./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.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_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/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_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/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_39f033d0-17ed-4cfb-b21c-ba560d9ba575/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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- 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 21:06:15,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:06:15,539 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:06:15,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:06:15,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:06:15,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:06:15,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:06:15,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:06:15,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:06:15,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:06:15,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:06:15,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:06:15,600 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:06:15,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:06:15,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:06:15,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:06:15,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:06:15,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:06:15,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:06:15,620 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:06:15,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:06:15,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:06:15,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:06:15,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:06:15,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:06:15,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:06:15,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:06:15,638 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:06:15,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:06:15,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:06:15,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:06:15,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:06:15,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:06:15,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:06:15,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:06:15,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:06:15,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:06:15,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:06:15,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:06:15,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:06:15,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:06:15,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:06:15,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:06:15,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:06:15,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:06:15,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:06:15,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:06:15,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:06:15,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:06:15,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:06:15,690 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:06:15,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:06:15,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:06:15,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:06:15,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:06:15,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:06:15,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:06:15,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:06:15,692 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:06:15,693 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:06:15,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:06:15,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:06:15,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:06:15,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:06:15,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:06:15,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:06:15,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:15,694 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:06:15,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:06:15,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:06:15,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:06:15,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:06:15,697 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:06:15,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:06:15,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:06:15,698 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_39f033d0-17ed-4cfb-b21c-ba560d9ba575/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-11-02 21:06:16,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:06:16,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:06:16,046 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:06:16,047 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:06:16,048 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:06:16,049 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-02 21:06:16,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/data/2dbdc2509/a605f6eb4a774ced970188e966416d1a/FLAGb9f38371e [2022-11-02 21:06:16,557 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:06:16,558 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-02 21:06:16,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/data/2dbdc2509/a605f6eb4a774ced970188e966416d1a/FLAGb9f38371e [2022-11-02 21:06:16,959 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/data/2dbdc2509/a605f6eb4a774ced970188e966416d1a [2022-11-02 21:06:16,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:06:16,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:06:16,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:16,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:06:16,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:06:16,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:16" (1/1) ... [2022-11-02 21:06:16,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ab6382 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:16, skipping insertion in model container [2022-11-02 21:06:16,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:06:16" (1/1) ... [2022-11-02 21:06:16,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:06:17,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:06:17,188 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_39f033d0-17ed-4cfb-b21c-ba560d9ba575/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-02 21:06:17,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:17,203 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:06:17,225 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_39f033d0-17ed-4cfb-b21c-ba560d9ba575/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-02 21:06:17,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:06:17,241 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:06:17,242 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17 WrapperNode [2022-11-02 21:06:17,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:06:17,243 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:17,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:06:17,244 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:06:17,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,259 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,284 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 179 [2022-11-02 21:06:17,284 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:06:17,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:06:17,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:06:17,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:06:17,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,307 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,309 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:06:17,312 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:06:17,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:06:17,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:06:17,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (1/1) ... [2022-11-02 