:01:06,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:01:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1658 transitions. [2022-11-02 21:01:06,703 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5689773507206589 [2022-11-02 21:01:06,703 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1658 transitions. [2022-11-02 21:01:06,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1658 transitions. [2022-11-02 21:01:06,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:06,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1658 transitions. [2022-11-02 21:01:06,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.483870967741936) internal successors, (1658), 31 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:06,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:06,711 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:06,712 INFO L175 Difference]: Start difference. First operand has 278 places, 259 transitions, 2077 flow. Second operand 31 states and 1658 transitions. [2022-11-02 21:01:06,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 308 transitions, 3007 flow [2022-11-02 21:01:06,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 308 transitions, 2721 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-11-02 21:01:06,750 INFO L231 Difference]: Finished difference. Result has 286 places, 256 transitions, 2053 flow [2022-11-02 21:01:06,750 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1831, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2053, PETRI_PLACES=286, PETRI_TRANSITIONS=256} [2022-11-02 21:01:06,751 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-02 21:01:06,751 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 256 transitions, 2053 flow [2022-11-02 21:01:06,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:06,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:06,752 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] [2022-11-02 21:01:06,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:01:06,752 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:06,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:06,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1742136890, now seen corresponding path program 18 times [2022-11-02 21:01:06,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:06,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828060888] [2022-11-02 21:01:06,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:06,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:07,366 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 21:01:07,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:07,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828060888] [2022-11-02 21:01:07,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828060888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:07,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:07,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875967703] [2022-11-02 21:01:07,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:07,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:07,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:07,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:07,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:07,369 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:07,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 256 transitions, 2053 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:07,370 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:07,370 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:07,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:08,851 INFO L130 PetriNetUnfolder]: 274/768 cut-off events. [2022-11-02 21:01:08,851 INFO L131 PetriNetUnfolder]: For 3948/3948 co-relation queries the response was YES. [2022-11-02 21:01:08,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3953 conditions, 768 events. 274/768 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 3816 event pairs, 24 based on Foata normal form. 1/766 useless extension candidates. Maximal degree in co-relation 3868. Up to 481 conditions per place. [2022-11-02 21:01:08,863 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 92 changer transitions 26/304 dead transitions. [2022-11-02 21:01:08,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 304 transitions, 2973 flow [2022-11-02 21:01:08,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:01:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:01:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1606 transitions. [2022-11-02 21:01:08,867 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5695035460992908 [2022-11-02 21:01:08,867 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1606 transitions. [2022-11-02 21:01:08,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1606 transitions. [2022-11-02 21:01:08,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:08,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1606 transitions. [2022-11-02 21:01:08,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.53333333333333) internal successors, (1606), 30 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:08,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:08,874 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:08,875 INFO L175 Difference]: Start difference. First operand has 286 places, 256 transitions, 2053 flow. Second operand 30 states and 1606 transitions. [2022-11-02 21:01:08,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 304 transitions, 2973 flow [2022-11-02 21:01:08,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 304 transitions, 2719 flow, removed 24 selfloop flow, removed 28 redundant places. [2022-11-02 21:01:08,910 INFO L231 Difference]: Finished difference. Result has 286 places, 259 transitions, 2104 flow [2022-11-02 21:01:08,911 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1826, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2104, PETRI_PLACES=286, PETRI_TRANSITIONS=259} [2022-11-02 21:01:08,911 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 198 predicate places. [2022-11-02 21:01:08,911 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 259 transitions, 2104 flow [2022-11-02 21:01:08,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:08,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:08,912 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] [2022-11-02 21:01:08,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:01:08,913 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:08,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:08,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2093389318, now seen corresponding path program 19 times [2022-11-02 21:01:08,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:08,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046826080] [2022-11-02 21:01:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:08,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:09,506 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 21:01:09,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:09,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046826080] [2022-11-02 21:01:09,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046826080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:09,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:09,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:09,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502913310] [2022-11-02 21:01:09,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:09,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:09,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:09,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:09,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:09,509 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:09,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 259 transitions, 2104 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:09,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:09,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:09,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:10,861 INFO L130 PetriNetUnfolder]: 280/787 cut-off events. [2022-11-02 21:01:10,861 INFO L131 PetriNetUnfolder]: For 4356/4356 co-relation queries the response was YES. [2022-11-02 21:01:10,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4093 conditions, 787 events. 280/787 cut-off events. For 4356/4356 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3990 event pairs, 26 based on Foata normal form. 1/784 useless extension candidates. Maximal degree in co-relation 4008. Up to 511 conditions per place. [2022-11-02 21:01:10,869 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 165 selfloop transitions, 78 changer transitions 30/312 dead transitions. [2022-11-02 21:01:10,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 312 transitions, 3125 flow [2022-11-02 21:01:10,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:01:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:01:10,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1651 transitions. [2022-11-02 21:01:10,873 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5665751544269046 [2022-11-02 21:01:10,873 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1651 transitions. [2022-11-02 21:01:10,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1651 transitions. [2022-11-02 21:01:10,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:10,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1651 transitions. [2022-11-02 21:01:10,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.25806451612903) internal successors, (1651), 31 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:10,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:10,881 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:10,881 INFO L175 Difference]: Start difference. First operand has 286 places, 259 transitions, 2104 flow. Second operand 31 states and 1651 transitions. [2022-11-02 21:01:10,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 312 transitions, 3125 flow [2022-11-02 21:01:10,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 312 transitions, 2890 flow, removed 47 selfloop flow, removed 26 redundant places. [2022-11-02 21:01:10,917 INFO L231 Difference]: Finished difference. Result has 297 places, 266 transitions, 2244 flow [2022-11-02 21:01:10,918 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2244, PETRI_PLACES=297, PETRI_TRANSITIONS=266} [2022-11-02 21:01:10,918 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 209 predicate places. [2022-11-02 21:01:10,918 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 266 transitions, 2244 flow [2022-11-02 21:01:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:10,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:10,919 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] [2022-11-02 21:01:10,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:01:10,919 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:10,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:10,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1511959520, now seen corresponding path program 20 times [2022-11-02 21:01:10,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:10,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261991113] [2022-11-02 21:01:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:10,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:11,530 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 21:01:11,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:11,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261991113] [2022-11-02 21:01:11,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261991113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:11,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:11,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:01:11,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014673061] [2022-11-02 21:01:11,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:11,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:11,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:11,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:11,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:11,534 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:11,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 266 transitions, 2244 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:11,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:11,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:11,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:13,000 INFO L130 PetriNetUnfolder]: 278/781 cut-off events. [2022-11-02 21:01:13,001 INFO L131 PetriNetUnfolder]: For 4488/4488 co-relation queries the response was YES. [2022-11-02 21:01:13,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4150 conditions, 781 events. 278/781 cut-off events. For 4488/4488 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3957 event pairs, 23 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 4059. Up to 503 conditions per place. [2022-11-02 21:01:13,008 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 155 selfloop transitions, 86 changer transitions 30/310 dead transitions. [2022-11-02 21:01:13,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 310 transitions, 3174 flow [2022-11-02 21:01:13,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:01:13,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:01:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1701 transitions. [2022-11-02 21:01:13,011 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5654920212765957 [2022-11-02 21:01:13,011 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1701 transitions. [2022-11-02 21:01:13,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1701 transitions. [2022-11-02 21:01:13,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:13,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1701 transitions. [2022-11-02 21:01:13,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.15625) internal successors, (1701), 32 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,034 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,034 INFO L175 Difference]: Start difference. First operand has 297 places, 266 transitions, 2244 flow. Second operand 32 states and 1701 transitions. [2022-11-02 21:01:13,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 310 transitions, 3174 flow [2022-11-02 21:01:13,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 310 transitions, 2977 flow, removed 39 selfloop flow, removed 26 redundant places. [2022-11-02 21:01:13,075 INFO L231 Difference]: Finished difference. Result has 304 places, 264 transitions, 2304 flow [2022-11-02 21:01:13,075 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2304, PETRI_PLACES=304, PETRI_TRANSITIONS=264} [2022-11-02 21:01:13,076 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 216 predicate places. [2022-11-02 21:01:13,076 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 264 transitions, 2304 flow [2022-11-02 21:01:13,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:13,077 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] [2022-11-02 21:01:13,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:01:13,077 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:13,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:13,078 INFO L85 PathProgramCache]: Analyzing trace with hash 842328908, now seen corresponding path program 21 times [2022-11-02 21:01:13,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:13,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253295319] [2022-11-02 21:01:13,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:13,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:13,691 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 21:01:13,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:13,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253295319] [2022-11-02 21:01:13,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253295319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:13,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:13,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:13,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671180042] [2022-11-02 21:01:13,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:13,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:13,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:13,694 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:13,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 264 transitions, 2304 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:13,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:13,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:13,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:15,139 INFO L130 PetriNetUnfolder]: 274/774 cut-off events. [2022-11-02 21:01:15,140 INFO L131 PetriNetUnfolder]: For 4679/4679 co-relation queries the response was YES. [2022-11-02 21:01:15,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 774 events. 274/774 cut-off events. For 4679/4679 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3856 event pairs, 21 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 4077. Up to 472 conditions per place. [2022-11-02 21:01:15,147 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 151 selfloop transitions, 98 changer transitions 26/314 dead transitions. [2022-11-02 21:01:15,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 314 transitions, 3258 flow [2022-11-02 21:01:15,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:01:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:01:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-02 21:01:15,150 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-02 21:01:15,150 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-02 21:01:15,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-02 21:01:15,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:15,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-02 21:01:15,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:15,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:15,157 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:15,158 INFO L175 Difference]: Start difference. First operand has 304 places, 264 transitions, 2304 flow. Second operand 31 states and 1659 transitions. [2022-11-02 21:01:15,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 314 transitions, 3258 flow [2022-11-02 21:01:15,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 314 transitions, 3017 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-11-02 21:01:15,195 INFO L231 Difference]: Finished difference. Result has 305 places, 267 transitions, 2388 flow [2022-11-02 21:01:15,195 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2109, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2388, PETRI_PLACES=305, PETRI_TRANSITIONS=267} [2022-11-02 21:01:15,196 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 217 predicate places. [2022-11-02 21:01:15,196 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 267 transitions, 2388 flow [2022-11-02 21:01:15,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:15,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:15,197 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] [2022-11-02 21:01:15,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 21:01:15,197 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:15,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1766688790, now seen corresponding path program 22 times [2022-11-02 21:01:15,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:15,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582086359] [2022-11-02 21:01:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,866 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 21:01:15,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:15,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582086359] [2022-11-02 21:01:15,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582086359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:15,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:15,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:01:15,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595627507] [2022-11-02 21:01:15,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:15,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:01:15,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:15,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:01:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:01:15,869 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:15,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 267 transitions, 2388 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:15,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:15,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:15,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:17,571 INFO L130 PetriNetUnfolder]: 275/781 cut-off events. [2022-11-02 21:01:17,571 INFO L131 PetriNetUnfolder]: For 4192/4192 co-relation queries the response was YES. [2022-11-02 21:01:17,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4232 conditions, 781 events. 275/781 cut-off events. For 4192/4192 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3923 event pairs, 22 based on Foata normal form. 1/779 useless extension candidates. Maximal degree in co-relation 4138. Up to 505 conditions per place. [2022-11-02 21:01:17,578 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 159 selfloop transitions, 91 changer transitions 22/311 dead transitions. [2022-11-02 21:01:17,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 311 transitions, 3282 flow [2022-11-02 21:01:17,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:01:17,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:01:17,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1798 transitions. [2022-11-02 21:01:17,584 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5625782227784731 [2022-11-02 21:01:17,584 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1798 transitions. [2022-11-02 21:01:17,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1798 transitions. [2022-11-02 21:01:17,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:17,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1798 transitions. [2022-11-02 21:01:17,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.88235294117647) internal successors, (1798), 34 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:17,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:17,592 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:17,592 INFO L175 Difference]: Start difference. First operand has 305 places, 267 transitions, 2388 flow. Second operand 34 states and 1798 transitions. [2022-11-02 21:01:17,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 311 transitions, 3282 flow [2022-11-02 21:01:17,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 311 transitions, 3014 flow, removed 32 selfloop flow, removed 28 redundant places. [2022-11-02 21:01:17,635 INFO L231 Difference]: Finished difference. Result has 313 places, 272 transitions, 2453 flow [2022-11-02 21:01:17,635 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2169, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2453, PETRI_PLACES=313, PETRI_TRANSITIONS=272} [2022-11-02 21:01:17,636 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 225 predicate places. [2022-11-02 21:01:17,636 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 272 transitions, 2453 flow [2022-11-02 21:01:17,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:17,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:17,637 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] [2022-11-02 21:01:17,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 21:01:17,637 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:17,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:17,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1582155802, now seen corresponding path program 23 times [2022-11-02 21:01:17,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:17,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010910402] [2022-11-02 21:01:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:17,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:18,266 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 21:01:18,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:18,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010910402] [2022-11-02 21:01:18,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010910402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:18,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:18,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:18,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801327198] [2022-11-02 21:01:18,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:18,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:18,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:18,269 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:18,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 272 transitions, 2453 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:18,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:18,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:18,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:19,717 INFO L130 PetriNetUnfolder]: 276/788 cut-off events. [2022-11-02 21:01:19,717 INFO L131 PetriNetUnfolder]: For 4686/4686 co-relation queries the response was YES. [2022-11-02 21:01:19,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4329 conditions, 788 events. 276/788 cut-off events. For 4686/4686 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4016 event pairs, 18 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 4234. Up to 503 conditions per place. [2022-11-02 21:01:19,725 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 161 selfloop transitions, 98 changer transitions 21/319 dead transitions. [2022-11-02 21:01:19,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 319 transitions, 3414 flow [2022-11-02 21:01:19,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:01:19,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:01:19,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1706 transitions. [2022-11-02 21:01:19,728 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.567154255319149 [2022-11-02 21:01:19,728 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1706 transitions. [2022-11-02 21:01:19,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1706 transitions. [2022-11-02 21:01:19,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:19,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1706 transitions. [2022-11-02 21:01:19,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.3125) internal successors, (1706), 32 states have internal predecessors, (1706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:19,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:19,736 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:19,737 INFO L175 Difference]: Start difference. First operand has 313 places, 272 transitions, 2453 flow. Second operand 32 states and 1706 transitions. [2022-11-02 21:01:19,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 319 transitions, 3414 flow [2022-11-02 21:01:19,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 319 transitions, 3211 flow, removed 37 selfloop flow, removed 27 redundant places. [2022-11-02 21:01:19,782 INFO L231 Difference]: Finished difference. Result has 322 places, 278 transitions, 2613 flow [2022-11-02 21:01:19,783 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2613, PETRI_PLACES=322, PETRI_TRANSITIONS=278} [2022-11-02 21:01:19,783 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 234 predicate places. [2022-11-02 21:01:19,783 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 278 transitions, 2613 flow [2022-11-02 21:01:19,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:19,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:19,784 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] [2022-11-02 21:01:19,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 21:01:19,787 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:19,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:19,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1449125434, now seen corresponding path program 24 times [2022-11-02 21:01:19,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:19,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045234008] [2022-11-02 21:01:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:19,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:20,351 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 21:01:20,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:20,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045234008] [2022-11-02 21:01:20,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045234008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:20,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:20,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:20,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727935760] [2022-11-02 21:01:20,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:20,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:20,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:20,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:20,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:20,355 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:20,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 278 transitions, 2613 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:20,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:20,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:20,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:21,726 INFO L130 PetriNetUnfolder]: 269/789 cut-off events. [2022-11-02 21:01:21,727 INFO L131 PetriNetUnfolder]: For 4920/4920 co-relation queries the response was YES. [2022-11-02 21:01:21,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4392 conditions, 789 events. 269/789 cut-off events. For 4920/4920 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4039 event pairs, 22 based on Foata normal form. 1/787 useless extension candidates. Maximal degree in co-relation 4291. Up to 507 conditions per place. [2022-11-02 21:01:21,737 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 92 changer transitions 18/311 dead transitions. [2022-11-02 21:01:21,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 311 transitions, 3355 flow [2022-11-02 21:01:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:01:21,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:01:21,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1597 transitions. [2022-11-02 21:01:21,740 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5663120567375887 [2022-11-02 21:01:21,740 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1597 transitions. [2022-11-02 21:01:21,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1597 transitions. [2022-11-02 21:01:21,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:21,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1597 transitions. [2022-11-02 21:01:21,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.233333333333334) internal successors, (1597), 30 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:21,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:21,744 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:21,745 INFO L175 Difference]: Start difference. First operand has 322 places, 278 transitions, 2613 flow. Second operand 30 states and 1597 transitions. [2022-11-02 21:01:21,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 311 transitions, 3355 flow [2022-11-02 21:01:21,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 311 transitions, 3165 flow, removed 32 selfloop flow, removed 25 redundant places. [2022-11-02 21:01:21,796 INFO L231 Difference]: Finished difference. Result has 327 places, 275 transitions, 2626 flow [2022-11-02 21:01:21,796 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2431, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2626, PETRI_PLACES=327, PETRI_TRANSITIONS=275} [2022-11-02 21:01:21,796 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 239 predicate places. [2022-11-02 21:01:21,797 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 275 transitions, 2626 flow [2022-11-02 21:01:21,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:21,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:21,797 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] [2022-11-02 21:01:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 21:01:21,797 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:21,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:21,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1448700548, now seen corresponding path program 25 times [2022-11-02 21:01:21,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:21,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717813586] [2022-11-02 21:01:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:22,432 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 21:01:22,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:22,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717813586] [2022-11-02 21:01:22,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717813586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:22,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:22,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:01:22,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835861982] [2022-11-02 21:01:22,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:22,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:22,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:22,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:22,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:22,435 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:22,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 275 transitions, 2626 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:22,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:22,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:22,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:24,031 INFO L130 PetriNetUnfolder]: 275/794 cut-off events. [2022-11-02 21:01:24,031 INFO L131 PetriNetUnfolder]: For 5310/5310 co-relation queries the response was YES. [2022-11-02 21:01:24,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4569 conditions, 794 events. 