21:06:17,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:06:17,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:06:17,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:06:17,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39f033d0-17ed-4cfb-b21c-ba560d9ba575/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:06:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:06:17,395 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:06:17,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:06:17,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:06:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:06:17,397 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:06:17,397 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:06:17,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:06:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:06:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:06:17,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:06:17,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:06:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:06:17,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:06:17,407 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 21:06:17,519 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:06:17,521 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:06:17,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:06:17,969 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:06:17,982 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:06:17,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:17 BoogieIcfgContainer [2022-11-02 21:06:17,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:06:17,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:06:17,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:06:18,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:06:18,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:06:16" (1/3) ... [2022-11-02 21:06:18,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7deb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:18, skipping insertion in model container [2022-11-02 21:06:18,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:06:17" (2/3) ... [2022-11-02 21:06:18,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7deb80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:06:18, skipping insertion in model container [2022-11-02 21:06:18,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:06:17" (3/3) ... [2022-11-02 21:06:18,005 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-11-02 21:06:18,015 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:06:18,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:06:18,028 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:06:18,028 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:06:18,182 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 21:06:18,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 494 flow [2022-11-02 21:06:18,343 INFO L130 PetriNetUnfolder]: 17/232 cut-off events. [2022-11-02 21:06:18,343 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:06:18,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 17/232 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 511 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-11-02 21:06:18,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 235 transitions, 494 flow [2022-11-02 21:06:18,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 460 flow [2022-11-02 21:06:18,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:06:18,385 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;@27b68e7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:06:18,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 21:06:18,448 INFO L130 PetriNetUnfolder]: 17/220 cut-off events. [2022-11-02 21:06:18,448 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 21:06:18,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:18,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:18,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:18,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:18,462 INFO L85 PathProgramCache]: Analyzing trace with hash -585607744, now seen corresponding path program 1 times [2022-11-02 21:06:18,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:18,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826515712] [2022-11-02 21:06:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:18,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:18,915 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 21:06:18,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:18,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826515712] [2022-11-02 21:06:18,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826515712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:18,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:18,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:18,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276032664] [2022-11-02 21:06:18,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:18,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:18,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:18,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:18,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:18,984 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-11-02 21:06:18,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:18,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:18,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-11-02 21:06:18,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:19,277 INFO L130 PetriNetUnfolder]: 84/814 cut-off events. [2022-11-02 21:06:19,277 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-02 21:06:19,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 992 conditions, 814 events. 84/814 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5275 event pairs, 20 based on Foata normal form. 61/801 useless extension candidates. Maximal degree in co-relation 807. Up to 74 conditions per place. [2022-11-02 21:06:19,292 INFO L137 encePairwiseOnDemand]: 217/235 looper letters, 18 selfloop transitions, 6 changer transitions 2/221 dead transitions. [2022-11-02 21:06:19,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 221 transitions, 520 flow [2022-11-02 21:06:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:06:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 674 transitions. [2022-11-02 21:06:19,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9560283687943263 [2022-11-02 21:06:19,317 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 674 transitions. [2022-11-02 21:06:19,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 674 transitions. [2022-11-02 21:06:19,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:19,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 674 transitions. [2022-11-02 21:06:19,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,347 INFO L175 Difference]: Start difference. First operand has 214 places, 221 transitions, 460 flow. Second operand 3 states and 674 transitions. [2022-11-02 21:06:19,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 221 transitions, 520 flow [2022-11-02 21:06:19,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 221 transitions, 500 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 21:06:19,366 INFO L231 Difference]: Finished difference. Result has 212 places, 215 transitions, 476 flow [2022-11-02 21:06:19,368 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2022-11-02 21:06:19,374 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-11-02 21:06:19,375 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 476 flow [2022-11-02 21:06:19,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:19,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:19,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:06:19,377 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:19,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:19,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1906432866, now seen corresponding path program 1 times [2022-11-02 21:06:19,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:19,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380651317] [2022-11-02 21:06:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:19,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:19,554 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 21:06:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:19,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380651317] [2022-11-02 21:06:19,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380651317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:19,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:19,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:19,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598092350] [2022-11-02 21:06:19,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:19,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:19,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:19,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:19,559 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-11-02 21:06:19,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 476 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:19,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-11-02 21:06:19,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:19,844 INFO L130 PetriNetUnfolder]: 94/1636 cut-off events. [2022-11-02 21:06:19,845 INFO L131 PetriNetUnfolder]: For 80/81 co-relation queries the response was YES. [2022-11-02 21:06:19,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1911 conditions, 1636 events. 