275/794 cut-off events. For 5310/5310 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4059 event pairs, 20 based on Foata normal form. 1/792 useless extension candidates. Maximal degree in co-relation 4466. Up to 498 conditions per place. [2022-11-02 21:01:24,040 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 156 selfloop transitions, 105 changer transitions 21/321 dead transitions. [2022-11-02 21:01:24,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 321 transitions, 3615 flow [2022-11-02 21:01:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:01:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 21:01:24,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1756 transitions. [2022-11-02 21:01:24,050 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.56608639587363 [2022-11-02 21:01:24,050 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1756 transitions. [2022-11-02 21:01:24,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1756 transitions. [2022-11-02 21:01:24,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:24,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1756 transitions. [2022-11-02 21:01:24,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.21212121212121) internal successors, (1756), 33 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,059 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,059 INFO L175 Difference]: Start difference. First operand has 327 places, 275 transitions, 2626 flow. Second operand 33 states and 1756 transitions. [2022-11-02 21:01:24,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 321 transitions, 3615 flow [2022-11-02 21:01:24,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 321 transitions, 3349 flow, removed 21 selfloop flow, removed 31 redundant places. [2022-11-02 21:01:24,119 INFO L231 Difference]: Finished difference. Result has 331 places, 280 transitions, 2745 flow [2022-11-02 21:01:24,119 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2745, PETRI_PLACES=331, PETRI_TRANSITIONS=280} [2022-11-02 21:01:24,120 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-02 21:01:24,120 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 280 transitions, 2745 flow [2022-11-02 21:01:24,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:24,121 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] [2022-11-02 21:01:24,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 21:01:24,121 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:24,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:24,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1828231274, now seen corresponding path program 26 times [2022-11-02 21:01:24,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:24,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374736977] [2022-11-02 21:01:24,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:24,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:24,849 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 21:01:24,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374736977] [2022-11-02 21:01:24,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374736977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:24,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:24,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:01:24,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254837037] [2022-11-02 21:01:24,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:24,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:01:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:24,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:01:24,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:01:24,852 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:24,853 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 280 transitions, 2745 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:24,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:24,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:24,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:26,518 INFO L130 PetriNetUnfolder]: 268/779 cut-off events. [2022-11-02 21:01:26,518 INFO L131 PetriNetUnfolder]: For 5636/5636 co-relation queries the response was YES. [2022-11-02 21:01:26,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4563 conditions, 779 events. 268/779 cut-off events. For 5636/5636 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4019 event pairs, 18 based on Foata normal form. 1/776 useless extension candidates. Maximal degree in co-relation 4457. Up to 522 conditions per place. [2022-11-02 21:01:26,528 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 168 selfloop transitions, 82 changer transitions 21/310 dead transitions. [2022-11-02 21:01:26,528 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 310 transitions, 3465 flow [2022-11-02 21:01:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:01:26,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:01:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1689 transitions. [2022-11-02 21:01:26,531 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5615026595744681 [2022-11-02 21:01:26,531 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1689 transitions. [2022-11-02 21:01:26,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1689 transitions. [2022-11-02 21:01:26,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:26,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1689 transitions. [2022-11-02 21:01:26,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.78125) internal successors, (1689), 32 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,539 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,539 INFO L175 Difference]: Start difference. First operand has 331 places, 280 transitions, 2745 flow. Second operand 32 states and 1689 transitions. [2022-11-02 21:01:26,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 310 transitions, 3465 flow [2022-11-02 21:01:26,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 310 transitions, 3251 flow, removed 42 selfloop flow, removed 26 redundant places. [2022-11-02 21:01:26,602 INFO L231 Difference]: Finished difference. Result has 337 places, 274 transitions, 2648 flow [2022-11-02 21:01:26,602 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2648, PETRI_PLACES=337, PETRI_TRANSITIONS=274} [2022-11-02 21:01:26,603 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 249 predicate places. [2022-11-02 21:01:26,603 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 274 transitions, 2648 flow [2022-11-02 21:01:26,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:26,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:26,604 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] [2022-11-02 21:01:26,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 21:01:26,604 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:26,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:26,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1005068040, now seen corresponding path program 27 times [2022-11-02 21:01:26,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:26,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948773376] [2022-11-02 21:01:26,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:26,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:27,266 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 21:01:27,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:27,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948773376] [2022-11-02 21:01:27,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948773376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:27,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:27,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 21:01:27,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528338324] [2022-11-02 21:01:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:27,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:01:27,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:01:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:01:27,270 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:27,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 274 transitions, 2648 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:27,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:27,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:27,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:28,971 INFO L130 PetriNetUnfolder]: 263/763 cut-off events. [2022-11-02 21:01:28,972 INFO L131 PetriNetUnfolder]: For 5128/5128 co-relation queries the response was YES. [2022-11-02 21:01:28,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4457 conditions, 763 events. 263/763 cut-off events. For 5128/5128 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3857 event pairs, 22 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 4354. Up to 514 conditions per place. [2022-11-02 21:01:28,987 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 165 selfloop transitions, 84 changer transitions 17/305 dead transitions. [2022-11-02 21:01:28,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 305 transitions, 3420 flow [2022-11-02 21:01:28,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:01:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 21:01:28,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1837 transitions. [2022-11-02 21:01:28,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5583586626139818 [2022-11-02 21:01:28,990 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1837 transitions. [2022-11-02 21:01:28,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1837 transitions. [2022-11-02 21:01:28,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:28,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1837 transitions. [2022-11-02 21:01:28,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.48571428571429) internal successors, (1837), 35 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:28,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:28,998 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:28,998 INFO L175 Difference]: Start difference. First operand has 337 places, 274 transitions, 2648 flow. Second operand 35 states and 1837 transitions. [2022-11-02 21:01:28,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 305 transitions, 3420 flow [2022-11-02 21:01:29,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 305 transitions, 3109 flow, removed 18 selfloop flow, removed 36 redundant places. [2022-11-02 21:01:29,056 INFO L231 Difference]: Finished difference. Result has 334 places, 273 transitions, 2558 flow [2022-11-02 21:01:29,057 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2356, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=2558, PETRI_PLACES=334, PETRI_TRANSITIONS=273} [2022-11-02 21:01:29,057 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 246 predicate places. [2022-11-02 21:01:29,058 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 273 transitions, 2558 flow [2022-11-02 21:01:29,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:29,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:29,058 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] [2022-11-02 21:01:29,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 21:01:29,059 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:29,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:29,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1837290896, now seen corresponding path program 28 times [2022-11-02 21:01:29,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:29,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298660604] [2022-11-02 21:01:29,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:29,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:29,668 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 21:01:29,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:29,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298660604] [2022-11-02 21:01:29,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298660604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:29,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:29,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:01:29,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416901787] [2022-11-02 21:01:29,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:29,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:29,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:29,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:29,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:29,672 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:29,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 273 transitions, 2558 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:29,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:29,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:29,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:31,232 INFO L130 PetriNetUnfolder]: 262/761 cut-off events. [2022-11-02 21:01:31,233 INFO L131 PetriNetUnfolder]: For 5102/5102 co-relation queries the response was YES. [2022-11-02 21:01:31,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4334 conditions, 761 events. 262/761 cut-off events. For 5102/5102 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3837 event pairs, 21 based on Foata normal form. 1/759 useless extension candidates. Maximal degree in co-relation 4233. Up to 493 conditions per place. [2022-11-02 21:01:31,242 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 155 selfloop transitions, 94 changer transitions 18/306 dead transitions. [2022-11-02 21:01:31,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 306 transitions, 3298 flow [2022-11-02 21:01:31,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:01:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:01:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1646 transitions. [2022-11-02 21:01:31,249 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5648592999313659 [2022-11-02 21:01:31,249 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1646 transitions. [2022-11-02 21:01:31,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1646 transitions. [2022-11-02 21:01:31,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:31,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1646 transitions. [2022-11-02 21:01:31,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.096774193548384) internal successors, (1646), 31 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,255 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,256 INFO L175 Difference]: Start difference. First operand has 334 places, 273 transitions, 2558 flow. Second operand 31 states and 1646 transitions. [2022-11-02 21:01:31,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 306 transitions, 3298 flow [2022-11-02 21:01:31,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 306 transitions, 3069 flow, removed 26 selfloop flow, removed 34 redundant places. [2022-11-02 21:01:31,311 INFO L231 Difference]: Finished difference. Result has 330 places, 270 transitions, 2539 flow [2022-11-02 21:01:31,311 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2341, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2539, PETRI_PLACES=330, PETRI_TRANSITIONS=270} [2022-11-02 21:01:31,312 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 242 predicate places. [2022-11-02 21:01:31,312 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 270 transitions, 2539 flow [2022-11-02 21:01:31,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:31,313 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] [2022-11-02 21:01:31,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-02 21:01:31,313 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:31,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:31,314 INFO L85 PathProgramCache]: Analyzing trace with hash 681641326, now seen corresponding path program 29 times [2022-11-02 21:01:31,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:31,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614475654] [2022-11-02 21:01:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:31,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:31,879 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 21:01:31,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:31,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614475654] [2022-11-02 21:01:31,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614475654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:31,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:31,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:31,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26388134] [2022-11-02 21:01:31,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:31,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:31,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:31,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:31,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:31,882 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:31,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 270 transitions, 2539 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:31,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:31,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:31,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:33,215 INFO L130 PetriNetUnfolder]: 262/765 cut-off events. [2022-11-02 21:01:33,215 INFO L131 PetriNetUnfolder]: For 4914/4914 co-relation queries the response was YES. [2022-11-02 21:01:33,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 765 events. 262/765 cut-off events. For 4914/4914 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3858 event pairs, 19 based on Foata normal form. 1/763 useless extension candidates. Maximal degree in co-relation 4262. Up to 466 conditions per place. [2022-11-02 21:01:33,226 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 147 selfloop transitions, 111 changer transitions 19/316 dead transitions. [2022-11-02 21:01:33,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 316 transitions, 3517 flow [2022-11-02 21:01:33,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-02 21:01:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-02 21:01:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1553 transitions. [2022-11-02 21:01:33,233 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5696991929567131 [2022-11-02 21:01:33,233 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1553 transitions. [2022-11-02 21:01:33,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1553 transitions. [2022-11-02 21:01:33,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:33,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1553 transitions. [2022-11-02 21:01:33,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 53.55172413793103) internal successors, (1553), 29 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,240 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 94.0) internal successors, (2820), 30 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,240 INFO L175 Difference]: Start difference. First operand has 330 places, 270 transitions, 2539 flow. Second operand 29 states and 1553 transitions. [2022-11-02 21:01:33,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 316 transitions, 3517 flow [2022-11-02 21:01:33,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 316 transitions, 3219 flow, removed 15 selfloop flow, removed 32 redundant places. [2022-11-02 21:01:33,295 INFO L231 Difference]: Finished difference. Result has 325 places, 275 transitions, 2609 flow [2022-11-02 21:01:33,296 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2261, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2609, PETRI_PLACES=325, PETRI_TRANSITIONS=275} [2022-11-02 21:01:33,297 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 237 predicate places. [2022-11-02 21:01:33,297 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 275 transitions, 2609 flow [2022-11-02 21:01:33,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:33,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:33,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-02 21:01:33,298 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:33,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:33,299 INFO L85 PathProgramCache]: Analyzing trace with hash 2058527646, now seen corresponding path program 30 times [2022-11-02 21:01:33,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:33,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069251203] [2022-11-02 21:01:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:33,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:33,895 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 21:01:33,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:33,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069251203] [2022-11-02 21:01:33,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069251203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:33,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:33,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:33,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109033023] [2022-11-02 21:01:33,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:33,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:33,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:33,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:33,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:33,897 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:33,898 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 275 transitions, 2609 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:33,898 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:33,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:33,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:35,333 INFO L130 PetriNetUnfolder]: 265/756 cut-off events. [2022-11-02 21:01:35,334 INFO L131 PetriNetUnfolder]: For 5394/5394 co-relation queries the response was YES. [2022-11-02 21:01:35,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4383 conditions, 756 events. 265/756 cut-off events. For 5394/5394 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3755 event pairs, 18 based on Foata normal form. 1/754 useless extension candidates. Maximal degree in co-relation 4284. Up to 468 conditions per place. [2022-11-02 21:01:35,340 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 149 selfloop transitions, 111 changer transitions 18/317 dead transitions. [2022-11-02 21:01:35,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 317 transitions, 3544 flow [2022-11-02 21:01:35,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:01:35,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:01:35,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1605 transitions. [2022-11-02 21:01:35,343 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5691489361702128 [2022-11-02 21:01:35,343 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1605 transitions. [2022-11-02 21:01:35,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1605 transitions. [2022-11-02 21:01:35,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:35,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1605 transitions. [2022-11-02 21:01:35,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.5) internal successors, (1605), 30 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,349 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,349 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,350 INFO L175 Difference]: Start difference. First operand has 325 places, 275 transitions, 2609 flow. Second operand 30 states and 1605 transitions. [2022-11-02 21:01:35,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 317 transitions, 3544 flow [2022-11-02 21:01:35,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 317 transitions, 3234 flow, removed 63 selfloop flow, removed 25 redundant places. [2022-11-02 21:01:35,404 INFO L231 Difference]: Finished difference. Result has 331 places, 277 transitions, 2649 flow [2022-11-02 21:01:35,404 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2349, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2649, PETRI_PLACES=331, PETRI_TRANSITIONS=277} [2022-11-02 21:01:35,405 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 243 predicate places. [2022-11-02 21:01:35,405 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 277 transitions, 2649 flow [2022-11-02 21:01:35,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:35,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:35,406 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] [2022-11-02 21:01:35,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-02 21:01:35,406 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:35,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:35,407 INFO L85 PathProgramCache]: Analyzing trace with hash 932371766, now seen corresponding path program 31 times [2022-11-02 21:01:35,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:35,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496012454] [2022-11-02 21:01:35,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:35,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:36,107 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 21:01:36,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:36,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496012454] [2022-11-02 21:01:36,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496012454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:36,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:36,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 21:01:36,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312972836] [2022-11-02 21:01:36,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:36,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:01:36,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:36,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:01:36,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:01:36,110 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:36,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 277 transitions, 2649 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:36,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:36,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:36,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:37,728 INFO L130 PetriNetUnfolder]: 257/725 cut-off events. [2022-11-02 21:01:37,729 INFO L131 PetriNetUnfolder]: For 4664/4664 co-relation queries the response was YES. [2022-11-02 21:01:37,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4191 conditions, 725 events. 257/725 cut-off events. For 4664/4664 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3527 event pairs, 18 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 4091. Up to 503 conditions per place. [2022-11-02 21:01:37,737 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 168 selfloop transitions, 64 changer transitions 29/300 dead transitions. [2022-11-02 21:01:37,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 300 transitions, 3274 flow [2022-11-02 21:01:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:01:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:01:37,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1681 transitions. [2022-11-02 21:01:37,740 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.558843085106383 [2022-11-02 21:01:37,740 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1681 transitions. [2022-11-02 21:01:37,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1681 transitions. [2022-11-02 21:01:37,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:37,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1681 transitions. [2022-11-02 21:01:37,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.53125) internal successors, (1681), 32 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:37,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:37,744 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:37,744 INFO L175 Difference]: Start difference. First operand has 331 places, 277 transitions, 2649 flow. Second operand 32 states and 1681 transitions. [2022-11-02 21:01:37,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 300 transitions, 3274 flow [2022-11-02 21:01:37,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 300 transitions, 3045 flow, removed 26 selfloop flow, removed 28 redundant places. [2022-11-02 21:01:37,777 INFO L231 Difference]: Finished difference. Result has 333 places, 257 transitions, 2323 flow [2022-11-02 21:01:37,778 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2426, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2323, PETRI_PLACES=333, PETRI_TRANSITIONS=257} [2022-11-02 21:01:37,778 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 245 predicate places. [2022-11-02 21:01:37,778 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 257 transitions, 2323 flow [2022-11-02 21:01:37,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:37,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:37,779 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] [2022-11-02 21:01:37,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-02 21:01:37,779 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:37,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:37,780 INFO L85 PathProgramCache]: Analyzing trace with hash 742136622, now seen corresponding path program 32 times [2022-11-02 21:01:37,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:37,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442349319] [2022-11-02 21:01:37,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:37,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:38,381 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 21:01:38,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:38,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442349319] [2022-11-02 21:01:38,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442349319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:38,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:38,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:38,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370406772] [2022-11-02 21:01:38,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:38,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:38,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:38,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:38,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:38,384 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:38,385 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 257 transitions, 2323 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:38,385 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:38,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:38,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:39,764 INFO L130 PetriNetUnfolder]: 257/721 cut-off events. [2022-11-02 21:01:39,764 INFO L131 PetriNetUnfolder]: For 4309/4309 co-relation queries the response was YES. [2022-11-02 21:01:39,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4041 conditions, 721 events. 257/721 cut-off events. For 4309/4309 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3458 event pairs, 17 based on Foata normal form. 1/719 useless extension candidates. Maximal degree in co-relation 3945. Up to 456 conditions per place. [2022-11-02 21:01:39,772 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 143 selfloop transitions, 99 changer transitions 16/297 dead transitions. [2022-11-02 21:01:39,772 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 297 transitions, 3139 flow [2022-11-02 21:01:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:01:39,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 21:01:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1751 transitions. [2022-11-02 21:01:39,775 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.564474532559639 [2022-11-02 21:01:39,775 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1751 transitions. [2022-11-02 21:01:39,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1751 transitions. [2022-11-02 21:01:39,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:39,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1751 transitions. [2022-11-02 21:01:39,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.06060606060606) internal successors, (1751), 33 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:39,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:39,780 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:39,780 INFO L175 Difference]: Start difference. First operand has 333 places, 257 transitions, 2323 flow. Second operand 33 states and 1751 transitions. [2022-11-02 21:01:39,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 297 transitions, 3139 flow [2022-11-02 21:01:39,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 297 transitions, 2872 flow, removed 27 selfloop flow, removed 36 redundant places. [2022-11-02 21:01:39,811 INFO L231 Difference]: Finished difference. Result has 307 places, 259 transitions, 2339 flow [2022-11-02 21:01:39,811 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2339, PETRI_PLACES=307, PETRI_TRANSITIONS=259} [2022-11-02 21:01:39,812 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 219 predicate places. [2022-11-02 21:01:39,812 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 259 transitions, 2339 flow [2022-11-02 21:01:39,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:39,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:39,813 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] [2022-11-02 21:01:39,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-02 21:01:39,813 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1670592494, now seen corresponding path program 33 times [2022-11-02 21:01:39,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:39,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550442753] [2022-11-02 21:01:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:39,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:40,413 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 21:01:40,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:40,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550442753] [2022-11-02 21:01:40,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550442753] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:40,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:40,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:01:40,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689234010] [2022-11-02 21:01:40,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:40,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:40,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:40,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:40,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:40,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 259 transitions, 2339 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:40,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:40,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:40,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:41,860 INFO L130 PetriNetUnfolder]: 255/714 cut-off events. [2022-11-02 21:01:41,860 INFO L131 PetriNetUnfolder]: For 4073/4073 co-relation queries the response was YES. [2022-11-02 21:01:41,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3947 conditions, 714 events. 255/714 cut-off events. For 4073/4073 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3404 event pairs, 18 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 3858. Up to 451 conditions per place. [2022-11-02 21:01:41,866 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 141 selfloop transitions, 89 changer transitions 25/294 dead transitions. [2022-11-02 21:01:41,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 294 transitions, 3102 flow [2022-11-02 21:01:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:01:41,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:01:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1698 transitions. [2022-11-02 21:01:41,869 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5644946808510638 [2022-11-02 21:01:41,869 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1698 transitions. [2022-11-02 21:01:41,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1698 transitions. [2022-11-02 21:01:41,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:41,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1698 transitions. [2022-11-02 21:01:41,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.0625) internal successors, (1698), 32 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:41,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:41,873 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:41,874 INFO L175 Difference]: Start difference. First operand has 307 places, 259 transitions, 2339 flow. Second operand 32 states and 1698 transitions. [2022-11-02 21:01:41,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 294 transitions, 3102 flow [2022-11-02 21:01:41,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 294 transitions, 2866 flow, removed 29 selfloop flow, removed 26 redundant places. [2022-11-02 21:01:41,916 INFO L231 Difference]: Finished difference. Result has 313 places, 248 transitions, 2248 flow [2022-11-02 21:01:41,917 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2248, PETRI_PLACES=313, PETRI_TRANSITIONS=248} [2022-11-02 21:01:41,917 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 225 predicate places. [2022-11-02 21:01:41,917 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 248 transitions, 2248 flow [2022-11-02 21:01:41,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:41,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:41,918 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] [2022-11-02 21:01:41,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-02 21:01:41,918 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:41,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:41,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1757961956, now seen corresponding path program 34 times [2022-11-02 21:01:41,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:41,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261346859] [2022-11-02 21:01:41,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:41,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:41,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:42,460 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 21:01:42,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:42,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261346859] [2022-11-02 21:01:42,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261346859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:42,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:42,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:01:42,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654116822] [2022-11-02 21:01:42,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:42,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:42,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:42,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:42,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:42,464 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:42,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 248 transitions, 2248 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:42,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:42,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:42,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:43,858 INFO L130 PetriNetUnfolder]: 250/690 cut-off events. [2022-11-02 21:01:43,859 INFO L131 PetriNetUnfolder]: For 4291/4291 co-relation queries the response was YES. [2022-11-02 21:01:43,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3946 conditions, 690 events. 250/690 cut-off events. For 4291/4291 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3242 event pairs, 17 based on Foata normal form. 1/688 useless extension candidates. Maximal degree in co-relation 3852. Up to 467 conditions per place. [2022-11-02 21:01:43,869 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 83 changer transitions 16/284 dead transitions. [2022-11-02 21:01:43,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 284 transitions, 3026 flow [2022-11-02 21:01:43,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:01:43,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:01:43,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1792 transitions. [2022-11-02 21:01:43,872 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5607008760951189 [2022-11-02 21:01:43,872 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1792 transitions. [2022-11-02 21:01:43,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1792 transitions. [2022-11-02 21:01:43,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:43,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1792 transitions. [2022-11-02 21:01:43,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 52.705882352941174) internal successors, (1792), 34 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:43,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:43,878 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:43,879 INFO L175 Difference]: Start difference. First operand has 313 places, 248 transitions, 2248 flow. Second operand 34 states and 1792 transitions. [2022-11-02 21:01:43,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 284 transitions, 3026 flow [2022-11-02 21:01:43,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 284 transitions, 2743 flow, removed 31 selfloop flow, removed 36 redundant places. [2022-11-02 21:01:43,922 INFO L231 Difference]: Finished difference. Result has 306 places, 250 transitions, 2220 flow [2022-11-02 21:01:43,923 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2220, PETRI_PLACES=306, PETRI_TRANSITIONS=250} [2022-11-02 21:01:43,923 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 218 predicate places. [2022-11-02 21:01:43,923 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 250 transitions, 2220 flow [2022-11-02 21:01:43,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:43,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:43,924 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] [2022-11-02 21:01:43,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-02 21:01:43,924 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:43,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:43,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1838998680, now seen corresponding path program 35 times [2022-11-02 21:01:43,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:43,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029046279] [2022-11-02 21:01:43,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:43,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:44,532 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 21:01:44,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:44,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029046279] [2022-11-02 21:01:44,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029046279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:44,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:44,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:44,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906107847] [2022-11-02 21:01:44,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:44,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:44,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:44,535 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:44,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 250 transitions, 2220 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:44,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:44,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:44,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:45,802 INFO L130 PetriNetUnfolder]: 245/676 cut-off events. [2022-11-02 21:01:45,802 INFO L131 PetriNetUnfolder]: For 4000/4000 co-relation queries the response was YES. [2022-11-02 21:01:45,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3817 conditions, 676 events. 245/676 cut-off events. For 4000/4000 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3171 event pairs, 16 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 3725. Up to 445 conditions per place. [2022-11-02 21:01:45,808 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 133 selfloop transitions, 87 changer transitions 20/279 dead transitions. [2022-11-02 21:01:45,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 279 transitions, 2885 flow [2022-11-02 21:01:45,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:01:45,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:01:45,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1593 transitions. [2022-11-02 21:01:45,811 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5648936170212766 [2022-11-02 21:01:45,811 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1593 transitions. [2022-11-02 21:01:45,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1593 transitions. [2022-11-02 21:01:45,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:45,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1593 transitions. [2022-11-02 21:01:45,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 53.1) internal successors, (1593), 30 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:45,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:45,818 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:45,818 INFO L175 Difference]: Start difference. First operand has 306 places, 250 transitions, 2220 flow. Second operand 30 states and 1593 transitions. [2022-11-02 21:01:45,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 279 transitions, 2885 flow [2022-11-02 21:01:45,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 279 transitions, 2690 flow, removed 30 selfloop flow, removed 28 redundant places. [2022-11-02 21:01:45,862 INFO L231 Difference]: Finished difference. Result has 305 places, 241 transitions, 2157 flow [2022-11-02 21:01:45,863 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2157, PETRI_PLACES=305, PETRI_TRANSITIONS=241} [2022-11-02 21:01:45,863 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 217 predicate places. [2022-11-02 21:01:45,863 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 241 transitions, 2157 flow [2022-11-02 21:01:45,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:45,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:45,864 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] [2022-11-02 21:01:45,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-02 21:01:45,864 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:45,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:45,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1380906188, now seen corresponding path program 36 times [2022-11-02 21:01:45,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:45,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433030724] [2022-11-02 21:01:45,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:45,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:46,407 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 21:01:46,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:46,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433030724] [2022-11-02 21:01:46,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433030724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:46,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:46,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:01:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684247927] [2022-11-02 21:01:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:46,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:46,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:46,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:46,409 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:46,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 241 transitions, 2157 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:46,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:46,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:46,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:47,666 INFO L130 PetriNetUnfolder]: 238/659 cut-off events. [2022-11-02 21:01:47,666 INFO L131 PetriNetUnfolder]: For 3887/3887 co-relation queries the response was YES. [2022-11-02 21:01:47,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3740 conditions, 659 events. 238/659 cut-off events. For 3887/3887 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3071 event pairs, 19 based on Foata normal form. 1/656 useless extension candidates. Maximal degree in co-relation 3647. Up to 445 conditions per place. [2022-11-02 21:01:47,675 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 137 selfloop transitions, 69 changer transitions 21/266 dead transitions. [2022-11-02 21:01:47,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 266 transitions, 2758 flow [2022-11-02 21:01:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:01:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:01:47,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1636 transitions. [2022-11-02 21:01:47,677 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5614275909402883 [2022-11-02 21:01:47,678 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1636 transitions. [2022-11-02 21:01:47,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1636 transitions. [2022-11-02 21:01:47,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:47,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1636 transitions. [2022-11-02 21:01:47,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 52.774193548387096) internal successors, (1636), 31 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:47,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:47,684 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:47,684 INFO L175 Difference]: Start difference. First operand has 305 places, 241 transitions, 2157 flow. Second operand 31 states and 1636 transitions. [2022-11-02 21:01:47,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 266 transitions, 2758 flow [2022-11-02 21:01:47,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 266 transitions, 2482 flow, removed 14 selfloop flow, removed 34 redundant places. [2022-11-02 21:01:47,715 INFO L231 Difference]: Finished difference. Result has 295 places, 228 transitions, 1923 flow [2022-11-02 21:01:47,716 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1923, PETRI_PLACES=295, PETRI_TRANSITIONS=228} [2022-11-02 21:01:47,716 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 207 predicate places. [2022-11-02 21:01:47,717 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 228 transitions, 1923 flow [2022-11-02 21:01:47,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:47,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:47,717 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] [2022-11-02 21:01:47,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-02 21:01:47,718 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:47,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1256073524, now seen corresponding path program 37 times [2022-11-02 21:01:47,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:47,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687018865] [2022-11-02 21:01:47,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:47,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:48,315 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 21:01:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:48,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687018865] [2022-11-02 21:01:48,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687018865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:48,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:48,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:01:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230377559] [2022-11-02 21:01:48,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:48,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:48,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:48,318 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:48,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 228 transitions, 1923 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:48,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:48,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:48,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:49,644 INFO L130 PetriNetUnfolder]: 234/638 cut-off events. [2022-11-02 21:01:49,644 INFO L131 PetriNetUnfolder]: For 3373/3373 co-relation queries the response was YES. [2022-11-02 21:01:49,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3530 conditions, 638 events. 234/638 cut-off events. For 3373/3373 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2895 event pairs, 18 based on Foata normal form. 1/636 useless extension candidates. Maximal degree in co-relation 3442. Up to 434 conditions per place. [2022-11-02 21:01:49,649 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 125 selfloop transitions, 69 changer transitions 22/255 dead transitions. [2022-11-02 21:01:49,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 255 transitions, 2500 flow [2022-11-02 21:01:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:01:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:01:49,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1586 transitions. [2022-11-02 21:01:49,651 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5624113475177305 [2022-11-02 21:01:49,652 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1586 transitions. [2022-11-02 21:01:49,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1586 transitions. [2022-11-02 21:01:49,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:49,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1586 transitions. [2022-11-02 21:01:49,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.86666666666667) internal successors, (1586), 30 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:49,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:49,656 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:49,657 INFO L175 Difference]: Start difference. First operand has 295 places, 228 transitions, 1923 flow. Second operand 30 states and 1586 transitions. [2022-11-02 21:01:49,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 255 transitions, 2500 flow [2022-11-02 21:01:49,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 255 transitions, 2269 flow, removed 18 selfloop flow, removed 35 redundant places. [2022-11-02 21:01:49,680 INFO L231 Difference]: Finished difference. Result has 274 places, 218 transitions, 1772 flow [2022-11-02 21:01:49,681 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1772, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2022-11-02 21:01:49,681 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 186 predicate places. [2022-11-02 21:01:49,681 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 1772 flow [2022-11-02 21:01:49,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:49,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:49,682 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] [2022-11-02 21:01:49,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-02 21:01:49,682 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:49,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash -961924554, now seen corresponding path program 38 times [2022-11-02 21:01:49,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:49,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003875327] [2022-11-02 21:01:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:49,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:50,297 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 21:01:50,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:50,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003875327] [2022-11-02 21:01:50,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003875327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:50,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:50,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:01:50,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359669517] [2022-11-02 21:01:50,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:50,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:01:50,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:50,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:01:50,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:01:50,300 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:50,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 1772 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:50,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:50,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:50,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:51,758 INFO L130 PetriNetUnfolder]: 230/629 cut-off events. [2022-11-02 21:01:51,759 INFO L131 PetriNetUnfolder]: For 3181/3181 co-relation queries the response was YES. [2022-11-02 21:01:51,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 629 events. 230/629 cut-off events. For 3181/3181 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2814 event pairs, 18 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 3303. Up to 426 conditions per place. [2022-11-02 21:01:51,764 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 118 selfloop transitions, 72 changer transitions 15/244 dead transitions. [2022-11-02 21:01:51,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 244 transitions, 2348 flow [2022-11-02 21:01:51,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:01:51,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:01:51,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1682 transitions. [2022-11-02 21:01:51,767 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5591755319148937 [2022-11-02 21:01:51,767 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1682 transitions. [2022-11-02 21:01:51,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1682 transitions. [2022-11-02 21:01:51,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:51,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1682 transitions. [2022-11-02 21:01:51,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 52.5625) internal successors, (1682), 32 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:51,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:51,771 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:51,771 INFO L175 Difference]: Start difference. First operand has 274 places, 218 transitions, 1772 flow. Second operand 32 states and 1682 transitions. [2022-11-02 21:01:51,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 244 transitions, 2348 flow [2022-11-02 21:01:51,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 244 transitions, 2115 flow, removed 14 selfloop flow, removed 33 redundant places. [2022-11-02 21:01:51,791 INFO L231 Difference]: Finished difference. Result has 262 places, 213 transitions, 1682 flow [2022-11-02 21:01:51,792 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1551, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1682, PETRI_PLACES=262, PETRI_TRANSITIONS=213} [2022-11-02 21:01:51,792 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 174 predicate places. [2022-11-02 21:01:51,792 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 213 transitions, 1682 flow [2022-11-02 21:01:51,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:51,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:51,793 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] [2022-11-02 21:01:51,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-02 21:01:51,793 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:51,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:51,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1313069600, now seen corresponding path program 39 times [2022-11-02 21:01:51,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:51,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350990804] [2022-11-02 21:01:51,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:51,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:52,384 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 21:01:52,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:52,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350990804] [2022-11-02 21:01:52,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350990804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:52,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:52,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:01:52,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386075540] [2022-11-02 21:01:52,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:52,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:01:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:52,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:01:52,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:01:52,387 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:52,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 213 transitions, 1682 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:52,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:52,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:52,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:53,665 INFO L130 PetriNetUnfolder]: 226/608 cut-off events. [2022-11-02 21:01:53,665 INFO L131 PetriNetUnfolder]: For 3020/3020 co-relation queries the response was YES. [2022-11-02 21:01:53,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 608 events. 226/608 cut-off events. For 3020/3020 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2693 event pairs, 17 based on Foata normal form. 1/607 useless extension candidates. Maximal degree in co-relation 3176. Up to 424 conditions per place. [2022-11-02 21:01:53,671 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 112 selfloop transitions, 55 changer transitions 31/237 dead transitions. [2022-11-02 21:01:53,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 237 transitions, 2193 flow [2022-11-02 21:01:53,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 21:01:53,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 21:01:53,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1577 transitions. [2022-11-02 21:01:53,674 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5592198581560284 [2022-11-02 21:01:53,674 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1577 transitions. [2022-11-02 21:01:53,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1577 transitions. [2022-11-02 21:01:53,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:53,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1577 transitions. [2022-11-02 21:01:53,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 52.56666666666667) internal successors, (1577), 30 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:53,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:53,680 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 94.0) internal successors, (2914), 31 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:53,680 INFO L175 Difference]: Start difference. First operand has 262 places, 213 transitions, 1682 flow. Second operand 30 states and 1577 transitions. [2022-11-02 21:01:53,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 237 transitions, 2193 flow [2022-11-02 21:01:53,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 237 transitions, 1957 flow, removed 12 selfloop flow, removed 32 redundant places. [2022-11-02 21:01:53,709 INFO L231 Difference]: Finished difference. Result has 255 places, 196 transitions, 1474 flow [2022-11-02 21:01:53,710 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1474, PETRI_PLACES=255, PETRI_TRANSITIONS=196} [2022-11-02 21:01:53,710 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 167 predicate places. [2022-11-02 21:01:53,710 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 196 transitions, 1474 flow [2022-11-02 21:01:53,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:53,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:53,711 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] [2022-11-02 21:01:53,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-02 21:01:53,712 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:53,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 830304468, now seen corresponding path program 40 times [2022-11-02 21:01:53,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:53,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081281310] [2022-11-02 21:01:53,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:53,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:54,262 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 21:01:54,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:54,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081281310] [2022-11-02 21:01:54,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081281310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:54,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:54,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:01:54,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467882234] [2022-11-02 21:01:54,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:54,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:01:54,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:54,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:01:54,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:01:54,264 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:54,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 196 transitions, 1474 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:54,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:54,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:54,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:55,957 INFO L130 PetriNetUnfolder]: 260/724 cut-off events. [2022-11-02 21:01:55,957 INFO L131 PetriNetUnfolder]: For 3528/3528 co-relation queries the response was YES. [2022-11-02 21:01:55,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3669 conditions, 724 events. 260/724 cut-off events. For 3528/3528 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3532 event pairs, 52 based on Foata normal form. 1/723 useless extension candidates. Maximal degree in co-relation 3596. Up to 435 conditions per place. [2022-11-02 21:01:55,965 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 115 selfloop transitions, 81 changer transitions 45/280 dead transitions. [2022-11-02 21:01:55,965 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 280 transitions, 2767 flow [2022-11-02 21:01:55,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 21:01:55,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-02 21:01:55,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1965 transitions. [2022-11-02 21:01:55,968 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5649798734905118 [2022-11-02 21:01:55,968 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1965 transitions. [2022-11-02 21:01:55,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1965 transitions. [2022-11-02 21:01:55,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:55,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1965 transitions. [2022-11-02 21:01:55,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 53.108108108108105) internal successors, (1965), 37 states have internal predecessors, (1965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:55,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:55,973 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:55,973 INFO L175 Difference]: Start difference. First operand has 255 places, 196 transitions, 1474 flow. Second operand 37 states and 1965 transitions. [2022-11-02 21:01:55,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 280 transitions, 2767 flow [2022-11-02 21:01:55,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 280 transitions, 2503 flow, removed 25 selfloop flow, removed 28 redundant places. [2022-11-02 21:01:55,993 INFO L231 Difference]: Finished difference. Result has 257 places, 221 transitions, 1845 flow [2022-11-02 21:01:55,994 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1845, PETRI_PLACES=257, PETRI_TRANSITIONS=221} [2022-11-02 21:01:55,994 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 169 predicate places. [2022-11-02 21:01:55,994 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 221 transitions, 1845 flow [2022-11-02 21:01:55,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:55,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:55,995 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] [2022-11-02 21:01:55,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-02 21:01:55,995 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:55,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash 419780804, now seen corresponding path program 41 times [2022-11-02 21:01:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:55,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284016233] [2022-11-02 21:01:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:56,473 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 21:01:56,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:56,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284016233] [2022-11-02 21:01:56,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284016233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:56,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:56,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:56,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481287812] [2022-11-02 21:01:56,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:56,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:56,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:56,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:56,476 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:56,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 221 transitions, 1845 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:56,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:56,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:56,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:01:58,029 INFO L130 PetriNetUnfolder]: 280/773 cut-off events. [2022-11-02 21:01:58,030 INFO L131 PetriNetUnfolder]: For 5522/5522 co-relation queries the response was YES. [2022-11-02 21:01:58,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4232 conditions, 773 events. 280/773 cut-off events. For 5522/5522 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3756 event pairs, 39 based on Foata normal form. 1/772 useless extension candidates. Maximal degree in co-relation 4149. Up to 482 conditions per place. [2022-11-02 21:01:58,036 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 146 selfloop transitions, 97 changer transitions 22/304 dead transitions. [2022-11-02 21:01:58,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 304 transitions, 3346 flow [2022-11-02 21:01:58,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 21:01:58,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-02 21:01:58,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2071 transitions. [2022-11-02 21:01:58,039 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5649208947081288 [2022-11-02 21:01:58,039 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2071 transitions. [2022-11-02 21:01:58,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2071 transitions. [2022-11-02 21:01:58,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:01:58,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2071 transitions. [2022-11-02 21:01:58,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.1025641025641) internal successors, (2071), 39 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:58,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:58,044 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:58,044 INFO L175 Difference]: Start difference. First operand has 257 places, 221 transitions, 1845 flow. Second operand 39 states and 2071 transitions. [2022-11-02 21:01:58,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 304 transitions, 3346 flow [2022-11-02 21:01:58,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 304 transitions, 2978 flow, removed 148 selfloop flow, removed 21 redundant places. [2022-11-02 21:01:58,084 INFO L231 Difference]: Finished difference. Result has 277 places, 258 transitions, 2347 flow [2022-11-02 21:01:58,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2347, PETRI_PLACES=277, PETRI_TRANSITIONS=258} [2022-11-02 21:01:58,085 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 189 predicate places. [2022-11-02 21:01:58,085 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 258 transitions, 2347 flow [2022-11-02 21:01:58,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:58,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:01:58,086 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] [2022-11-02 21:01:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-02 21:01:58,086 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:01:58,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:58,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1418673538, now seen corresponding path program 42 times [2022-11-02 21:01:58,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:58,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393097793] [2022-11-02 21:01:58,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:58,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:58,630 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 21:01:58,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:58,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393097793] [2022-11-02 21:01:58,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393097793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:58,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:58,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:01:58,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208766761] [2022-11-02 21:01:58,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:58,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:01:58,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:58,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:01:58,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:01:58,632 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:01:58,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 258 transitions, 2347 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:01:58,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:01:58,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:01:58,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:00,079 INFO L130 PetriNetUnfolder]: 296/810 cut-off events. [2022-11-02 21:02:00,079 INFO L131 PetriNetUnfolder]: For 7245/7245 co-relation queries the response was YES. [2022-11-02 21:02:00,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4765 conditions, 810 events. 