94/1636 cut-off events. For 80/81 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14458 event pairs, 25 based on Foata normal form. 0/1533 useless extension candidates. Maximal degree in co-relation 1126. Up to 85 conditions per place. [2022-11-02 21:06:19,864 INFO L137 encePairwiseOnDemand]: 231/235 looper letters, 17 selfloop transitions, 2 changer transitions 0/222 dead transitions. [2022-11-02 21:06:19,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 222 transitions, 533 flow [2022-11-02 21:06:19,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:19,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:06:19,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-11-02 21:06:19,867 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-11-02 21:06:19,868 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-11-02 21:06:19,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-11-02 21:06:19,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:19,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-11-02 21:06:19,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,873 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,873 INFO L175 Difference]: Start difference. First operand has 212 places, 215 transitions, 476 flow. Second operand 3 states and 663 transitions. [2022-11-02 21:06:19,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 222 transitions, 533 flow [2022-11-02 21:06:19,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 222 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:19,888 INFO L231 Difference]: Finished difference. Result has 212 places, 217 transitions, 484 flow [2022-11-02 21:06:19,888 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=212, PETRI_TRANSITIONS=217} [2022-11-02 21:06:19,889 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-11-02 21:06:19,889 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 217 transitions, 484 flow [2022-11-02 21:06:19,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:19,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:19,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:19,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:06:19,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:19,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:19,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1490463806, now seen corresponding path program 1 times [2022-11-02 21:06:19,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:19,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769102390] [2022-11-02 21:06:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:19,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:19,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:20,033 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 21:06:20,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:20,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769102390] [2022-11-02 21:06:20,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769102390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:20,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:20,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:20,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103589946] [2022-11-02 21:06:20,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:20,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:20,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:20,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:20,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:20,037 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-11-02 21:06:20,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 217 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:20,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-11-02 21:06:20,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:20,313 INFO L130 PetriNetUnfolder]: 126/1417 cut-off events. [2022-11-02 21:06:20,313 INFO L131 PetriNetUnfolder]: For 96/114 co-relation queries the response was YES. [2022-11-02 21:06:20,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1746 conditions, 1417 events. 126/1417 cut-off events. For 96/114 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11289 event pairs, 30 based on Foata normal form. 0/1287 useless extension candidates. Maximal degree in co-relation 639. Up to 98 conditions per place. [2022-11-02 21:06:20,329 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 24 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2022-11-02 21:06:20,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 225 transitions, 568 flow [2022-11-02 21:06:20,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:20,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:06:20,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-11-02 21:06:20,333 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-02 21:06:20,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-11-02 21:06:20,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-11-02 21:06:20,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:20,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-11-02 21:06:20,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,340 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,340 INFO L175 Difference]: Start difference. First operand has 212 places, 217 transitions, 484 flow. Second operand 3 states and 658 transitions. [2022-11-02 21:06:20,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 225 transitions, 568 flow [2022-11-02 21:06:20,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 225 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 21:06:20,348 INFO L231 Difference]: Finished difference. Result has 215 places, 221 transitions, 530 flow [2022-11-02 21:06:20,348 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=215, PETRI_TRANSITIONS=221} [2022-11-02 21:06:20,351 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2022-11-02 21:06:20,351 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 221 transitions, 530 flow [2022-11-02 21:06:20,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:20,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:20,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:06:20,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:20,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:20,354 INFO L85 PathProgramCache]: Analyzing trace with hash 857315408, now seen corresponding path program 1 times [2022-11-02 21:06:20,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:20,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654604776] [2022-11-02 21:06:20,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:20,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:20,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:20,468 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 21:06:20,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:20,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654604776] [2022-11-02 21:06:20,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654604776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:20,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:20,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:20,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899585757] [2022-11-02 21:06:20,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:20,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:20,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:20,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:20,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:20,472 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-11-02 21:06:20,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 221 transitions, 530 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:20,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-11-02 21:06:20,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:20,921 INFO L130 PetriNetUnfolder]: 134/2500 cut-off events. [2022-11-02 21:06:20,921 INFO L131 PetriNetUnfolder]: For 216/545 co-relation queries the response was YES. [2022-11-02 21:06:20,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3009 conditions, 2500 events. 134/2500 cut-off events. For 216/545 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 23602 event pairs, 22 based on Foata normal form. 2/2338 useless extension candidates. Maximal degree in co-relation 1445. Up to 99 conditions per place. [2022-11-02 21:06:20,944 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 17 selfloop transitions, 5 changer transitions 0/229 dead transitions. [2022-11-02 21:06:20,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 229 transitions, 595 flow [2022-11-02 21:06:20,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:06:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-11-02 21:06:20,947 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-11-02 21:06:20,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-11-02 21:06:20,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-11-02 21:06:20,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:20,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-11-02 21:06:20,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,956 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,956 INFO L175 Difference]: Start difference. First operand has 215 places, 221 transitions, 530 flow. Second operand 3 states and 661 transitions. [2022-11-02 21:06:20,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 229 transitions, 595 flow [2022-11-02 21:06:20,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 229 transitions, 583 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-11-02 21:06:20,965 INFO L231 Difference]: Finished difference. Result has 218 places, 224 transitions, 556 flow [2022-11-02 21:06:20,965 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=556, PETRI_PLACES=218, PETRI_TRANSITIONS=224} [2022-11-02 21:06:20,967 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-11-02 21:06:20,967 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 224 transitions, 556 flow [2022-11-02 21:06:20,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:20,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:20,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:20,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:06:20,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:20,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash -196207802, now seen corresponding path program 1 times [2022-11-02 21:06:20,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:20,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759989578] [2022-11-02 21:06:20,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:20,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:21,076 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 21:06:21,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:21,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759989578] [2022-11-02 21:06:21,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759989578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:21,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:21,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:21,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992829453] [2022-11-02 21:06:21,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:21,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:21,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:21,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:21,080 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-11-02 21:06:21,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 224 transitions, 556 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:21,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-11-02 21:06:21,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:21,479 INFO L130 PetriNetUnfolder]: 106/2249 cut-off events. [2022-11-02 21:06:21,479 INFO L131 PetriNetUnfolder]: For 173/303 co-relation queries the response was YES. [2022-11-02 21:06:21,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2697 conditions, 2249 events. 106/2249 cut-off events. For 173/303 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 20081 event pairs, 23 based on Foata normal form. 15/2110 useless extension candidates. Maximal degree in co-relation 1760. Up to 88 conditions per place. [2022-11-02 21:06:21,498 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 22 selfloop transitions, 3 changer transitions 0/232 dead transitions. [2022-11-02 21:06:21,498 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 232 transitions, 633 flow [2022-11-02 21:06:21,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:06:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-11-02 21:06:21,500 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-11-02 21:06:21,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-11-02 21:06:21,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-11-02 21:06:21,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:21,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-11-02 21:06:21,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,506 INFO L175 Difference]: Start difference. First operand has 218 places, 224 transitions, 556 flow. Second operand 3 states and 661 transitions. [2022-11-02 21:06:21,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 232 transitions, 633 flow [2022-11-02 21:06:21,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 232 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:21,513 INFO L231 Difference]: Finished difference. Result has 220 places, 227 transitions, 582 flow [2022-11-02 21:06:21,513 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=582, PETRI_PLACES=220, PETRI_TRANSITIONS=227} [2022-11-02 21:06:21,514 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 6 predicate places. [2022-11-02 21:06:21,514 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 227 transitions, 582 flow [2022-11-02 21:06:21,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:21,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:21,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:06:21,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:21,517 INFO L85 PathProgramCache]: Analyzing trace with hash 760428144, now seen corresponding path program 1 times [2022-11-02 21:06:21,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:21,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390768841] [2022-11-02 21:06:21,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:21,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:21,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:21,795 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 21:06:21,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:21,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390768841] [2022-11-02 21:06:21,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390768841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:21,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:21,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:06:21,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259192953] [2022-11-02 21:06:21,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:21,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:06:21,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:06:21,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:06:21,800 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-11-02 21:06:21,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 227 transitions, 582 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:21,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:21,802 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-11-02 21:06:21,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:22,216 INFO L130 PetriNetUnfolder]: 116/2199 cut-off events. [2022-11-02 21:06:22,216 INFO L131 PetriNetUnfolder]: For 85/292 co-relation queries the response was YES. [2022-11-02 21:06:22,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2813 conditions, 2199 events. 