296/810 cut-off events. For 7245/7245 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4067 event pairs, 57 based on Foata normal form. 1/809 useless extension candidates. Maximal degree in co-relation 4680. Up to 527 conditions per place. [2022-11-02 21:02:00,087 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 166 selfloop transitions, 79 changer transitions 36/320 dead transitions. [2022-11-02 21:02:00,088 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 320 transitions, 3625 flow [2022-11-02 21:02:00,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:02:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:02:00,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1813 transitions. [2022-11-02 21:02:00,090 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5672715894868585 [2022-11-02 21:02:00,090 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1813 transitions. [2022-11-02 21:02:00,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1813 transitions. [2022-11-02 21:02:00,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:00,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1813 transitions. [2022-11-02 21:02:00,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.3235294117647) internal successors, (1813), 34 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:00,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:00,096 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:00,096 INFO L175 Difference]: Start difference. First operand has 277 places, 258 transitions, 2347 flow. Second operand 34 states and 1813 transitions. [2022-11-02 21:02:00,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 320 transitions, 3625 flow [2022-11-02 21:02:00,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 320 transitions, 3143 flow, removed 204 selfloop flow, removed 17 redundant places. [2022-11-02 21:02:00,135 INFO L231 Difference]: Finished difference. Result has 301 places, 268 transitions, 2299 flow [2022-11-02 21:02:00,136 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=1901, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2299, PETRI_PLACES=301, PETRI_TRANSITIONS=268} [2022-11-02 21:02:00,136 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 213 predicate places. [2022-11-02 21:02:00,136 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 268 transitions, 2299 flow [2022-11-02 21:02:00,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:00,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:00,137 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] [2022-11-02 21:02:00,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-02 21:02:00,137 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:00,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:00,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1755338970, now seen corresponding path program 43 times [2022-11-02 21:02:00,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:00,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740605900] [2022-11-02 21:02:00,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:00,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,678 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 21:02:00,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:00,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740605900] [2022-11-02 21:02:00,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740605900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:00,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:00,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:00,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932443362] [2022-11-02 21:02:00,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:00,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:00,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:00,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:00,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:00,682 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:00,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 268 transitions, 2299 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:00,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:00,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:00,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:02,185 INFO L130 PetriNetUnfolder]: 303/837 cut-off events. [2022-11-02 21:02:02,185 INFO L131 PetriNetUnfolder]: For 8506/8506 co-relation queries the response was YES. [2022-11-02 21:02:02,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5052 conditions, 837 events. 303/837 cut-off events. For 8506/8506 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4300 event pairs, 56 based on Foata normal form. 1/836 useless extension candidates. Maximal degree in co-relation 4955. Up to 524 conditions per place. [2022-11-02 21:02:02,195 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 163 selfloop transitions, 91 changer transitions 41/334 dead transitions. [2022-11-02 21:02:02,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 334 transitions, 3654 flow [2022-11-02 21:02:02,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:02:02,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-02 21:02:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1659 transitions. [2022-11-02 21:02:02,197 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5693205216197667 [2022-11-02 21:02:02,197 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1659 transitions. [2022-11-02 21:02:02,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1659 transitions. [2022-11-02 21:02:02,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:02,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1659 transitions. [2022-11-02 21:02:02,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 53.516129032258064) internal successors, (1659), 31 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:02,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:02,201 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 94.0) internal successors, (3008), 32 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:02,201 INFO L175 Difference]: Start difference. First operand has 301 places, 268 transitions, 2299 flow. Second operand 31 states and 1659 transitions. [2022-11-02 21:02:02,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 334 transitions, 3654 flow [2022-11-02 21:02:02,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 334 transitions, 3267 flow, removed 139 selfloop flow, removed 27 redundant places. [2022-11-02 21:02:02,239 INFO L231 Difference]: Finished difference. Result has 308 places, 276 transitions, 2458 flow [2022-11-02 21:02:02,240 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=2458, PETRI_PLACES=308, PETRI_TRANSITIONS=276} [2022-11-02 21:02:02,240 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 220 predicate places. [2022-11-02 21:02:02,240 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 276 transitions, 2458 flow [2022-11-02 21:02:02,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:02,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:02,241 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] [2022-11-02 21:02:02,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-02 21:02:02,241 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:02,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:02,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1438406290, now seen corresponding path program 44 times [2022-11-02 21:02:02,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:02,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115937322] [2022-11-02 21:02:02,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:02,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:02,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:02,842 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 21:02:02,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:02,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115937322] [2022-11-02 21:02:02,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115937322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:02,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:02,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:02:02,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326470980] [2022-11-02 21:02:02,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:02,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:02:02,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:02,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:02:02,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:02,845 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:02,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 276 transitions, 2458 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:02,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:02,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:02,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:04,437 INFO L130 PetriNetUnfolder]: 302/848 cut-off events. [2022-11-02 21:02:04,438 INFO L131 PetriNetUnfolder]: For 8942/8942 co-relation queries the response was YES. [2022-11-02 21:02:04,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5222 conditions, 848 events. 302/848 cut-off events. For 8942/8942 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4406 event pairs, 64 based on Foata normal form. 1/847 useless extension candidates. Maximal degree in co-relation 5120. Up to 540 conditions per place. [2022-11-02 21:02:04,452 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 162 selfloop transitions, 95 changer transitions 37/333 dead transitions. [2022-11-02 21:02:04,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 333 transitions, 3724 flow [2022-11-02 21:02:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 21:02:04,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 21:02:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1909 transitions. [2022-11-02 21:02:04,455 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5641252955082743 [2022-11-02 21:02:04,455 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1909 transitions. [2022-11-02 21:02:04,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1909 transitions. [2022-11-02 21:02:04,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:04,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1909 transitions. [2022-11-02 21:02:04,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.02777777777778) internal successors, (1909), 36 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:04,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:04,461 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:04,462 INFO L175 Difference]: Start difference. First operand has 308 places, 276 transitions, 2458 flow. Second operand 36 states and 1909 transitions. [2022-11-02 21:02:04,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 333 transitions, 3724 flow [2022-11-02 21:02:04,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 333 transitions, 3401 flow, removed 114 selfloop flow, removed 28 redundant places. [2022-11-02 21:02:04,515 INFO L231 Difference]: Finished difference. Result has 317 places, 284 transitions, 2660 flow [2022-11-02 21:02:04,515 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2267, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2660, PETRI_PLACES=317, PETRI_TRANSITIONS=284} [2022-11-02 21:02:04,515 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 229 predicate places. [2022-11-02 21:02:04,515 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 284 transitions, 2660 flow [2022-11-02 21:02:04,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:04,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:04,516 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] [2022-11-02 21:02:04,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-02 21:02:04,516 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:04,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1586738840, now seen corresponding path program 45 times [2022-11-02 21:02:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:04,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971520523] [2022-11-02 21:02:04,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:05,074 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 21:02:05,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:05,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971520523] [2022-11-02 21:02:05,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971520523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:05,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:05,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:02:05,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366930242] [2022-11-02 21:02:05,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:05,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:02:05,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:05,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:02:05,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:02:05,077 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:05,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 284 transitions, 2660 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:05,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:05,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:05,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:07,236 INFO L130 PetriNetUnfolder]: 344/957 cut-off events. [2022-11-02 21:02:07,236 INFO L131 PetriNetUnfolder]: For 10892/10892 co-relation queries the response was YES. [2022-11-02 21:02:07,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5988 conditions, 957 events. 344/957 cut-off events. For 10892/10892 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5126 event pairs, 36 based on Foata normal form. 1/956 useless extension candidates. Maximal degree in co-relation 5884. Up to 587 conditions per place. [2022-11-02 21:02:07,247 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 191 selfloop transitions, 155 changer transitions 22/407 dead transitions. [2022-11-02 21:02:07,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 407 transitions, 4841 flow [2022-11-02 21:02:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-02 21:02:07,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-11-02 21:02:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 2728 transitions. [2022-11-02 21:02:07,251 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.55810147299509 [2022-11-02 21:02:07,251 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 2728 transitions. [2022-11-02 21:02:07,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 2728 transitions. [2022-11-02 21:02:07,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:07,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 2728 transitions. [2022-11-02 21:02:07,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 52.46153846153846) internal successors, (2728), 52 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:07,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:07,256 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 94.0) internal successors, (4982), 53 states have internal predecessors, (4982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:07,256 INFO L175 Difference]: Start difference. First operand has 317 places, 284 transitions, 2660 flow. Second operand 52 states and 2728 transitions. [2022-11-02 21:02:07,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 407 transitions, 4841 flow [2022-11-02 21:02:07,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 407 transitions, 4581 flow, removed 75 selfloop flow, removed 31 redundant places. [2022-11-02 21:02:07,312 INFO L231 Difference]: Finished difference. Result has 347 places, 368 transitions, 3986 flow [2022-11-02 21:02:07,312 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=2478, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3986, PETRI_PLACES=347, PETRI_TRANSITIONS=368} [2022-11-02 21:02:07,312 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 259 predicate places. [2022-11-02 21:02:07,313 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 368 transitions, 3986 flow [2022-11-02 21:02:07,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:07,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:07,319 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] [2022-11-02 21:02:07,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-02 21:02:07,320 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2107095988, now seen corresponding path program 46 times [2022-11-02 21:02:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:07,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177545271] [2022-11-02 21:02:07,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:07,766 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 21:02:07,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:07,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177545271] [2022-11-02 21:02:07,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177545271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:07,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:07,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:07,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494991550] [2022-11-02 21:02:07,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:07,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:07,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:07,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:07,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:07,769 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:07,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 368 transitions, 3986 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:07,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:07,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:07,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:09,316 INFO L130 PetriNetUnfolder]: 357/1009 cut-off events. [2022-11-02 21:02:09,316 INFO L131 PetriNetUnfolder]: For 12990/12990 co-relation queries the response was YES. [2022-11-02 21:02:09,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 1009 events. 357/1009 cut-off events. For 12990/12990 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5616 event pairs, 39 based on Foata normal form. 1/1008 useless extension candidates. Maximal degree in co-relation 6565. Up to 687 conditions per place. [2022-11-02 21:02:09,328 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 263 selfloop transitions, 93 changer transitions 31/426 dead transitions. [2022-11-02 21:02:09,328 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 426 transitions, 5385 flow [2022-11-02 21:02:09,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 21:02:09,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-02 21:02:09,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-02 21:02:09,333 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-02 21:02:09,333 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-02 21:02:09,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-02 21:02:09,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:09,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-02 21:02:09,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:09,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:09,340 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:09,340 INFO L175 Difference]: Start difference. First operand has 347 places, 368 transitions, 3986 flow. Second operand 38 states and 2011 transitions. [2022-11-02 21:02:09,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 426 transitions, 5385 flow [2022-11-02 21:02:09,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 426 transitions, 4652 flow, removed 315 selfloop flow, removed 22 redundant places. [2022-11-02 21:02:09,422 INFO L231 Difference]: Finished difference. Result has 370 places, 383 transitions, 3740 flow [2022-11-02 21:02:09,422 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3285, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3740, PETRI_PLACES=370, PETRI_TRANSITIONS=383} [2022-11-02 21:02:09,423 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 282 predicate places. [2022-11-02 21:02:09,423 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 383 transitions, 3740 flow [2022-11-02 21:02:09,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:09,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:09,423 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] [2022-11-02 21:02:09,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-02 21:02:09,423 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:09,424 INFO L85 PathProgramCache]: Analyzing trace with hash 403899946, now seen corresponding path program 47 times [2022-11-02 21:02:09,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:09,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905177065] [2022-11-02 21:02:09,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:09,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:09,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:09,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:09,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905177065] [2022-11-02 21:02:09,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905177065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:09,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:09,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 21:02:09,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276803522] [2022-11-02 21:02:09,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:09,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:02:09,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:09,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:02:09,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:02:09,840 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:09,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 383 transitions, 3740 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:09,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:09,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:09,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:11,275 INFO L130 PetriNetUnfolder]: 360/1017 cut-off events. [2022-11-02 21:02:11,275 INFO L131 PetriNetUnfolder]: For 11845/11845 co-relation queries the response was YES. [2022-11-02 21:02:11,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6535 conditions, 1017 events. 360/1017 cut-off events. For 11845/11845 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5685 event pairs, 34 based on Foata normal form. 1/1016 useless extension candidates. Maximal degree in co-relation 6412. Up to 676 conditions per place. [2022-11-02 21:02:11,289 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 267 selfloop transitions, 100 changer transitions 32/438 dead transitions. [2022-11-02 21:02:11,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 438 transitions, 5175 flow [2022-11-02 21:02:11,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:02:11,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:02:11,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1814 transitions. [2022-11-02 21:02:11,291 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.567584480600751 [2022-11-02 21:02:11,291 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1814 transitions. [2022-11-02 21:02:11,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1814 transitions. [2022-11-02 21:02:11,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:11,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1814 transitions. [2022-11-02 21:02:11,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.35294117647059) internal successors, (1814), 34 states have internal predecessors, (1814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:11,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:11,295 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:11,295 INFO L175 Difference]: Start difference. First operand has 370 places, 383 transitions, 3740 flow. Second operand 34 states and 1814 transitions. [2022-11-02 21:02:11,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 438 transitions, 5175 flow [2022-11-02 21:02:11,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 438 transitions, 4873 flow, removed 84 selfloop flow, removed 29 redundant places. [2022-11-02 21:02:11,415 INFO L231 Difference]: Finished difference. Result has 376 places, 390 transitions, 3875 flow [2022-11-02 21:02:11,415 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3467, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3875, PETRI_PLACES=376, PETRI_TRANSITIONS=390} [2022-11-02 21:02:11,415 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 288 predicate places. [2022-11-02 21:02:11,416 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 390 transitions, 3875 flow [2022-11-02 21:02:11,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:11,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:11,416 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] [2022-11-02 21:02:11,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-02 21:02:11,416 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:11,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:11,417 INFO L85 PathProgramCache]: Analyzing trace with hash 937310302, now seen corresponding path program 48 times [2022-11-02 21:02:11,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:11,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138603355] [2022-11-02 21:02:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:11,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:11,946 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 21:02:11,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:11,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138603355] [2022-11-02 21:02:11,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138603355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:11,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:11,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:02:11,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881941430] [2022-11-02 21:02:11,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:11,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:02:11,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:11,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:02:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:11,950 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:11,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 390 transitions, 3875 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:11,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:11,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:11,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:13,681 INFO L130 PetriNetUnfolder]: 363/1014 cut-off events. [2022-11-02 21:02:13,681 INFO L131 PetriNetUnfolder]: For 12615/12615 co-relation queries the response was YES. [2022-11-02 21:02:13,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6718 conditions, 1014 events. 363/1014 cut-off events. For 12615/12615 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5672 event pairs, 38 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 6595. Up to 700 conditions per place. [2022-11-02 21:02:13,704 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 275 selfloop transitions, 98 changer transitions 30/442 dead transitions. [2022-11-02 21:02:13,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 442 transitions, 5359 flow [2022-11-02 21:02:13,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 21:02:13,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-02 21:02:13,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2009 transitions. [2022-11-02 21:02:13,707 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5624300111982082 [2022-11-02 21:02:13,707 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2009 transitions. [2022-11-02 21:02:13,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2009 transitions. [2022-11-02 21:02:13,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:13,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2009 transitions. [2022-11-02 21:02:13,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.86842105263158) internal successors, (2009), 38 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:13,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:13,714 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:13,714 INFO L175 Difference]: Start difference. First operand has 376 places, 390 transitions, 3875 flow. Second operand 38 states and 2009 transitions. [2022-11-02 21:02:13,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 442 transitions, 5359 flow [2022-11-02 21:02:13,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 442 transitions, 5047 flow, removed 85 selfloop flow, removed 29 redundant places. [2022-11-02 21:02:13,821 INFO L231 Difference]: Finished difference. Result has 391 places, 400 transitions, 4080 flow [2022-11-02 21:02:13,821 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3603, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4080, PETRI_PLACES=391, PETRI_TRANSITIONS=400} [2022-11-02 21:02:13,822 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 303 predicate places. [2022-11-02 21:02:13,822 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 400 transitions, 4080 flow [2022-11-02 21:02:13,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:13,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:13,823 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] [2022-11-02 21:02:13,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-02 21:02:13,823 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:13,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2004271968, now seen corresponding path program 49 times [2022-11-02 21:02:13,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:13,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070800794] [2022-11-02 21:02:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:13,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:14,313 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 21:02:14,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:14,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070800794] [2022-11-02 21:02:14,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070800794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:14,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:14,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:14,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256919002] [2022-11-02 21:02:14,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:14,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:14,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:14,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:14,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:14,315 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:14,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 400 transitions, 4080 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:14,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:14,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:14,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:15,880 INFO L130 PetriNetUnfolder]: 366/1054 cut-off events. [2022-11-02 21:02:15,880 INFO L131 PetriNetUnfolder]: For 12591/12591 co-relation queries the response was YES. [2022-11-02 21:02:15,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6915 conditions, 1054 events. 366/1054 cut-off events. For 12591/12591 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6112 event pairs, 41 based on Foata normal form. 1/1053 useless extension candidates. Maximal degree in co-relation 6786. Up to 712 conditions per place. [2022-11-02 21:02:15,896 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 287 selfloop transitions, 86 changer transitions 40/452 dead transitions. [2022-11-02 21:02:15,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 452 transitions, 5524 flow [2022-11-02 21:02:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:02:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:02:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1805 transitions. [2022-11-02 21:02:15,898 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5647684605757196 [2022-11-02 21:02:15,898 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1805 transitions. [2022-11-02 21:02:15,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1805 transitions. [2022-11-02 21:02:15,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:15,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1805 transitions. [2022-11-02 21:02:15,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.088235294117645) internal successors, (1805), 34 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:15,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:15,903 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:15,903 INFO L175 Difference]: Start difference. First operand has 391 places, 400 transitions, 4080 flow. Second operand 34 states and 1805 transitions. [2022-11-02 21:02:15,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 452 transitions, 5524 flow [2022-11-02 21:02:15,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 452 transitions, 5102 flow, removed 144 selfloop flow, removed 29 redundant places. [2022-11-02 21:02:15,996 INFO L231 Difference]: Finished difference. Result has 402 places, 402 transitions, 4068 flow [2022-11-02 21:02:15,996 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3795, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4068, PETRI_PLACES=402, PETRI_TRANSITIONS=402} [2022-11-02 21:02:15,996 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 314 predicate places. [2022-11-02 21:02:15,996 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 402 transitions, 4068 flow [2022-11-02 21:02:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:15,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:15,997 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] [2022-11-02 21:02:15,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-02 21:02:15,997 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:15,997 INFO L85 PathProgramCache]: Analyzing trace with hash -2092823778, now seen corresponding path program 50 times [2022-11-02 21:02:15,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:15,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935844869] [2022-11-02 21:02:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:15,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:16,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:16,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:16,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935844869] [2022-11-02 21:02:16,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935844869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:16,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:16,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:16,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314268447] [2022-11-02 21:02:16,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:16,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:16,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:16,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:16,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:16,450 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:16,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 402 transitions, 4068 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:16,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:16,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:16,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:18,172 INFO L130 PetriNetUnfolder]: 364/1059 cut-off events. [2022-11-02 21:02:18,172 INFO L131 PetriNetUnfolder]: For 12723/12723 co-relation queries the response was YES. [2022-11-02 21:02:18,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6923 conditions, 1059 events. 