116/2199 cut-off events. For 85/292 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21043 event pairs, 40 based on Foata normal form. 4/2064 useless extension candidates. Maximal degree in co-relation 1453. Up to 199 conditions per place. [2022-11-02 21:06:22,237 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 21 selfloop transitions, 0 changer transitions 22/247 dead transitions. [2022-11-02 21:06:22,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 247 transitions, 719 flow [2022-11-02 21:06:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:06:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:06:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-11-02 21:06:22,242 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-11-02 21:06:22,242 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-11-02 21:06:22,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-11-02 21:06:22,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:22,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-11-02 21:06:22,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 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 21:06:22,253 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:22,254 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:22,254 INFO L175 Difference]: Start difference. First operand has 220 places, 227 transitions, 582 flow. Second operand 9 states and 1861 transitions. [2022-11-02 21:06:22,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 247 transitions, 719 flow [2022-11-02 21:06:22,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 247 transitions, 710 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-02 21:06:22,260 INFO L231 Difference]: Finished difference. Result has 234 places, 225 transitions, 579 flow [2022-11-02 21:06:22,260 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=234, PETRI_TRANSITIONS=225} [2022-11-02 21:06:22,261 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-11-02 21:06:22,261 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 579 flow [2022-11-02 21:06:22,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:22,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:22,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:22,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:06:22,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:22,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash -685180668, now seen corresponding path program 1 times [2022-11-02 21:06:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:22,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308828898] [2022-11-02 21:06:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:22,452 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 21:06:22,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:22,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308828898] [2022-11-02 21:06:22,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308828898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:22,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:22,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:06:22,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197466360] [2022-11-02 21:06:22,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:22,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:06:22,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:06:22,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:06:22,457 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-11-02 21:06:22,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 225 transitions, 579 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:22,459 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:22,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-11-02 21:06:22,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:22,916 INFO L130 PetriNetUnfolder]: 94/2215 cut-off events. [2022-11-02 21:06:22,916 INFO L131 PetriNetUnfolder]: For 76/236 co-relation queries the response was YES. [2022-11-02 21:06:22,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 2215 events. 94/2215 cut-off events. For 76/236 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 19946 event pairs, 28 based on Foata normal form. 13/2081 useless extension candidates. Maximal degree in co-relation 2796. Up to 143 conditions per place. [2022-11-02 21:06:22,937 INFO L137 encePairwiseOnDemand]: 227/235 looper letters, 32 selfloop transitions, 5 changer transitions 5/245 dead transitions. [2022-11-02 21:06:22,937 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 245 transitions, 724 flow [2022-11-02 21:06:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:06:22,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:06:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-11-02 21:06:22,942 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-11-02 21:06:22,942 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-11-02 21:06:22,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-11-02 21:06:22,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:22,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-11-02 21:06:22,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 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 21:06:22,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:22,954 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:22,954 INFO L175 Difference]: Start difference. First operand has 234 places, 225 transitions, 579 flow. Second operand 9 states and 1861 transitions. [2022-11-02 21:06:22,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 245 transitions, 724 flow [2022-11-02 21:06:22,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 245 transitions, 702 flow, removed 11 selfloop flow, removed 7 redundant places. [2022-11-02 21:06:22,960 INFO L231 Difference]: Finished difference. Result has 235 places, 229 transitions, 606 flow [2022-11-02 21:06:22,961 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=606, PETRI_PLACES=235, PETRI_TRANSITIONS=229} [2022-11-02 21:06:22,963 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 21 predicate places. [2022-11-02 21:06:22,963 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 229 transitions, 606 flow [2022-11-02 21:06:22,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:22,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:22,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:22,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:06:22,965 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:22,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:22,965 INFO L85 PathProgramCache]: Analyzing trace with hash -71488064, now seen corresponding path program 1 times [2022-11-02 21:06:22,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:22,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818291839] [2022-11-02 21:06:22,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:22,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:22,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:23,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:23,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:23,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818291839] [2022-11-02 21:06:23,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818291839] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:23,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:23,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 21:06:23,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68925799] [2022-11-02 21:06:23,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:23,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 21:06:23,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:23,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 21:06:23,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 21:06:23,036 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-11-02 21:06:23,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 229 transitions, 606 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:23,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:23,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-11-02 21:06:23,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:23,263 INFO L130 PetriNetUnfolder]: 46/1452 cut-off events. [2022-11-02 21:06:23,263 INFO L131 PetriNetUnfolder]: For 53/72 co-relation queries the response was YES. [2022-11-02 21:06:23,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 1452 events. 