364/1059 cut-off events. For 12723/12723 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6147 event pairs, 45 based on Foata normal form. 1/1058 useless extension candidates. Maximal degree in co-relation 6786. Up to 692 conditions per place. [2022-11-02 21:02:18,193 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 277 selfloop transitions, 111 changer transitions 29/456 dead transitions. [2022-11-02 21:02:18,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 456 transitions, 5568 flow [2022-11-02 21:02:18,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 21:02:18,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-02 21:02:18,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2066 transitions. [2022-11-02 21:02:18,196 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.563557010365521 [2022-11-02 21:02:18,196 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2066 transitions. [2022-11-02 21:02:18,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2066 transitions. [2022-11-02 21:02:18,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:18,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2066 transitions. [2022-11-02 21:02:18,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 52.97435897435897) internal successors, (2066), 39 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,203 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,203 INFO L175 Difference]: Start difference. First operand has 402 places, 402 transitions, 4068 flow. Second operand 39 states and 2066 transitions. [2022-11-02 21:02:18,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 456 transitions, 5568 flow [2022-11-02 21:02:18,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 456 transitions, 5353 flow, removed 35 selfloop flow, removed 29 redundant places. [2022-11-02 21:02:18,307 INFO L231 Difference]: Finished difference. Result has 411 places, 411 transitions, 4318 flow [2022-11-02 21:02:18,307 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=3885, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=4318, PETRI_PLACES=411, PETRI_TRANSITIONS=411} [2022-11-02 21:02:18,308 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 323 predicate places. [2022-11-02 21:02:18,308 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 411 transitions, 4318 flow [2022-11-02 21:02:18,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:18,309 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] [2022-11-02 21:02:18,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-02 21:02:18,309 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:18,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:18,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1341356334, now seen corresponding path program 51 times [2022-11-02 21:02:18,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:18,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722267043] [2022-11-02 21:02:18,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:18,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,878 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 21:02:18,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:18,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722267043] [2022-11-02 21:02:18,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722267043] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:18,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:18,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:02:18,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915144191] [2022-11-02 21:02:18,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:18,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:02:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:18,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:02:18,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:18,880 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:18,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 411 transitions, 4318 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:18,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:18,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:18,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:20,816 INFO L130 PetriNetUnfolder]: 399/1137 cut-off events. [2022-11-02 21:02:20,816 INFO L131 PetriNetUnfolder]: For 16044/16044 co-relation queries the response was YES. [2022-11-02 21:02:20,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7752 conditions, 1137 events. 399/1137 cut-off events. For 16044/16044 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6675 event pairs, 37 based on Foata normal form. 1/1136 useless extension candidates. Maximal degree in co-relation 7617. Up to 677 conditions per place. [2022-11-02 21:02:20,833 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 250 selfloop transitions, 202 changer transitions 23/514 dead transitions. [2022-11-02 21:02:20,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 514 transitions, 6787 flow [2022-11-02 21:02:20,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-02 21:02:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-02 21:02:20,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2426 transitions. [2022-11-02 21:02:20,836 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.561054579093432 [2022-11-02 21:02:20,836 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2426 transitions. [2022-11-02 21:02:20,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2426 transitions. [2022-11-02 21:02:20,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:20,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2426 transitions. [2022-11-02 21:02:20,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 52.73913043478261) internal successors, (2426), 46 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:20,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:20,841 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 94.0) internal successors, (4418), 47 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:20,841 INFO L175 Difference]: Start difference. First operand has 411 places, 411 transitions, 4318 flow. Second operand 46 states and 2426 transitions. [2022-11-02 21:02:20,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 514 transitions, 6787 flow [2022-11-02 21:02:20,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 514 transitions, 6428 flow, removed 116 selfloop flow, removed 33 redundant places. [2022-11-02 21:02:20,952 INFO L231 Difference]: Finished difference. Result has 429 places, 465 transitions, 5557 flow [2022-11-02 21:02:20,952 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4111, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5557, PETRI_PLACES=429, PETRI_TRANSITIONS=465} [2022-11-02 21:02:20,953 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 341 predicate places. [2022-11-02 21:02:20,953 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 465 transitions, 5557 flow [2022-11-02 21:02:20,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:20,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:20,953 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] [2022-11-02 21:02:20,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-02 21:02:20,953 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:20,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 647155168, now seen corresponding path program 52 times [2022-11-02 21:02:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:20,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987155997] [2022-11-02 21:02:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:20,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:21,510 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 21:02:21,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:21,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987155997] [2022-11-02 21:02:21,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987155997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:21,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:21,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:21,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753148601] [2022-11-02 21:02:21,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:21,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:21,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:21,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:21,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:21,512 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:21,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 465 transitions, 5557 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:21,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:21,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:21,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:23,206 INFO L130 PetriNetUnfolder]: 400/1135 cut-off events. [2022-11-02 21:02:23,206 INFO L131 PetriNetUnfolder]: For 18110/18110 co-relation queries the response was YES. [2022-11-02 21:02:23,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 1135 events. 400/1135 cut-off events. For 18110/18110 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6761 event pairs, 37 based on Foata normal form. 1/1134 useless extension candidates. Maximal degree in co-relation 8129. Up to 814 conditions per place. [2022-11-02 21:02:23,219 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 346 selfloop transitions, 83 changer transitions 36/504 dead transitions. [2022-11-02 21:02:23,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 504 transitions, 6888 flow [2022-11-02 21:02:23,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:02:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 21:02:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1857 transitions. [2022-11-02 21:02:23,222 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5644376899696049 [2022-11-02 21:02:23,222 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1857 transitions. [2022-11-02 21:02:23,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1857 transitions. [2022-11-02 21:02:23,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:23,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1857 transitions. [2022-11-02 21:02:23,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.05714285714286) internal successors, (1857), 35 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:23,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:23,227 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:23,227 INFO L175 Difference]: Start difference. First operand has 429 places, 465 transitions, 5557 flow. Second operand 35 states and 1857 transitions. [2022-11-02 21:02:23,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 504 transitions, 6888 flow [2022-11-02 21:02:23,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 504 transitions, 6351 flow, removed 204 selfloop flow, removed 28 redundant places. [2022-11-02 21:02:23,394 INFO L231 Difference]: Finished difference. Result has 440 places, 458 transitions, 5213 flow [2022-11-02 21:02:23,394 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5047, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5213, PETRI_PLACES=440, PETRI_TRANSITIONS=458} [2022-11-02 21:02:23,394 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 352 predicate places. [2022-11-02 21:02:23,395 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 458 transitions, 5213 flow [2022-11-02 21:02:23,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:23,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:23,395 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] [2022-11-02 21:02:23,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-02 21:02:23,396 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:23,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1443786804, now seen corresponding path program 53 times [2022-11-02 21:02:23,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:23,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854083536] [2022-11-02 21:02:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:23,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:23,912 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 21:02:23,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:23,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854083536] [2022-11-02 21:02:23,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854083536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:23,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:23,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:02:23,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233260470] [2022-11-02 21:02:23,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:23,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:02:23,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:23,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:02:23,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:23,916 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:23,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 458 transitions, 5213 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:23,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:23,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:23,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:25,677 INFO L130 PetriNetUnfolder]: 394/1153 cut-off events. [2022-11-02 21:02:25,677 INFO L131 PetriNetUnfolder]: For 16205/16205 co-relation queries the response was YES. [2022-11-02 21:02:25,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8005 conditions, 1153 events. 394/1153 cut-off events. For 16205/16205 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6926 event pairs, 48 based on Foata normal form. 1/1152 useless extension candidates. Maximal degree in co-relation 7857. Up to 791 conditions per place. [2022-11-02 21:02:25,695 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 330 selfloop transitions, 91 changer transitions 36/496 dead transitions. [2022-11-02 21:02:25,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 496 transitions, 6525 flow [2022-11-02 21:02:25,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:02:25,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 21:02:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1855 transitions. [2022-11-02 21:02:25,697 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-02 21:02:25,697 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1855 transitions. [2022-11-02 21:02:25,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1855 transitions. [2022-11-02 21:02:25,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:25,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1855 transitions. [2022-11-02 21:02:25,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.0) internal successors, (1855), 35 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:25,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:25,701 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:25,701 INFO L175 Difference]: Start difference. First operand has 440 places, 458 transitions, 5213 flow. Second operand 35 states and 1855 transitions. [2022-11-02 21:02:25,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 496 transitions, 6525 flow [2022-11-02 21:02:25,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 496 transitions, 6245 flow, removed 37 selfloop flow, removed 37 redundant places. [2022-11-02 21:02:25,829 INFO L231 Difference]: Finished difference. Result has 434 places, 450 transitions, 5141 flow [2022-11-02 21:02:25,830 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4963, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5141, PETRI_PLACES=434, PETRI_TRANSITIONS=450} [2022-11-02 21:02:25,830 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 346 predicate places. [2022-11-02 21:02:25,830 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 450 transitions, 5141 flow [2022-11-02 21:02:25,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:25,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:25,831 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] [2022-11-02 21:02:25,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-02 21:02:25,831 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:25,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:25,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1575800302, now seen corresponding path program 54 times [2022-11-02 21:02:25,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:25,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881228088] [2022-11-02 21:02:25,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:25,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:25,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:26,359 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 21:02:26,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:26,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881228088] [2022-11-02 21:02:26,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881228088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:26,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:26,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:26,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132351645] [2022-11-02 21:02:26,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:26,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:26,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:26,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:26,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:26,361 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:26,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 450 transitions, 5141 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:26,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:26,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:26,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:27,999 INFO L130 PetriNetUnfolder]: 393/1155 cut-off events. [2022-11-02 21:02:27,999 INFO L131 PetriNetUnfolder]: For 14635/14635 co-relation queries the response was YES. [2022-11-02 21:02:28,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7894 conditions, 1155 events. 393/1155 cut-off events. For 14635/14635 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6926 event pairs, 38 based on Foata normal form. 1/1154 useless extension candidates. Maximal degree in co-relation 7750. Up to 778 conditions per place. [2022-11-02 21:02:28,012 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 327 selfloop transitions, 96 changer transitions 36/498 dead transitions. [2022-11-02 21:02:28,012 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 498 transitions, 6589 flow [2022-11-02 21:02:28,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 21:02:28,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 21:02:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1911 transitions. [2022-11-02 21:02:28,015 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5647163120567376 [2022-11-02 21:02:28,015 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1911 transitions. [2022-11-02 21:02:28,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1911 transitions. [2022-11-02 21:02:28,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:28,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1911 transitions. [2022-11-02 21:02:28,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.083333333333336) internal successors, (1911), 36 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:28,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:28,019 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:28,019 INFO L175 Difference]: Start difference. First operand has 434 places, 450 transitions, 5141 flow. Second operand 36 states and 1911 transitions. [2022-11-02 21:02:28,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 498 transitions, 6589 flow [2022-11-02 21:02:28,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 498 transitions, 6280 flow, removed 35 selfloop flow, removed 38 redundant places. [2022-11-02 21:02:28,135 INFO L231 Difference]: Finished difference. Result has 432 places, 450 transitions, 5151 flow [2022-11-02 21:02:28,135 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4874, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5151, PETRI_PLACES=432, PETRI_TRANSITIONS=450} [2022-11-02 21:02:28,135 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 344 predicate places. [2022-11-02 21:02:28,135 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 450 transitions, 5151 flow [2022-11-02 21:02:28,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:28,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:28,136 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] [2022-11-02 21:02:28,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-02 21:02:28,136 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:28,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:28,136 INFO L85 PathProgramCache]: Analyzing trace with hash 797963882, now seen corresponding path program 55 times [2022-11-02 21:02:28,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:28,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662189790] [2022-11-02 21:02:28,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:28,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:28,646 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 21:02:28,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:28,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662189790] [2022-11-02 21:02:28,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662189790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:28,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:28,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:28,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093412745] [2022-11-02 21:02:28,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:28,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:28,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:28,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:28,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:28,649 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:28,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 450 transitions, 5151 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:28,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:28,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:30,418 INFO L130 PetriNetUnfolder]: 396/1163 cut-off events. [2022-11-02 21:02:30,419 INFO L131 PetriNetUnfolder]: For 14631/14631 co-relation queries the response was YES. [2022-11-02 21:02:30,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7953 conditions, 1163 events. 396/1163 cut-off events. For 14631/14631 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7049 event pairs, 44 based on Foata normal form. 1/1162 useless extension candidates. Maximal degree in co-relation 7808. Up to 749 conditions per place. [2022-11-02 21:02:30,436 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 303 selfloop transitions, 139 changer transitions 30/511 dead transitions. [2022-11-02 21:02:30,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 511 transitions, 6929 flow [2022-11-02 21:02:30,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 21:02:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-02 21:02:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2168 transitions. [2022-11-02 21:02:30,439 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5625324338349766 [2022-11-02 21:02:30,439 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2168 transitions. [2022-11-02 21:02:30,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2168 transitions. [2022-11-02 21:02:30,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:30,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2168 transitions. [2022-11-02 21:02:30,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 52.8780487804878) internal successors, (2168), 41 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:30,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:30,443 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 94.0) internal successors, (3948), 42 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:30,443 INFO L175 Difference]: Start difference. First operand has 432 places, 450 transitions, 5151 flow. Second operand 41 states and 2168 transitions. [2022-11-02 21:02:30,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 511 transitions, 6929 flow [2022-11-02 21:02:30,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 511 transitions, 6620 flow, removed 45 selfloop flow, removed 35 redundant places. [2022-11-02 21:02:30,640 INFO L231 Difference]: Finished difference. Result has 438 places, 463 transitions, 5527 flow [2022-11-02 21:02:30,640 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=4888, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=5527, PETRI_PLACES=438, PETRI_TRANSITIONS=463} [2022-11-02 21:02:30,641 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 350 predicate places. [2022-11-02 21:02:30,641 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 463 transitions, 5527 flow [2022-11-02 21:02:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:30,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:30,642 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] [2022-11-02 21:02:30,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-02 21:02:30,642 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:30,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1518851376, now seen corresponding path program 56 times [2022-11-02 21:02:30,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:30,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690752280] [2022-11-02 21:02:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:30,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:30,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:31,211 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 21:02:31,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:31,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690752280] [2022-11-02 21:02:31,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690752280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:31,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:31,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:02:31,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302818002] [2022-11-02 21:02:31,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:31,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:02:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:31,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:02:31,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:31,214 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:31,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 463 transitions, 5527 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:31,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:31,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:31,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:33,141 INFO L130 PetriNetUnfolder]: 394/1163 cut-off events. [2022-11-02 21:02:33,141 INFO L131 PetriNetUnfolder]: For 15326/15326 co-relation queries the response was YES. [2022-11-02 21:02:33,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8059 conditions, 1163 events. 394/1163 cut-off events. For 15326/15326 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7027 event pairs, 46 based on Foata normal form. 1/1162 useless extension candidates. Maximal degree in co-relation 7916. Up to 754 conditions per place. [2022-11-02 21:02:33,155 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 308 selfloop transitions, 126 changer transitions 36/509 dead transitions. [2022-11-02 21:02:33,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 509 transitions, 7001 flow [2022-11-02 21:02:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-02 21:02:33,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-02 21:02:33,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2315 transitions. [2022-11-02 21:02:33,158 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5597195357833655 [2022-11-02 21:02:33,158 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2315 transitions. [2022-11-02 21:02:33,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2315 transitions. [2022-11-02 21:02:33,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:33,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2315 transitions. [2022-11-02 21:02:33,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.61363636363637) internal successors, (2315), 44 states have internal predecessors, (2315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:33,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:33,166 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 94.0) internal successors, (4230), 45 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:33,166 INFO L175 Difference]: Start difference. First operand has 438 places, 463 transitions, 5527 flow. Second operand 44 states and 2315 transitions. [2022-11-02 21:02:33,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 509 transitions, 7001 flow [2022-11-02 21:02:33,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 509 transitions, 6677 flow, removed 91 selfloop flow, removed 34 redundant places. [2022-11-02 21:02:33,384 INFO L231 Difference]: Finished difference. Result has 453 places, 462 transitions, 5606 flow [2022-11-02 21:02:33,385 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5253, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5606, PETRI_PLACES=453, PETRI_TRANSITIONS=462} [2022-11-02 21:02:33,385 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 365 predicate places. [2022-11-02 21:02:33,386 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 462 transitions, 5606 flow [2022-11-02 21:02:33,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:33,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:33,386 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] [2022-11-02 21:02:33,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-02 21:02:33,387 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:33,387 INFO L85 PathProgramCache]: Analyzing trace with hash 351564970, now seen corresponding path program 57 times [2022-11-02 21:02:33,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:33,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305576402] [2022-11-02 21:02:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:33,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:33,869 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 21:02:33,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:33,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305576402] [2022-11-02 21:02:33,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305576402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:33,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:33,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:02:33,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367464831] [2022-11-02 21:02:33,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:33,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:02:33,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:33,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:02:33,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:33,872 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:33,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 462 transitions, 5606 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:33,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:33,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:35,881 INFO L130 PetriNetUnfolder]: 390/1158 cut-off events. [2022-11-02 21:02:35,881 INFO L131 PetriNetUnfolder]: For 14816/14816 co-relation queries the response was YES. [2022-11-02 21:02:35,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8117 conditions, 1158 events. 390/1158 cut-off events. For 14816/14816 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7003 event pairs, 42 based on Foata normal form. 1/1157 useless extension candidates. Maximal degree in co-relation 7967. Up to 741 conditions per place. [2022-11-02 21:02:35,899 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 297 selfloop transitions, 145 changer transitions 28/509 dead transitions. [2022-11-02 21:02:35,899 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 509 transitions, 7168 flow [2022-11-02 21:02:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 21:02:35,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-02 21:02:35,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2263 transitions. [2022-11-02 21:02:35,902 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5598713508164275 [2022-11-02 21:02:35,902 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2263 transitions. [2022-11-02 21:02:35,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2263 transitions. [2022-11-02 21:02:35,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:35,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2263 transitions. [2022-11-02 21:02:35,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 52.627906976744185) internal successors, (2263), 43 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:35,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:35,907 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 94.0) internal successors, (4136), 44 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:35,907 INFO L175 Difference]: Start difference. First operand has 453 places, 462 transitions, 5606 flow. Second operand 43 states and 2263 transitions. [2022-11-02 21:02:35,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 509 transitions, 7168 flow [2022-11-02 21:02:36,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 509 transitions, 6779 flow, removed 45 selfloop flow, removed 41 redundant places. [2022-11-02 21:02:36,093 INFO L231 Difference]: Finished difference. Result has 453 places, 465 transitions, 5709 flow [2022-11-02 21:02:36,094 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5709, PETRI_PLACES=453, PETRI_TRANSITIONS=465} [2022-11-02 21:02:36,094 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 365 predicate places. [2022-11-02 21:02:36,094 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 465 transitions, 5709 flow [2022-11-02 21:02:36,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:36,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:36,095 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] [2022-11-02 21:02:36,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-02 21:02:36,095 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:36,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:36,096 INFO L85 PathProgramCache]: Analyzing trace with hash 465638924, now seen corresponding path program 58 times [2022-11-02 21:02:36,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:36,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983347408] [2022-11-02 21:02:36,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:36,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:36,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:36,677 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 21:02:36,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:36,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983347408] [2022-11-02 21:02:36,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983347408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:36,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:36,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:36,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482429348] [2022-11-02 21:02:36,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:36,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:36,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:36,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:36,679 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:36,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 465 transitions, 5709 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:36,680 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:36,680 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:36,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:38,302 INFO L130 PetriNetUnfolder]: 396/1171 cut-off events. [2022-11-02 21:02:38,302 INFO L131 PetriNetUnfolder]: For 15954/15954 co-relation queries the response was YES. [2022-11-02 21:02:38,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8308 conditions, 1171 events. 