46/1452 cut-off events. For 53/72 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 11622 event pairs, 8 based on Foata normal form. 0/1363 useless extension candidates. Maximal degree in co-relation 1766. Up to 48 conditions per place. [2022-11-02 21:06:23,279 INFO L137 encePairwiseOnDemand]: 229/235 looper letters, 17 selfloop transitions, 4 changer transitions 2/236 dead transitions. [2022-11-02 21:06:23,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 236 transitions, 671 flow [2022-11-02 21:06:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 21:06:23,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 21:06:23,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-11-02 21:06:23,281 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-11-02 21:06:23,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-11-02 21:06:23,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-11-02 21:06:23,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:23,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-11-02 21:06:23,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:23,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:23,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:23,286 INFO L175 Difference]: Start difference. First operand has 235 places, 229 transitions, 606 flow. Second operand 3 states and 663 transitions. [2022-11-02 21:06:23,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 236 transitions, 671 flow [2022-11-02 21:06:23,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 236 transitions, 666 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-02 21:06:23,292 INFO L231 Difference]: Finished difference. Result has 234 places, 229 transitions, 625 flow [2022-11-02 21:06:23,292 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=601, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=625, PETRI_PLACES=234, PETRI_TRANSITIONS=229} [2022-11-02 21:06:23,295 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-11-02 21:06:23,296 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 229 transitions, 625 flow [2022-11-02 21:06:23,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:23,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:23,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:23,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:06:23,297 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:23,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:23,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1724628274, now seen corresponding path program 1 times [2022-11-02 21:06:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:23,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262646057] [2022-11-02 21:06:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:23,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:23,830 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 21:06:23,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:23,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262646057] [2022-11-02 21:06:23,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262646057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:23,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:23,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:23,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971695985] [2022-11-02 21:06:23,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:23,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:23,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:23,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:23,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:23,837 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:23,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 229 transitions, 625 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:23,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:23,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:23,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:24,874 INFO L130 PetriNetUnfolder]: 909/3773 cut-off events. [2022-11-02 21:06:24,875 INFO L131 PetriNetUnfolder]: For 302/397 co-relation queries the response was YES. [2022-11-02 21:06:24,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5943 conditions, 3773 events. 909/3773 cut-off events. For 302/397 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 37312 event pairs, 583 based on Foata normal form. 3/3566 useless extension candidates. Maximal degree in co-relation 5928. Up to 1288 conditions per place. [2022-11-02 21:06:24,904 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 76 selfloop transitions, 30 changer transitions 28/333 dead transitions. [2022-11-02 21:06:24,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 333 transitions, 1138 flow [2022-11-02 21:06:24,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 21:06:24,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 21:06:24,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-11-02 21:06:24,914 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8494680851063829 [2022-11-02 21:06:24,914 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-11-02 21:06:24,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-11-02 21:06:24,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:24,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-11-02 21:06:24,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.625) internal successors, (4791), 24 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:24,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:24,941 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:24,941 INFO L175 Difference]: Start difference. First operand has 234 places, 229 transitions, 625 flow. Second operand 24 states and 4791 transitions. [2022-11-02 21:06:24,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 333 transitions, 1138 flow [2022-11-02 21:06:24,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 333 transitions, 1126 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:24,948 INFO L231 Difference]: Finished difference. Result has 274 places, 258 transitions, 829 flow [2022-11-02 21:06:24,949 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=829, PETRI_PLACES=274, PETRI_TRANSITIONS=258} [2022-11-02 21:06:24,950 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 60 predicate places. [2022-11-02 21:06:24,950 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 258 transitions, 829 flow [2022-11-02 21:06:24,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:24,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:24,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:24,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:06:24,952 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:24,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:24,952 INFO L85 PathProgramCache]: Analyzing trace with hash -443845408, now seen corresponding path program 2 times [2022-11-02 21:06:24,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:24,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981125198] [2022-11-02 21:06:24,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:24,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:25,391 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 21:06:25,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:25,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981125198] [2022-11-02 21:06:25,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981125198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:25,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:25,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821416972] [2022-11-02 21:06:25,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:25,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:25,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:25,396 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:25,399 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 258 transitions, 829 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:25,399 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:25,399 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:25,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:26,529 INFO L130 PetriNetUnfolder]: 953/3852 cut-off events. [2022-11-02 21:06:26,530 INFO L131 PetriNetUnfolder]: For 3669/3755 co-relation queries the response was YES. [2022-11-02 21:06:26,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9206 conditions, 3852 events. 