396/1171 cut-off events. For 15954/15954 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7084 event pairs, 43 based on Foata normal form. 1/1170 useless extension candidates. Maximal degree in co-relation 8159. Up to 781 conditions per place. [2022-11-02 21:02:38,324 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 347 selfloop transitions, 103 changer transitions 29/518 dead transitions. [2022-11-02 21:02:38,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 518 transitions, 7495 flow [2022-11-02 21:02:38,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:02:38,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:02:38,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1812 transitions. [2022-11-02 21:02:38,326 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5669586983729662 [2022-11-02 21:02:38,326 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1812 transitions. [2022-11-02 21:02:38,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1812 transitions. [2022-11-02 21:02:38,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:38,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1812 transitions. [2022-11-02 21:02:38,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.294117647058826) internal successors, (1812), 34 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:38,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:38,330 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:38,330 INFO L175 Difference]: Start difference. First operand has 453 places, 465 transitions, 5709 flow. Second operand 34 states and 1812 transitions. [2022-11-02 21:02:38,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 518 transitions, 7495 flow [2022-11-02 21:02:38,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 518 transitions, 7189 flow, removed 53 selfloop flow, removed 39 redundant places. [2022-11-02 21:02:38,469 INFO L231 Difference]: Finished difference. Result has 451 places, 476 transitions, 5963 flow [2022-11-02 21:02:38,469 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5439, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5963, PETRI_PLACES=451, PETRI_TRANSITIONS=476} [2022-11-02 21:02:38,469 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 363 predicate places. [2022-11-02 21:02:38,469 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 476 transitions, 5963 flow [2022-11-02 21:02:38,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:38,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:38,470 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] [2022-11-02 21:02:38,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-02 21:02:38,470 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:38,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:38,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1916168682, now seen corresponding path program 59 times [2022-11-02 21:02:38,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:38,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948222707] [2022-11-02 21:02:38,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:38,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:38,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:02:38,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:38,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948222707] [2022-11-02 21:02:38,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948222707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:38,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:38,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:38,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19475061] [2022-11-02 21:02:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:38,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:38,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:38,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:38,993 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:38,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 476 transitions, 5963 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:38,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:38,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:38,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:40,593 INFO L130 PetriNetUnfolder]: 397/1175 cut-off events. [2022-11-02 21:02:40,593 INFO L131 PetriNetUnfolder]: For 17775/17775 co-relation queries the response was YES. [2022-11-02 21:02:40,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8521 conditions, 1175 events. 397/1175 cut-off events. For 17775/17775 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7110 event pairs, 49 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 8369. Up to 797 conditions per place. [2022-11-02 21:02:40,612 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 351 selfloop transitions, 101 changer transitions 27/518 dead transitions. [2022-11-02 21:02:40,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 518 transitions, 7560 flow [2022-11-02 21:02:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:02:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 21:02:40,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1757 transitions. [2022-11-02 21:02:40,615 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5664087685364281 [2022-11-02 21:02:40,615 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1757 transitions. [2022-11-02 21:02:40,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1757 transitions. [2022-11-02 21:02:40,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:40,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1757 transitions. [2022-11-02 21:02:40,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.24242424242424) internal successors, (1757), 33 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:40,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:40,619 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:40,619 INFO L175 Difference]: Start difference. First operand has 451 places, 476 transitions, 5963 flow. Second operand 33 states and 1757 transitions. [2022-11-02 21:02:40,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 518 transitions, 7560 flow [2022-11-02 21:02:40,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 518 transitions, 7102 flow, removed 145 selfloop flow, removed 28 redundant places. [2022-11-02 21:02:40,825 INFO L231 Difference]: Finished difference. Result has 457 places, 480 transitions, 5978 flow [2022-11-02 21:02:40,826 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5588, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=5978, PETRI_PLACES=457, PETRI_TRANSITIONS=480} [2022-11-02 21:02:40,826 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 369 predicate places. [2022-11-02 21:02:40,826 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 480 transitions, 5978 flow [2022-11-02 21:02:40,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:40,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:40,827 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] [2022-11-02 21:02:40,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-02 21:02:40,827 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:40,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:40,828 INFO L85 PathProgramCache]: Analyzing trace with hash 616250522, now seen corresponding path program 60 times [2022-11-02 21:02:40,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:40,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395677661] [2022-11-02 21:02:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:40,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:41,342 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 21:02:41,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:41,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395677661] [2022-11-02 21:02:41,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395677661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:41,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:41,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:02:41,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348600830] [2022-11-02 21:02:41,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:41,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:02:41,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:41,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:02:41,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:41,345 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:41,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 480 transitions, 5978 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:41,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:41,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:41,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:43,178 INFO L130 PetriNetUnfolder]: 399/1187 cut-off events. [2022-11-02 21:02:43,178 INFO L131 PetriNetUnfolder]: For 16812/16812 co-relation queries the response was YES. [2022-11-02 21:02:43,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8466 conditions, 1187 events. 399/1187 cut-off events. For 16812/16812 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7205 event pairs, 55 based on Foata normal form. 1/1186 useless extension candidates. Maximal degree in co-relation 8312. Up to 824 conditions per place. [2022-11-02 21:02:43,194 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 368 selfloop transitions, 94 changer transitions 22/523 dead transitions. [2022-11-02 21:02:43,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 523 transitions, 7445 flow [2022-11-02 21:02:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 21:02:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 21:02:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1900 transitions. [2022-11-02 21:02:43,197 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5614657210401891 [2022-11-02 21:02:43,197 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1900 transitions. [2022-11-02 21:02:43,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1900 transitions. [2022-11-02 21:02:43,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:43,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1900 transitions. [2022-11-02 21:02:43,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.77777777777778) internal successors, (1900), 36 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:43,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:43,204 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:43,205 INFO L175 Difference]: Start difference. First operand has 457 places, 480 transitions, 5978 flow. Second operand 36 states and 1900 transitions. [2022-11-02 21:02:43,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 523 transitions, 7445 flow [2022-11-02 21:02:43,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 523 transitions, 7154 flow, removed 67 selfloop flow, removed 29 redundant places. [2022-11-02 21:02:43,462 INFO L231 Difference]: Finished difference. Result has 469 places, 489 transitions, 6126 flow [2022-11-02 21:02:43,463 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6126, PETRI_PLACES=469, PETRI_TRANSITIONS=489} [2022-11-02 21:02:43,465 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 381 predicate places. [2022-11-02 21:02:43,465 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 489 transitions, 6126 flow [2022-11-02 21:02:43,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:43,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:43,468 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] [2022-11-02 21:02:43,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-02 21:02:43,469 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:43,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:43,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1136938394, now seen corresponding path program 61 times [2022-11-02 21:02:43,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:43,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161156319] [2022-11-02 21:02:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:43,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:43,933 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 21:02:43,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:43,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161156319] [2022-11-02 21:02:43,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161156319] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:43,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:43,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:43,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601582692] [2022-11-02 21:02:43,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:43,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:43,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:43,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:43,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:43,936 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:43,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 489 transitions, 6126 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:43,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:43,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:43,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:45,614 INFO L130 PetriNetUnfolder]: 399/1200 cut-off events. [2022-11-02 21:02:45,614 INFO L131 PetriNetUnfolder]: For 17961/17961 co-relation queries the response was YES. [2022-11-02 21:02:45,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8690 conditions, 1200 events. 399/1200 cut-off events. For 17961/17961 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7364 event pairs, 52 based on Foata normal form. 1/1198 useless extension candidates. Maximal degree in co-relation 8531. Up to 799 conditions per place. [2022-11-02 21:02:45,636 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 357 selfloop transitions, 117 changer transitions 16/529 dead transitions. [2022-11-02 21:02:45,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 529 transitions, 7722 flow [2022-11-02 21:02:45,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:02:45,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 21:02:45,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1859 transitions. [2022-11-02 21:02:45,639 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5650455927051672 [2022-11-02 21:02:45,639 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1859 transitions. [2022-11-02 21:02:45,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1859 transitions. [2022-11-02 21:02:45,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:45,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1859 transitions. [2022-11-02 21:02:45,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.114285714285714) internal successors, (1859), 35 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:45,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:45,643 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:45,643 INFO L175 Difference]: Start difference. First operand has 469 places, 489 transitions, 6126 flow. Second operand 35 states and 1859 transitions. [2022-11-02 21:02:45,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 529 transitions, 7722 flow [2022-11-02 21:02:45,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 529 transitions, 7466 flow, removed 71 selfloop flow, removed 28 redundant places. [2022-11-02 21:02:45,903 INFO L231 Difference]: Finished difference. Result has 477 places, 500 transitions, 6451 flow [2022-11-02 21:02:45,903 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=5912, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6451, PETRI_PLACES=477, PETRI_TRANSITIONS=500} [2022-11-02 21:02:45,904 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 389 predicate places. [2022-11-02 21:02:45,904 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 500 transitions, 6451 flow [2022-11-02 21:02:45,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:45,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:45,905 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] [2022-11-02 21:02:45,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-02 21:02:45,906 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash 403634542, now seen corresponding path program 62 times [2022-11-02 21:02:45,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:45,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343269665] [2022-11-02 21:02:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:45,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:46,497 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 21:02:46,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:46,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343269665] [2022-11-02 21:02:46,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343269665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:46,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:46,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:02:46,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415692833] [2022-11-02 21:02:46,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:46,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:02:46,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:46,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:02:46,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:02:46,500 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:46,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 500 transitions, 6451 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:46,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:46,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:46,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:48,250 INFO L130 PetriNetUnfolder]: 407/1220 cut-off events. [2022-11-02 21:02:48,250 INFO L131 PetriNetUnfolder]: For 19618/19618 co-relation queries the response was YES. [2022-11-02 21:02:48,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8987 conditions, 1220 events. 407/1220 cut-off events. For 19618/19618 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7619 event pairs, 44 based on Foata normal form. 1/1218 useless extension candidates. Maximal degree in co-relation 8826. Up to 862 conditions per place. [2022-11-02 21:02:48,272 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 388 selfloop transitions, 88 changer transitions 26/541 dead transitions. [2022-11-02 21:02:48,272 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 541 transitions, 7939 flow [2022-11-02 21:02:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 21:02:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-02 21:02:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1951 transitions. [2022-11-02 21:02:48,275 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5609545715928694 [2022-11-02 21:02:48,275 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1951 transitions. [2022-11-02 21:02:48,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1951 transitions. [2022-11-02 21:02:48,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:48,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1951 transitions. [2022-11-02 21:02:48,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.729729729729726) internal successors, (1951), 37 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:48,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:48,279 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:48,279 INFO L175 Difference]: Start difference. First operand has 477 places, 500 transitions, 6451 flow. Second operand 37 states and 1951 transitions. [2022-11-02 21:02:48,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 541 transitions, 7939 flow [2022-11-02 21:02:48,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 541 transitions, 7550 flow, removed 114 selfloop flow, removed 26 redundant places. [2022-11-02 21:02:48,470 INFO L231 Difference]: Finished difference. Result has 491 places, 504 transitions, 6388 flow [2022-11-02 21:02:48,471 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6072, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6388, PETRI_PLACES=491, PETRI_TRANSITIONS=504} [2022-11-02 21:02:48,471 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 403 predicate places. [2022-11-02 21:02:48,471 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 504 transitions, 6388 flow [2022-11-02 21:02:48,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:48,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:48,471 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] [2022-11-02 21:02:48,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-02 21:02:48,472 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:48,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:48,472 INFO L85 PathProgramCache]: Analyzing trace with hash -192615180, now seen corresponding path program 63 times [2022-11-02 21:02:48,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:48,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975176963] [2022-11-02 21:02:48,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:48,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:48,976 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 21:02:48,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:48,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975176963] [2022-11-02 21:02:48,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975176963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:48,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:48,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211961873] [2022-11-02 21:02:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:48,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:48,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:48,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:48,979 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:48,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 504 transitions, 6388 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:48,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:48,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:48,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:50,705 INFO L130 PetriNetUnfolder]: 402/1212 cut-off events. [2022-11-02 21:02:50,705 INFO L131 PetriNetUnfolder]: For 19480/19480 co-relation queries the response was YES. [2022-11-02 21:02:50,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8906 conditions, 1212 events. 402/1212 cut-off events. For 19480/19480 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7527 event pairs, 50 based on Foata normal form. 1/1211 useless extension candidates. Maximal degree in co-relation 8740. Up to 802 conditions per place. [2022-11-02 21:02:50,721 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 362 selfloop transitions, 129 changer transitions 19/549 dead transitions. [2022-11-02 21:02:50,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 515 places, 549 transitions, 8028 flow [2022-11-02 21:02:50,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 21:02:50,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-02 21:02:50,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 1808 transitions. [2022-11-02 21:02:50,723 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5657071339173968 [2022-11-02 21:02:50,724 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 1808 transitions. [2022-11-02 21:02:50,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 1808 transitions. [2022-11-02 21:02:50,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:50,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 1808 transitions. [2022-11-02 21:02:50,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 53.1764705882353) internal successors, (1808), 34 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:50,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:50,727 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 94.0) internal successors, (3290), 35 states have internal predecessors, (3290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:50,727 INFO L175 Difference]: Start difference. First operand has 491 places, 504 transitions, 6388 flow. Second operand 34 states and 1808 transitions. [2022-11-02 21:02:50,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 515 places, 549 transitions, 8028 flow [2022-11-02 21:02:50,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 549 transitions, 7790 flow, removed 47 selfloop flow, removed 29 redundant places. [2022-11-02 21:02:50,910 INFO L231 Difference]: Finished difference. Result has 493 places, 511 transitions, 6648 flow [2022-11-02 21:02:50,911 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6166, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=6648, PETRI_PLACES=493, PETRI_TRANSITIONS=511} [2022-11-02 21:02:50,911 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 405 predicate places. [2022-11-02 21:02:50,911 INFO L495 AbstractCegarLoop]: Abstraction has has 493 places, 511 transitions, 6648 flow [2022-11-02 21:02:50,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:50,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:50,912 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] [2022-11-02 21:02:50,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-02 21:02:50,912 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:50,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:50,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1140116508, now seen corresponding path program 64 times [2022-11-02 21:02:50,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:50,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375569425] [2022-11-02 21:02:50,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:50,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:51,371 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 21:02:51,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:51,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375569425] [2022-11-02 21:02:51,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375569425] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:51,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:51,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:51,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616152903] [2022-11-02 21:02:51,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:51,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:51,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:51,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:51,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:51,374 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:51,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 493 places, 511 transitions, 6648 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:51,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:51,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:51,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:53,181 INFO L130 PetriNetUnfolder]: 417/1248 cut-off events. [2022-11-02 21:02:53,181 INFO L131 PetriNetUnfolder]: For 20599/20599 co-relation queries the response was YES. [2022-11-02 21:02:53,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9357 conditions, 1248 events. 417/1248 cut-off events. For 20599/20599 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 7772 event pairs, 47 based on Foata normal form. 1/1246 useless extension candidates. Maximal degree in co-relation 9189. Up to 844 conditions per place. [2022-11-02 21:02:53,204 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 386 selfloop transitions, 118 changer transitions 26/569 dead transitions. [2022-11-02 21:02:53,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 525 places, 569 transitions, 8562 flow [2022-11-02 21:02:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 21:02:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-02 21:02:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2011 transitions. [2022-11-02 21:02:53,207 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.562989921612542 [2022-11-02 21:02:53,207 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2011 transitions. [2022-11-02 21:02:53,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2011 transitions. [2022-11-02 21:02:53,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:53,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2011 transitions. [2022-11-02 21:02:53,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.921052631578945) internal successors, (2011), 38 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:53,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:53,211 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:53,211 INFO L175 Difference]: Start difference. First operand has 493 places, 511 transitions, 6648 flow. Second operand 38 states and 2011 transitions. [2022-11-02 21:02:53,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 525 places, 569 transitions, 8562 flow [2022-11-02 21:02:53,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 569 transitions, 8230 flow, removed 98 selfloop flow, removed 26 redundant places. [2022-11-02 21:02:53,428 INFO L231 Difference]: Finished difference. Result has 510 places, 528 transitions, 7024 flow [2022-11-02 21:02:53,428 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6388, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7024, PETRI_PLACES=510, PETRI_TRANSITIONS=528} [2022-11-02 21:02:53,429 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 422 predicate places. [2022-11-02 21:02:53,429 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 528 transitions, 7024 flow [2022-11-02 21:02:53,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:53,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:53,430 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] [2022-11-02 21:02:53,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-02 21:02:53,430 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:53,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:53,430 INFO L85 PathProgramCache]: Analyzing trace with hash -727190152, now seen corresponding path program 65 times [2022-11-02 21:02:53,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:53,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003468431] [2022-11-02 21:02:53,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:53,953 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 21:02:53,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:53,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003468431] [2022-11-02 21:02:53,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003468431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:53,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:53,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:02:53,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446669302] [2022-11-02 21:02:53,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:53,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:02:53,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:53,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:02:53,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:02:53,956 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:53,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 528 transitions, 7024 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:53,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:53,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:53,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:55,987 INFO L130 PetriNetUnfolder]: 416/1250 cut-off events. [2022-11-02 21:02:55,987 INFO L131 PetriNetUnfolder]: For 21635/21635 co-relation queries the response was YES. [2022-11-02 21:02:56,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9476 conditions, 1250 events. 416/1250 cut-off events. For 21635/21635 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 7848 event pairs, 42 based on Foata normal form. 1/1249 useless extension candidates. Maximal degree in co-relation 9301. Up to 866 conditions per place. [2022-11-02 21:02:56,011 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 400 selfloop transitions, 101 changer transitions 29/569 dead transitions. [2022-11-02 21:02:56,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 569 transitions, 8657 flow [2022-11-02 21:02:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 21:02:56,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-02 21:02:56,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2001 transitions. [2022-11-02 21:02:56,013 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5601903695408734 [2022-11-02 21:02:56,014 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2001 transitions. [2022-11-02 21:02:56,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2001 transitions. [2022-11-02 21:02:56,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:56,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2001 transitions. [2022-11-02 21:02:56,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.6578947368421) internal successors, (2001), 38 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:56,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:56,019 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:56,019 INFO L175 Difference]: Start difference. First operand has 510 places, 528 transitions, 7024 flow. Second operand 38 states and 2001 transitions. [2022-11-02 21:02:56,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 569 transitions, 8657 flow [2022-11-02 21:02:56,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 569 transitions, 8368 flow, removed 59 selfloop flow, removed 31 redundant places. [2022-11-02 21:02:56,230 INFO L231 Difference]: Finished difference. Result has 520 places, 529 transitions, 7104 flow [2022-11-02 21:02:56,230 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6777, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7104, PETRI_PLACES=520, PETRI_TRANSITIONS=529} [2022-11-02 21:02:56,231 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 432 predicate places. [2022-11-02 21:02:56,231 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 529 transitions, 7104 flow [2022-11-02 21:02:56,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:56,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:56,231 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] [2022-11-02 21:02:56,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-02 21:02:56,231 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:56,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:56,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1711408542, now seen corresponding path program 66 times [2022-11-02 21:02:56,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:56,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466384067] [2022-11-02 21:02:56,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:56,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:56,718 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 21:02:56,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:56,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466384067] [2022-11-02 21:02:56,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466384067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:56,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:56,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:02:56,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547157446] [2022-11-02 21:02:56,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:56,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:02:56,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:56,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:02:56,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:02:56,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:56,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 529 transitions, 7104 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:56,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:56,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:56,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:02:58,582 INFO L130 PetriNetUnfolder]: 411/1243 cut-off events. [2022-11-02 21:02:58,582 INFO L131 PetriNetUnfolder]: For 21444/21444 co-relation queries the response was YES. [2022-11-02 21:02:58,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9456 conditions, 1243 events. 