953/3852 cut-off events. For 3669/3755 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 38229 event pairs, 652 based on Foata normal form. 5/3634 useless extension candidates. Maximal degree in co-relation 9171. Up to 1394 conditions per place. [2022-11-02 21:06:26,567 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 104 selfloop transitions, 45 changer transitions 26/374 dead transitions. [2022-11-02 21:06:26,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 374 transitions, 1712 flow [2022-11-02 21:06:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 21:06:26,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-02 21:06:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4788 transitions. [2022-11-02 21:06:26,578 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-11-02 21:06:26,578 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4788 transitions. [2022-11-02 21:06:26,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4788 transitions. [2022-11-02 21:06:26,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:26,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4788 transitions. [2022-11-02 21:06:26,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.5) internal successors, (4788), 24 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,610 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,610 INFO L175 Difference]: Start difference. First operand has 274 places, 258 transitions, 829 flow. Second operand 24 states and 4788 transitions. [2022-11-02 21:06:26,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 374 transitions, 1712 flow [2022-11-02 21:06:26,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 374 transitions, 1702 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:26,686 INFO L231 Difference]: Finished difference. Result has 313 places, 287 transitions, 1239 flow [2022-11-02 21:06:26,687 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1239, PETRI_PLACES=313, PETRI_TRANSITIONS=287} [2022-11-02 21:06:26,688 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 99 predicate places. [2022-11-02 21:06:26,688 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 287 transitions, 1239 flow [2022-11-02 21:06:26,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:26,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:26,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:26,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:06:26,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:26,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:26,691 INFO L85 PathProgramCache]: Analyzing trace with hash -988723314, now seen corresponding path program 1 times [2022-11-02 21:06:26,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:26,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426667283] [2022-11-02 21:06:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:26,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:27,203 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 21:06:27,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:27,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426667283] [2022-11-02 21:06:27,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426667283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:27,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:27,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:27,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52756477] [2022-11-02 21:06:27,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:27,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:27,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:27,210 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:27,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 287 transitions, 1239 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:27,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:27,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:27,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:28,549 INFO L130 PetriNetUnfolder]: 958/4050 cut-off events. [2022-11-02 21:06:28,552 INFO L131 PetriNetUnfolder]: For 8066/8251 co-relation queries the response was YES. [2022-11-02 21:06:28,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11203 conditions, 4050 events. 958/4050 cut-off events. For 8066/8251 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 40272 event pairs, 345 based on Foata normal form. 6/3820 useless extension candidates. Maximal degree in co-relation 11149. Up to 920 conditions per place. [2022-11-02 21:06:28,604 INFO L137 encePairwiseOnDemand]: 220/235 looper letters, 109 selfloop transitions, 43 changer transitions 23/374 dead transitions. [2022-11-02 21:06:28,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 374 transitions, 2074 flow [2022-11-02 21:06:28,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:06:28,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 21:06:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3219 transitions. [2022-11-02 21:06:28,612 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8561170212765957 [2022-11-02 21:06:28,612 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3219 transitions. [2022-11-02 21:06:28,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3219 transitions. [2022-11-02 21:06:28,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:28,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3219 transitions. [2022-11-02 21:06:28,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 201.1875) internal successors, (3219), 16 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:28,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:28,631 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:28,631 INFO L175 Difference]: Start difference. First operand has 313 places, 287 transitions, 1239 flow. Second operand 16 states and 3219 transitions. [2022-11-02 21:06:28,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 374 transitions, 2074 flow [2022-11-02 21:06:28,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 374 transitions, 1858 flow, removed 108 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:28,747 INFO L231 Difference]: Finished difference. Result has 336 places, 322 transitions, 1491 flow [2022-11-02 21:06:28,747 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1491, PETRI_PLACES=336, PETRI_TRANSITIONS=322} [2022-11-02 21:06:28,748 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 122 predicate places. [2022-11-02 21:06:28,748 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 322 transitions, 1491 flow [2022-11-02 21:06:28,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:28,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:28,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:28,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:06:28,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:28,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:28,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1596079044, now seen corresponding path program 3 times [2022-11-02 21:06:28,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:28,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201514794] [2022-11-02 21:06:28,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:28,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:29,115 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 21:06:29,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:29,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201514794] [2022-11-02 21:06:29,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201514794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:29,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:29,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:29,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415779897] [2022-11-02 21:06:29,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:29,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:29,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:29,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:29,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:29,120 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:29,122 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 322 transitions, 1491 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:29,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:29,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:29,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:30,485 INFO L130 PetriNetUnfolder]: 1040/4017 cut-off events. [2022-11-02 21:06:30,485 INFO L131 PetriNetUnfolder]: For 10136/10240 co-relation queries the response was YES. [2022-11-02 21:06:30,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12778 conditions, 4017 events. 