411/1243 cut-off events. For 21444/21444 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7769 event pairs, 57 based on Foata normal form. 1/1241 useless extension candidates. Maximal degree in co-relation 9277. Up to 858 conditions per place. [2022-11-02 21:02:58,618 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 397 selfloop transitions, 103 changer transitions 21/560 dead transitions. [2022-11-02 21:02:58,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 560 transitions, 8573 flow [2022-11-02 21:02:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 21:02:58,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 21:02:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1897 transitions. [2022-11-02 21:02:58,620 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5605791962174941 [2022-11-02 21:02:58,620 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1897 transitions. [2022-11-02 21:02:58,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1897 transitions. [2022-11-02 21:02:58,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:02:58,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1897 transitions. [2022-11-02 21:02:58,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.69444444444444) internal successors, (1897), 36 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:58,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:58,623 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:58,623 INFO L175 Difference]: Start difference. First operand has 520 places, 529 transitions, 7104 flow. Second operand 36 states and 1897 transitions. [2022-11-02 21:02:58,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 545 places, 560 transitions, 8573 flow [2022-11-02 21:02:58,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 513 places, 560 transitions, 8240 flow, removed 64 selfloop flow, removed 32 redundant places. [2022-11-02 21:02:58,875 INFO L231 Difference]: Finished difference. Result has 520 places, 528 transitions, 7093 flow [2022-11-02 21:02:58,875 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6799, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7093, PETRI_PLACES=520, PETRI_TRANSITIONS=528} [2022-11-02 21:02:58,875 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 432 predicate places. [2022-11-02 21:02:58,875 INFO L495 AbstractCegarLoop]: Abstraction has has 520 places, 528 transitions, 7093 flow [2022-11-02 21:02:58,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:58,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:02:58,876 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] [2022-11-02 21:02:58,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-02 21:02:58,876 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:02:58,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash -587498504, now seen corresponding path program 67 times [2022-11-02 21:02:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:58,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111731510] [2022-11-02 21:02:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:59,337 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 21:02:59,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:59,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111731510] [2022-11-02 21:02:59,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111731510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:59,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:02:59,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:02:59,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963731438] [2022-11-02 21:02:59,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:59,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:02:59,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:59,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:02:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:02:59,339 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:02:59,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 520 places, 528 transitions, 7093 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:02:59,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:02:59,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:02:59,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:01,264 INFO L130 PetriNetUnfolder]: 419/1272 cut-off events. [2022-11-02 21:03:01,264 INFO L131 PetriNetUnfolder]: For 23177/23177 co-relation queries the response was YES. [2022-11-02 21:03:01,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9821 conditions, 1272 events. 419/1272 cut-off events. For 23177/23177 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8082 event pairs, 52 based on Foata normal form. 1/1270 useless extension candidates. Maximal degree in co-relation 9641. Up to 824 conditions per place. [2022-11-02 21:03:01,288 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 362 selfloop transitions, 158 changer transitions 25/584 dead transitions. [2022-11-02 21:03:01,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 584 transitions, 9072 flow [2022-11-02 21:03:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-02 21:03:01,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-02 21:03:01,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2070 transitions. [2022-11-02 21:03:01,291 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5646481178396072 [2022-11-02 21:03:01,291 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2070 transitions. [2022-11-02 21:03:01,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2070 transitions. [2022-11-02 21:03:01,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:01,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2070 transitions. [2022-11-02 21:03:01,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 53.07692307692308) internal successors, (2070), 39 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:01,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:01,297 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 94.0) internal successors, (3760), 40 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:01,297 INFO L175 Difference]: Start difference. First operand has 520 places, 528 transitions, 7093 flow. Second operand 39 states and 2070 transitions. [2022-11-02 21:03:01,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 584 transitions, 9072 flow [2022-11-02 21:03:01,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 584 transitions, 8708 flow, removed 81 selfloop flow, removed 34 redundant places. [2022-11-02 21:03:01,642 INFO L231 Difference]: Finished difference. Result has 526 places, 541 transitions, 7524 flow [2022-11-02 21:03:01,643 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=6795, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=7524, PETRI_PLACES=526, PETRI_TRANSITIONS=541} [2022-11-02 21:03:01,643 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 438 predicate places. [2022-11-02 21:03:01,643 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 541 transitions, 7524 flow [2022-11-02 21:03:01,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:01,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:01,649 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] [2022-11-02 21:03:01,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-02 21:03:01,650 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash 230802876, now seen corresponding path program 68 times [2022-11-02 21:03:01,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:01,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000540459] [2022-11-02 21:03:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:02,130 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 21:03:02,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:02,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000540459] [2022-11-02 21:03:02,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000540459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:02,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:02,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:03:02,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541410665] [2022-11-02 21:03:02,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:02,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:03:02,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:02,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:03:02,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:03:02,133 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:02,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 541 transitions, 7524 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:02,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:02,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:02,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:04,054 INFO L130 PetriNetUnfolder]: 420/1288 cut-off events. [2022-11-02 21:03:04,054 INFO L131 PetriNetUnfolder]: For 23492/23492 co-relation queries the response was YES. [2022-11-02 21:03:04,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9988 conditions, 1288 events. 420/1288 cut-off events. For 23492/23492 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 8308 event pairs, 43 based on Foata normal form. 1/1287 useless extension candidates. Maximal degree in co-relation 9805. Up to 879 conditions per place. [2022-11-02 21:03:04,090 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 420 selfloop transitions, 106 changer transitions 22/587 dead transitions. [2022-11-02 21:03:04,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 587 transitions, 9276 flow [2022-11-02 21:03:04,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:03:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 21:03:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1858 transitions. [2022-11-02 21:03:04,092 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.564741641337386 [2022-11-02 21:03:04,092 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1858 transitions. [2022-11-02 21:03:04,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1858 transitions. [2022-11-02 21:03:04,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:04,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1858 transitions. [2022-11-02 21:03:04,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 53.08571428571429) internal successors, (1858), 35 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:04,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:04,097 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:04,098 INFO L175 Difference]: Start difference. First operand has 526 places, 541 transitions, 7524 flow. Second operand 35 states and 1858 transitions. [2022-11-02 21:03:04,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 587 transitions, 9276 flow [2022-11-02 21:03:04,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 587 transitions, 8872 flow, removed 103 selfloop flow, removed 29 redundant places. [2022-11-02 21:03:04,420 INFO L231 Difference]: Finished difference. Result has 538 places, 553 transitions, 7662 flow [2022-11-02 21:03:04,420 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7142, PETRI_DIFFERENCE_MINUEND_PLACES=491, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7662, PETRI_PLACES=538, PETRI_TRANSITIONS=553} [2022-11-02 21:03:04,421 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 450 predicate places. [2022-11-02 21:03:04,421 INFO L495 AbstractCegarLoop]: Abstraction has has 538 places, 553 transitions, 7662 flow [2022-11-02 21:03:04,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:04,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:04,421 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] [2022-11-02 21:03:04,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-02 21:03:04,421 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:04,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:04,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1595761890, now seen corresponding path program 69 times [2022-11-02 21:03:04,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:04,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058144561] [2022-11-02 21:03:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:04,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:04,919 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 21:03:04,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:04,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058144561] [2022-11-02 21:03:04,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058144561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:04,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:04,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:03:04,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433835634] [2022-11-02 21:03:04,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:04,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:03:04,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:04,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:03:04,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:03:04,922 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:04,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 553 transitions, 7662 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:04,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:04,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:04,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:06,633 INFO L130 PetriNetUnfolder]: 415/1274 cut-off events. [2022-11-02 21:03:06,634 INFO L131 PetriNetUnfolder]: For 23561/23561 co-relation queries the response was YES. [2022-11-02 21:03:06,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10013 conditions, 1274 events. 415/1274 cut-off events. For 23561/23561 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8196 event pairs, 45 based on Foata normal form. 1/1272 useless extension candidates. Maximal degree in co-relation 9823. Up to 858 conditions per place. [2022-11-02 21:03:06,654 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 407 selfloop transitions, 125 changer transitions 20/591 dead transitions. [2022-11-02 21:03:06,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 563 places, 591 transitions, 9359 flow [2022-11-02 21:03:06,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:03:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:03:06,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1707 transitions. [2022-11-02 21:03:06,656 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5674867021276596 [2022-11-02 21:03:06,656 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1707 transitions. [2022-11-02 21:03:06,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1707 transitions. [2022-11-02 21:03:06,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:06,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1707 transitions. [2022-11-02 21:03:06,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.34375) internal successors, (1707), 32 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:06,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:06,659 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:06,659 INFO L175 Difference]: Start difference. First operand has 538 places, 553 transitions, 7662 flow. Second operand 32 states and 1707 transitions. [2022-11-02 21:03:06,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 563 places, 591 transitions, 9359 flow [2022-11-02 21:03:07,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 540 places, 591 transitions, 9110 flow, removed 77 selfloop flow, removed 23 redundant places. [2022-11-02 21:03:07,061 INFO L231 Difference]: Finished difference. Result has 547 places, 559 transitions, 7895 flow [2022-11-02 21:03:07,062 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7449, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7895, PETRI_PLACES=547, PETRI_TRANSITIONS=559} [2022-11-02 21:03:07,062 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 459 predicate places. [2022-11-02 21:03:07,062 INFO L495 AbstractCegarLoop]: Abstraction has has 547 places, 559 transitions, 7895 flow [2022-11-02 21:03:07,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:07,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:07,063 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] [2022-11-02 21:03:07,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-02 21:03:07,063 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:07,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:07,063 INFO L85 PathProgramCache]: Analyzing trace with hash -729630394, now seen corresponding path program 70 times [2022-11-02 21:03:07,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:07,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426485219] [2022-11-02 21:03:07,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:07,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:07,522 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 21:03:07,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:07,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426485219] [2022-11-02 21:03:07,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426485219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:07,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:07,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:03:07,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482671554] [2022-11-02 21:03:07,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:07,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:03:07,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:07,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:03:07,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:03:07,525 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:07,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 547 places, 559 transitions, 7895 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:07,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:07,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:07,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:09,309 INFO L130 PetriNetUnfolder]: 414/1253 cut-off events. [2022-11-02 21:03:09,309 INFO L131 PetriNetUnfolder]: For 24003/24003 co-relation queries the response was YES. [2022-11-02 21:03:09,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9999 conditions, 1253 events. 414/1253 cut-off events. For 24003/24003 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7986 event pairs, 52 based on Foata normal form. 1/1251 useless extension candidates. Maximal degree in co-relation 9807. Up to 881 conditions per place. [2022-11-02 21:03:09,343 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 427 selfloop transitions, 100 changer transitions 19/585 dead transitions. [2022-11-02 21:03:09,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 585 transitions, 9197 flow [2022-11-02 21:03:09,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:03:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 21:03:09,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1749 transitions. [2022-11-02 21:03:09,345 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5638297872340425 [2022-11-02 21:03:09,345 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1749 transitions. [2022-11-02 21:03:09,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1749 transitions. [2022-11-02 21:03:09,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:09,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1749 transitions. [2022-11-02 21:03:09,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.0) internal successors, (1749), 33 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:09,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:09,348 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:09,348 INFO L175 Difference]: Start difference. First operand has 547 places, 559 transitions, 7895 flow. Second operand 33 states and 1749 transitions. [2022-11-02 21:03:09,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 585 transitions, 9197 flow [2022-11-02 21:03:09,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 585 transitions, 8818 flow, removed 85 selfloop flow, removed 27 redundant places. [2022-11-02 21:03:09,708 INFO L231 Difference]: Finished difference. Result has 554 places, 556 transitions, 7749 flow [2022-11-02 21:03:09,709 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7554, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=559, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7749, PETRI_PLACES=554, PETRI_TRANSITIONS=556} [2022-11-02 21:03:09,709 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 466 predicate places. [2022-11-02 21:03:09,709 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 556 transitions, 7749 flow [2022-11-02 21:03:09,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:09,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:09,709 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] [2022-11-02 21:03:09,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-02 21:03:09,710 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:09,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:09,710 INFO L85 PathProgramCache]: Analyzing trace with hash 912428086, now seen corresponding path program 71 times [2022-11-02 21:03:09,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:09,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180899834] [2022-11-02 21:03:09,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:09,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:10,131 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 21:03:10,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:10,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180899834] [2022-11-02 21:03:10,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180899834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:10,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:10,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:03:10,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238175967] [2022-11-02 21:03:10,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:10,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:03:10,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:10,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:03:10,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:03:10,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:10,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 556 transitions, 7749 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:10,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:10,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:10,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:11,987 INFO L130 PetriNetUnfolder]: 412/1262 cut-off events. [2022-11-02 21:03:11,987 INFO L131 PetriNetUnfolder]: For 22579/22579 co-relation queries the response was YES. [2022-11-02 21:03:12,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9841 conditions, 1262 events. 412/1262 cut-off events. For 22579/22579 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8041 event pairs, 56 based on Foata normal form. 1/1260 useless extension candidates. Maximal degree in co-relation 9647. Up to 870 conditions per place. [2022-11-02 21:03:12,010 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 412 selfloop transitions, 113 changer transitions 22/586 dead transitions. [2022-11-02 21:03:12,010 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 586 transitions, 9050 flow [2022-11-02 21:03:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 21:03:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 21:03:12,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1904 transitions. [2022-11-02 21:03:12,013 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5626477541371159 [2022-11-02 21:03:12,013 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1904 transitions. [2022-11-02 21:03:12,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1904 transitions. [2022-11-02 21:03:12,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:12,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1904 transitions. [2022-11-02 21:03:12,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.888888888888886) internal successors, (1904), 36 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,016 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,016 INFO L175 Difference]: Start difference. First operand has 554 places, 556 transitions, 7749 flow. Second operand 36 states and 1904 transitions. [2022-11-02 21:03:12,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 586 transitions, 9050 flow [2022-11-02 21:03:12,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 586 transitions, 8778 flow, removed 16 selfloop flow, removed 34 redundant places. [2022-11-02 21:03:12,266 INFO L231 Difference]: Finished difference. Result has 554 places, 550 transitions, 7635 flow [2022-11-02 21:03:12,266 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7489, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7635, PETRI_PLACES=554, PETRI_TRANSITIONS=550} [2022-11-02 21:03:12,267 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 466 predicate places. [2022-11-02 21:03:12,267 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 550 transitions, 7635 flow [2022-11-02 21:03:12,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:12,268 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] [2022-11-02 21:03:12,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-02 21:03:12,268 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:12,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:12,269 INFO L85 PathProgramCache]: Analyzing trace with hash 311767026, now seen corresponding path program 72 times [2022-11-02 21:03:12,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:12,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777370856] [2022-11-02 21:03:12,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:12,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:12,741 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 21:03:12,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:12,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777370856] [2022-11-02 21:03:12,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777370856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:12,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:12,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:03:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702739145] [2022-11-02 21:03:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:12,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:03:12,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:12,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:03:12,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:12,744 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:12,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 550 transitions, 7635 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:12,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:12,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:12,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:14,631 INFO L130 PetriNetUnfolder]: 416/1268 cut-off events. [2022-11-02 21:03:14,631 INFO L131 PetriNetUnfolder]: For 23432/23432 co-relation queries the response was YES. [2022-11-02 21:03:14,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9988 conditions, 1268 events. 416/1268 cut-off events. For 23432/23432 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8030 event pairs, 54 based on Foata normal form. 1/1267 useless extension candidates. Maximal degree in co-relation 9796. Up to 868 conditions per place. [2022-11-02 21:03:14,656 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 416 selfloop transitions, 110 changer transitions 26/591 dead transitions. [2022-11-02 21:03:14,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 591 transitions, 9322 flow [2022-11-02 21:03:14,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-02 21:03:14,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-02 21:03:14,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1957 transitions. [2022-11-02 21:03:14,658 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5626797009775734 [2022-11-02 21:03:14,658 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 1957 transitions. [2022-11-02 21:03:14,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 1957 transitions. [2022-11-02 21:03:14,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:14,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 1957 transitions. [2022-11-02 21:03:14,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 52.891891891891895) internal successors, (1957), 37 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:14,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:14,662 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 94.0) internal successors, (3572), 38 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:14,662 INFO L175 Difference]: Start difference. First operand has 554 places, 550 transitions, 7635 flow. Second operand 37 states and 1957 transitions. [2022-11-02 21:03:14,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 591 transitions, 9322 flow [2022-11-02 21:03:14,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 591 transitions, 9019 flow, removed 16 selfloop flow, removed 35 redundant places. [2022-11-02 21:03:14,981 INFO L231 Difference]: Finished difference. Result has 557 places, 554 transitions, 7769 flow [2022-11-02 21:03:14,982 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7350, PETRI_DIFFERENCE_MINUEND_PLACES=511, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7769, PETRI_PLACES=557, PETRI_TRANSITIONS=554} [2022-11-02 21:03:14,983 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 469 predicate places. [2022-11-02 21:03:14,983 INFO L495 AbstractCegarLoop]: Abstraction has has 557 places, 554 transitions, 7769 flow [2022-11-02 21:03:14,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:14,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:14,983 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] [2022-11-02 21:03:14,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-02 21:03:14,984 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:14,984 INFO L85 PathProgramCache]: Analyzing trace with hash -470816300, now seen corresponding path program 73 times [2022-11-02 21:03:14,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:14,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359630318] [2022-11-02 21:03:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:14,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:15,479 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 21:03:15,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:15,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359630318] [2022-11-02 21:03:15,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359630318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:15,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:15,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 21:03:15,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128960294] [2022-11-02 21:03:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:15,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:03:15,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:03:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:03:15,482 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:15,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 554 transitions, 7769 flow. Second operand has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:15,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:15,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:15,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:17,107 INFO L130 PetriNetUnfolder]: 407/1244 cut-off events. [2022-11-02 21:03:17,107 INFO L131 PetriNetUnfolder]: For 22308/22308 co-relation queries the response was YES. [2022-11-02 21:03:17,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9724 conditions, 1244 events. 407/1244 cut-off events. For 22308/22308 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7839 event pairs, 53 based on Foata normal form. 1/1243 useless extension candidates. Maximal degree in co-relation 9530. Up to 837 conditions per place. [2022-11-02 21:03:17,138 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 396 selfloop transitions, 128 changer transitions 15/578 dead transitions. [2022-11-02 21:03:17,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 578 transitions, 8996 flow [2022-11-02 21:03:17,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 21:03:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-02 21:03:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1705 transitions. [2022-11-02 21:03:17,140 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5668218085106383 [2022-11-02 21:03:17,140 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1705 transitions. [2022-11-02 21:03:17,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1705 transitions. [2022-11-02 21:03:17,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:17,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1705 transitions. [2022-11-02 21:03:17,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 53.28125) internal successors, (1705), 32 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,143 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 94.0) internal successors, (3102), 33 states have internal predecessors, (3102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,143 INFO L175 Difference]: Start difference. First operand has 557 places, 554 transitions, 7769 flow. Second operand 32 states and 1705 transitions. [2022-11-02 21:03:17,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 578 transitions, 8996 flow [2022-11-02 21:03:17,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 578 transitions, 8680 flow, removed 63 selfloop flow, removed 30 redundant places. [2022-11-02 21:03:17,517 INFO L231 Difference]: Finished difference. Result has 554 places, 552 transitions, 7760 flow [2022-11-02 21:03:17,518 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7461, PETRI_DIFFERENCE_MINUEND_PLACES=518, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7760, PETRI_PLACES=554, PETRI_TRANSITIONS=552} [2022-11-02 21:03:17,518 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 466 predicate places. [2022-11-02 21:03:17,518 INFO L495 AbstractCegarLoop]: Abstraction has has 554 places, 552 transitions, 7760 flow [2022-11-02 21:03:17,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 51.22222222222222) internal successors, (922), 18 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:17,518 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] [2022-11-02 21:03:17,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-02 21:03:17,519 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash 316454672, now seen corresponding path program 74 times [2022-11-02 21:03:17,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:17,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669946388] [2022-11-02 21:03:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:17,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:17,971 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 21:03:17,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:17,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669946388] [2022-11-02 21:03:17,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669946388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:17,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:17,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:03:17,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514094213] [2022-11-02 21:03:17,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:17,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:03:17,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:03:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:03:17,974 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:17,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 552 transitions, 7760 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:17,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:17,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:17,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:19,690 INFO L130 PetriNetUnfolder]: 410/1254 cut-off events. [2022-11-02 21:03:19,691 INFO L131 PetriNetUnfolder]: For 22433/22433 co-relation queries the response was YES. [2022-11-02 21:03:19,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9887 conditions, 1254 events. 