1040/4017 cut-off events. For 10136/10240 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 40010 event pairs, 448 based on Foata normal form. 2/3800 useless extension candidates. Maximal degree in co-relation 12713. Up to 1498 conditions per place. [2022-11-02 21:06:30,579 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 55 changer transitions 17/401 dead transitions. [2022-11-02 21:06:30,579 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 401 transitions, 2597 flow [2022-11-02 21:06:30,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:06:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 21:06:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-11-02 21:06:30,585 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-11-02 21:06:30,586 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-11-02 21:06:30,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-11-02 21:06:30,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:30,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-11-02 21:06:30,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:30,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:30,601 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:30,601 INFO L175 Difference]: Start difference. First operand has 336 places, 322 transitions, 1491 flow. Second operand 18 states and 3593 transitions. [2022-11-02 21:06:30,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 401 transitions, 2597 flow [2022-11-02 21:06:30,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 401 transitions, 2491 flow, removed 49 selfloop flow, removed 3 redundant places. [2022-11-02 21:06:30,708 INFO L231 Difference]: Finished difference. Result has 358 places, 349 transitions, 1937 flow [2022-11-02 21:06:30,709 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1937, PETRI_PLACES=358, PETRI_TRANSITIONS=349} [2022-11-02 21:06:30,709 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 144 predicate places. [2022-11-02 21:06:30,710 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 349 transitions, 1937 flow [2022-11-02 21:06:30,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:30,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:30,711 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:30,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:06:30,711 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:30,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1289949996, now seen corresponding path program 4 times [2022-11-02 21:06:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:30,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099807722] [2022-11-02 21:06:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:30,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:31,171 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 21:06:31,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:31,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099807722] [2022-11-02 21:06:31,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099807722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:31,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:31,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:31,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015919673] [2022-11-02 21:06:31,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:31,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:31,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:31,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:31,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:31,174 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:31,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 349 transitions, 1937 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:31,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:31,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:31,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:32,648 INFO L130 PetriNetUnfolder]: 1107/4258 cut-off events. [2022-11-02 21:06:32,649 INFO L131 PetriNetUnfolder]: For 14363/14476 co-relation queries the response was YES. [2022-11-02 21:06:32,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14431 conditions, 4258 events. 1107/4258 cut-off events. For 14363/14476 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 42829 event pairs, 501 based on Foata normal form. 5/4040 useless extension candidates. Maximal degree in co-relation 14358. Up to 1589 conditions per place. [2022-11-02 21:06:32,729 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 144 selfloop transitions, 64 changer transitions 16/423 dead transitions. [2022-11-02 21:06:32,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 423 transitions, 3071 flow [2022-11-02 21:06:32,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:06:32,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 21:06:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3201 transitions. [2022-11-02 21:06:32,737 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8513297872340425 [2022-11-02 21:06:32,737 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3201 transitions. [2022-11-02 21:06:32,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3201 transitions. [2022-11-02 21:06:32,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:32,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3201 transitions. [2022-11-02 21:06:32,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.0625) internal successors, (3201), 16 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:32,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:32,773 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:32,773 INFO L175 Difference]: Start difference. First operand has 358 places, 349 transitions, 1937 flow. Second operand 16 states and 3201 transitions. [2022-11-02 21:06:32,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 423 transitions, 3071 flow [2022-11-02 21:06:32,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 423 transitions, 2863 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:32,954 INFO L231 Difference]: Finished difference. Result has 379 places, 369 transitions, 2245 flow [2022-11-02 21:06:33,027 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2245, PETRI_PLACES=379, PETRI_TRANSITIONS=369} [2022-11-02 21:06:33,028 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 165 predicate places. [2022-11-02 21:06:33,028 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 369 transitions, 2245 flow [2022-11-02 21:06:33,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:33,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:33,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:33,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:06:33,029 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:33,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:33,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1028070894, now seen corresponding path program 5 times [2022-11-02 21:06:33,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:33,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037123067] [2022-11-02 21:06:33,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:33,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:33,429 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 21:06:33,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:33,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037123067] [2022-11-02 21:06:33,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037123067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:33,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:33,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:33,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403271554] [2022-11-02 21:06:33,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:33,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:33,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:33,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:33,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:33,433 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:33,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 369 transitions, 2245 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:33,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:33,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:33,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:35,240 INFO L130 PetriNetUnfolder]: 1225/4736 cut-off events. [2022-11-02 21:06:35,241 INFO L131 PetriNetUnfolder]: For 20367/20480 co-relation queries the response was YES. [2022-11-02 21:06:35,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17137 conditions, 4736 events. 1225/4736 cut-off events