410/1254 cut-off events. For 22433/22433 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 7936 event pairs, 50 based on Foata normal form. 1/1253 useless extension candidates. Maximal degree in co-relation 9694. Up to 838 conditions per place. [2022-11-02 21:03:19,728 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 396 selfloop transitions, 131 changer transitions 19/585 dead transitions. [2022-11-02 21:03:19,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 585 transitions, 9308 flow [2022-11-02 21:03:19,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:03:19,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-02 21:03:19,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1758 transitions. [2022-11-02 21:03:19,730 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5667311411992263 [2022-11-02 21:03:19,730 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1758 transitions. [2022-11-02 21:03:19,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1758 transitions. [2022-11-02 21:03:19,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:19,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1758 transitions. [2022-11-02 21:03:19,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 53.27272727272727) internal successors, (1758), 33 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:19,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:19,734 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 94.0) internal successors, (3196), 34 states have internal predecessors, (3196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:19,734 INFO L175 Difference]: Start difference. First operand has 554 places, 552 transitions, 7760 flow. Second operand 33 states and 1758 transitions. [2022-11-02 21:03:19,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 585 transitions, 9308 flow [2022-11-02 21:03:20,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 549 places, 585 transitions, 8972 flow, removed 13 selfloop flow, removed 32 redundant places. [2022-11-02 21:03:20,111 INFO L231 Difference]: Finished difference. Result has 556 places, 554 transitions, 7832 flow [2022-11-02 21:03:20,112 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7441, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=7832, PETRI_PLACES=556, PETRI_TRANSITIONS=554} [2022-11-02 21:03:20,112 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 468 predicate places. [2022-11-02 21:03:20,112 INFO L495 AbstractCegarLoop]: Abstraction has has 556 places, 554 transitions, 7832 flow [2022-11-02 21:03:20,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:20,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:20,113 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] [2022-11-02 21:03:20,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-02 21:03:20,113 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:20,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:20,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1539815048, now seen corresponding path program 75 times [2022-11-02 21:03:20,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:20,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810465307] [2022-11-02 21:03:20,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:20,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:20,610 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 21:03:20,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:20,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810465307] [2022-11-02 21:03:20,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810465307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:20,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:20,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:03:20,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28901018] [2022-11-02 21:03:20,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:20,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:03:20,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:20,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:03:20,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:03:20,612 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:20,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 554 transitions, 7832 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:20,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:20,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:20,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:22,578 INFO L130 PetriNetUnfolder]: 406/1242 cut-off events. [2022-11-02 21:03:22,578 INFO L131 PetriNetUnfolder]: For 22597/22597 co-relation queries the response was YES. [2022-11-02 21:03:22,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9815 conditions, 1242 events. 406/1242 cut-off events. For 22597/22597 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7857 event pairs, 46 based on Foata normal form. 1/1241 useless extension candidates. Maximal degree in co-relation 9621. Up to 819 conditions per place. [2022-11-02 21:03:22,602 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 384 selfloop transitions, 133 changer transitions 31/587 dead transitions. [2022-11-02 21:03:22,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 587 transitions, 9228 flow [2022-11-02 21:03:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 21:03:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 21:03:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1911 transitions. [2022-11-02 21:03:22,605 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5647163120567376 [2022-11-02 21:03:22,605 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1911 transitions. [2022-11-02 21:03:22,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1911 transitions. [2022-11-02 21:03:22,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:22,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1911 transitions. [2022-11-02 21:03:22,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 53.083333333333336) internal successors, (1911), 36 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:22,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:22,611 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:22,611 INFO L175 Difference]: Start difference. First operand has 556 places, 554 transitions, 7832 flow. Second operand 36 states and 1911 transitions. [2022-11-02 21:03:22,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 587 transitions, 9228 flow [2022-11-02 21:03:22,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 587 transitions, 8915 flow, removed 51 selfloop flow, removed 30 redundant places. [2022-11-02 21:03:22,904 INFO L231 Difference]: Finished difference. Result has 563 places, 542 transitions, 7687 flow [2022-11-02 21:03:22,904 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7531, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7687, PETRI_PLACES=563, PETRI_TRANSITIONS=542} [2022-11-02 21:03:22,905 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 475 predicate places. [2022-11-02 21:03:22,905 INFO L495 AbstractCegarLoop]: Abstraction has has 563 places, 542 transitions, 7687 flow [2022-11-02 21:03:22,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:22,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:22,905 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] [2022-11-02 21:03:22,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-02 21:03:22,905 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:22,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1017056684, now seen corresponding path program 76 times [2022-11-02 21:03:22,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:22,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054860944] [2022-11-02 21:03:22,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:22,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:23,388 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 21:03:23,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:23,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054860944] [2022-11-02 21:03:23,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054860944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:23,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:23,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:03:23,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269937207] [2022-11-02 21:03:23,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:23,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:03:23,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:23,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:03:23,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:23,390 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:23,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 542 transitions, 7687 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:23,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:23,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:23,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:25,287 INFO L130 PetriNetUnfolder]: 400/1235 cut-off events. [2022-11-02 21:03:25,287 INFO L131 PetriNetUnfolder]: For 22693/22693 co-relation queries the response was YES. [2022-11-02 21:03:25,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9807 conditions, 1235 events. 400/1235 cut-off events. For 22693/22693 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7770 event pairs, 48 based on Foata normal form. 1/1234 useless extension candidates. Maximal degree in co-relation 9613. Up to 837 conditions per place. [2022-11-02 21:03:25,307 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 401 selfloop transitions, 111 changer transitions 22/573 dead transitions. [2022-11-02 21:03:25,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 573 transitions, 9205 flow [2022-11-02 21:03:25,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-02 21:03:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-02 21:03:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1853 transitions. [2022-11-02 21:03:25,310 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5632218844984802 [2022-11-02 21:03:25,310 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1853 transitions. [2022-11-02 21:03:25,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1853 transitions. [2022-11-02 21:03:25,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:25,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1853 transitions. [2022-11-02 21:03:25,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 52.94285714285714) internal successors, (1853), 35 states have internal predecessors, (1853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:25,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:25,314 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 94.0) internal successors, (3384), 36 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:25,314 INFO L175 Difference]: Start difference. First operand has 563 places, 542 transitions, 7687 flow. Second operand 35 states and 1853 transitions. [2022-11-02 21:03:25,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 573 transitions, 9205 flow [2022-11-02 21:03:25,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 573 transitions, 8818 flow, removed 23 selfloop flow, removed 38 redundant places. [2022-11-02 21:03:25,563 INFO L231 Difference]: Finished difference. Result has 555 places, 540 transitions, 7621 flow [2022-11-02 21:03:25,564 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7318, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7621, PETRI_PLACES=555, PETRI_TRANSITIONS=540} [2022-11-02 21:03:25,564 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-02 21:03:25,564 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 540 transitions, 7621 flow [2022-11-02 21:03:25,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:25,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:25,565 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] [2022-11-02 21:03:25,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-02 21:03:25,565 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:25,566 INFO L85 PathProgramCache]: Analyzing trace with hash 534211988, now seen corresponding path program 77 times [2022-11-02 21:03:25,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:25,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281704144] [2022-11-02 21:03:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:26,038 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 21:03:26,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:26,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281704144] [2022-11-02 21:03:26,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281704144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:26,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:26,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-02 21:03:26,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676475819] [2022-11-02 21:03:26,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:26,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-02 21:03:26,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:26,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-02 21:03:26,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-02 21:03:26,041 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:26,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 540 transitions, 7621 flow. Second operand has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:26,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:26,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:26,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:27,762 INFO L130 PetriNetUnfolder]: 396/1221 cut-off events. [2022-11-02 21:03:27,763 INFO L131 PetriNetUnfolder]: For 23068/23068 co-relation queries the response was YES. [2022-11-02 21:03:27,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9650 conditions, 1221 events. 396/1221 cut-off events. For 23068/23068 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7643 event pairs, 46 based on Foata normal form. 1/1220 useless extension candidates. Maximal degree in co-relation 9459. Up to 815 conditions per place. [2022-11-02 21:03:27,795 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 388 selfloop transitions, 128 changer transitions 17/572 dead transitions. [2022-11-02 21:03:27,795 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 572 transitions, 9038 flow [2022-11-02 21:03:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 21:03:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-02 21:03:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 1906 transitions. [2022-11-02 21:03:27,798 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5632387706855791 [2022-11-02 21:03:27,798 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 1906 transitions. [2022-11-02 21:03:27,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 1906 transitions. [2022-11-02 21:03:27,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:27,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 1906 transitions. [2022-11-02 21:03:27,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 52.94444444444444) internal successors, (1906), 36 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:27,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:27,804 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 94.0) internal successors, (3478), 37 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:27,804 INFO L175 Difference]: Start difference. First operand has 555 places, 540 transitions, 7621 flow. Second operand 36 states and 1906 transitions. [2022-11-02 21:03:27,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 572 transitions, 9038 flow [2022-11-02 21:03:28,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 548 places, 572 transitions, 8689 flow, removed 60 selfloop flow, removed 34 redundant places. [2022-11-02 21:03:28,165 INFO L231 Difference]: Finished difference. Result has 555 places, 543 transitions, 7687 flow [2022-11-02 21:03:28,165 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7302, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7687, PETRI_PLACES=555, PETRI_TRANSITIONS=543} [2022-11-02 21:03:28,166 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 467 predicate places. [2022-11-02 21:03:28,166 INFO L495 AbstractCegarLoop]: Abstraction has has 555 places, 543 transitions, 7687 flow [2022-11-02 21:03:28,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 51.10526315789474) internal successors, (971), 19 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:28,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:28,167 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] [2022-11-02 21:03:28,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-02 21:03:28,167 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:28,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash 788101708, now seen corresponding path program 78 times [2022-11-02 21:03:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:28,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109839296] [2022-11-02 21:03:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:28,640 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 21:03:28,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:28,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109839296] [2022-11-02 21:03:28,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109839296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:28,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:28,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:03:28,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633671598] [2022-11-02 21:03:28,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:28,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:03:28,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:03:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:28,643 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:28,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 543 transitions, 7687 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:28,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:28,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:28,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:30,639 INFO L130 PetriNetUnfolder]: 403/1254 cut-off events. [2022-11-02 21:03:30,639 INFO L131 PetriNetUnfolder]: For 22584/22584 co-relation queries the response was YES. [2022-11-02 21:03:30,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9865 conditions, 1254 events. 403/1254 cut-off events. For 22584/22584 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 8014 event pairs, 55 based on Foata normal form. 1/1253 useless extension candidates. Maximal degree in co-relation 9675. Up to 849 conditions per place. [2022-11-02 21:03:30,671 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 406 selfloop transitions, 118 changer transitions 24/587 dead transitions. [2022-11-02 21:03:30,671 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 587 transitions, 9435 flow [2022-11-02 21:03:30,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-02 21:03:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-02 21:03:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2008 transitions. [2022-11-02 21:03:30,673 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5621500559910414 [2022-11-02 21:03:30,673 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2008 transitions. [2022-11-02 21:03:30,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2008 transitions. [2022-11-02 21:03:30,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:30,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2008 transitions. [2022-11-02 21:03:30,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 52.8421052631579) internal successors, (2008), 38 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:30,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:30,677 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 94.0) internal successors, (3666), 39 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:30,678 INFO L175 Difference]: Start difference. First operand has 555 places, 543 transitions, 7687 flow. Second operand 38 states and 2008 transitions. [2022-11-02 21:03:30,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 587 transitions, 9435 flow [2022-11-02 21:03:30,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 587 transitions, 9129 flow, removed 54 selfloop flow, removed 28 redundant places. [2022-11-02 21:03:30,939 INFO L231 Difference]: Finished difference. Result has 569 places, 548 transitions, 7854 flow [2022-11-02 21:03:30,940 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7395, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7854, PETRI_PLACES=569, PETRI_TRANSITIONS=548} [2022-11-02 21:03:30,940 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 481 predicate places. [2022-11-02 21:03:30,940 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 548 transitions, 7854 flow [2022-11-02 21:03:30,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:30,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:30,941 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] [2022-11-02 21:03:30,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-02 21:03:30,941 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:30,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:30,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1535289744, now seen corresponding path program 79 times [2022-11-02 21:03:30,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:30,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490169302] [2022-11-02 21:03:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:30,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:31,539 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 21:03:31,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:31,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490169302] [2022-11-02 21:03:31,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490169302] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:31,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:31,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:03:31,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95337208] [2022-11-02 21:03:31,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:31,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:03:31,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:31,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:03:31,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:03:31,541 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:31,542 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 548 transitions, 7854 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:31,542 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:31,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:31,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:34,090 INFO L130 PetriNetUnfolder]: 440/1394 cut-off events. [2022-11-02 21:03:34,091 INFO L131 PetriNetUnfolder]: For 28467/28467 co-relation queries the response was YES. [2022-11-02 21:03:34,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11007 conditions, 1394 events. 440/1394 cut-off events. For 28467/28467 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9273 event pairs, 44 based on Foata normal form. 1/1393 useless extension candidates. Maximal degree in co-relation 10809. Up to 853 conditions per place. [2022-11-02 21:03:34,136 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 415 selfloop transitions, 186 changer transitions 22/662 dead transitions. [2022-11-02 21:03:34,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 662 transitions, 10972 flow [2022-11-02 21:03:34,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-02 21:03:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-02 21:03:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 2575 transitions. [2022-11-02 21:03:34,141 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5590534085974815 [2022-11-02 21:03:34,141 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 2575 transitions. [2022-11-02 21:03:34,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 2575 transitions. [2022-11-02 21:03:34,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:34,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 2575 transitions. [2022-11-02 21:03:34,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 52.55102040816327) internal successors, (2575), 49 states have internal predecessors, (2575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:34,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:34,152 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 94.0) internal successors, (4700), 50 states have internal predecessors, (4700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:34,152 INFO L175 Difference]: Start difference. First operand has 569 places, 548 transitions, 7854 flow. Second operand 49 states and 2575 transitions. [2022-11-02 21:03:34,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 662 transitions, 10972 flow [2022-11-02 21:03:34,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 662 transitions, 10652 flow, removed 87 selfloop flow, removed 31 redundant places. [2022-11-02 21:03:34,479 INFO L231 Difference]: Finished difference. Result has 591 places, 612 transitions, 9293 flow [2022-11-02 21:03:34,479 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=7612, PETRI_DIFFERENCE_MINUEND_PLACES=532, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=9293, PETRI_PLACES=591, PETRI_TRANSITIONS=612} [2022-11-02 21:03:34,480 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 503 predicate places. [2022-11-02 21:03:34,480 INFO L495 AbstractCegarLoop]: Abstraction has has 591 places, 612 transitions, 9293 flow [2022-11-02 21:03:34,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:34,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:34,481 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] [2022-11-02 21:03:34,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-02 21:03:34,481 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:34,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:34,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1685196356, now seen corresponding path program 80 times [2022-11-02 21:03:34,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:34,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307894586] [2022-11-02 21:03:34,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:34,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:35,147 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 21:03:35,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:35,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307894586] [2022-11-02 21:03:35,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307894586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:35,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:35,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-11-02 21:03:35,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310648493] [2022-11-02 21:03:35,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:35,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 21:03:35,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 21:03:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2022-11-02 21:03:35,149 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:35,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 612 transitions, 9293 flow. Second operand has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:35,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:35,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:35,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:37,901 INFO L130 PetriNetUnfolder]: 435/1389 cut-off events. [2022-11-02 21:03:37,901 INFO L131 PetriNetUnfolder]: For 28523/28523 co-relation queries the response was YES. [2022-11-02 21:03:37,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11256 conditions, 1389 events. 435/1389 cut-off events. For 28523/28523 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 9286 event pairs, 42 based on Foata normal form. 1/1388 useless extension candidates. Maximal degree in co-relation 11055. Up to 886 conditions per place. [2022-11-02 21:03:37,926 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 451 selfloop transitions, 147 changer transitions 24/661 dead transitions. [2022-11-02 21:03:37,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 661 transitions, 11254 flow [2022-11-02 21:03:37,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-02 21:03:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-02 21:03:37,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2663 transitions. [2022-11-02 21:03:37,929 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5554860241969128 [2022-11-02 21:03:37,929 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2663 transitions. [2022-11-02 21:03:37,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2663 transitions. [2022-11-02 21:03:37,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:37,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2663 transitions. [2022-11-02 21:03:37,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 52.21568627450981) internal successors, (2663), 51 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:37,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:37,936 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 94.0) internal successors, (4888), 52 states have internal predecessors, (4888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:37,936 INFO L175 Difference]: Start difference. First operand has 591 places, 612 transitions, 9293 flow. Second operand 51 states and 2663 transitions. [2022-11-02 21:03:37,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 661 transitions, 11254 flow [2022-11-02 21:03:38,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 661 transitions, 10717 flow, removed 187 selfloop flow, removed 33 redundant places. [2022-11-02 21:03:38,262 INFO L231 Difference]: Finished difference. Result has 615 places, 616 transitions, 9236 flow [2022-11-02 21:03:38,262 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8784, PETRI_DIFFERENCE_MINUEND_PLACES=552, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=9236, PETRI_PLACES=615, PETRI_TRANSITIONS=616} [2022-11-02 21:03:38,263 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 527 predicate places. [2022-11-02 21:03:38,263 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 616 transitions, 9236 flow [2022-11-02 21:03:38,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.81818181818182) internal successors, (1118), 22 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:38,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:38,263 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] [2022-11-02 21:03:38,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-02 21:03:38,263 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:38,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1408868122, now seen corresponding path program 81 times [2022-11-02 21:03:38,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:38,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600342025] [2022-11-02 21:03:38,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:38,759 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 21:03:38,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:38,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600342025] [2022-11-02 21:03:38,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600342025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:38,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:38,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-11-02 21:03:38,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696454507] [2022-11-02 21:03:38,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:38,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-02 21:03:38,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:38,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-02 21:03:38,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:03:38,762 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:38,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 616 transitions, 9236 flow. Second operand has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:38,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:38,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:38,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:03:41,318 INFO L130 PetriNetUnfolder]: 445/1410 cut-off events. [2022-11-02 21:03:41,318 INFO L131 PetriNetUnfolder]: For 31354/31354 co-relation queries the response was YES. [2022-11-02 21:03:41,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11663 conditions, 1410 events. 445/1410 cut-off events. For 31354/31354 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 9467 event pairs, 37 based on Foata normal form. 1/1409 useless extension candidates. Maximal degree in co-relation 11450. Up to 910 conditions per place. [2022-11-02 21:03:41,343 INFO L137 encePairwiseOnDemand]: 64/94 looper letters, 432 selfloop transitions, 176 changer transitions 25/672 dead transitions. [2022-11-02 21:03:41,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 672 transitions, 11420 flow [2022-11-02 21:03:41,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 21:03:41,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-02 21:03:41,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 2465 transitions. [2022-11-02 21:03:41,346 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5579447713897692 [2022-11-02 21:03:41,346 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 2465 transitions. [2022-11-02 21:03:41,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 2465 transitions. [2022-11-02 21:03:41,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:03:41,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 2465 transitions. [2022-11-02 21:03:41,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 52.4468085106383) internal successors, (2465), 47 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:41,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:41,350 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 94.0) internal successors, (4512), 48 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:41,351 INFO L175 Difference]: Start difference. First operand has 615 places, 616 transitions, 9236 flow. Second operand 47 states and 2465 transitions. [2022-11-02 21:03:41,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 672 transitions, 11420 flow [2022-11-02 21:03:41,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 606 places, 672 transitions, 10968 flow, removed 67 selfloop flow, removed 46 redundant places. [2022-11-02 21:03:41,711 INFO L231 Difference]: Finished difference. Result has 617 places, 632 transitions, 9619 flow [2022-11-02 21:03:41,712 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=8810, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=9619, PETRI_PLACES=617, PETRI_TRANSITIONS=632} [2022-11-02 21:03:41,712 INFO L287 CegarLoopForPetriNet]: 88 programPoint places, 529 predicate places. [2022-11-02 21:03:41,712 INFO L495 AbstractCegarLoop]: Abstraction has has 617 places, 632 transitions, 9619 flow [2022-11-02 21:03:41,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 50.904761904761905) internal successors, (1069), 21 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:41,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:03:41,712 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] [2022-11-02 21:03:41,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-02 21:03:41,713 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 21:03:41,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:41,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1816937280, now seen corresponding path program 82 times [2022-11-02 21:03:41,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:41,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097300662] [2022-11-02 21:03:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:42,218 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 21:03:42,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:42,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097300662] [2022-11-02 21:03:42,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097300662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:42,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:03:42,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-02 21:03:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940073532] [2022-11-02 21:03:42,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:42,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:03:42,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:42,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:03:42,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:03:42,221 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 94 [2022-11-02 21:03:42,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 617 places, 632 transitions, 9619 flow. Second operand has 20 states, 20 states have (on average 51.0) internal successors, (1020), 20 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:03:42,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:03:42,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 94 [2022-11-02 21:03:42,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand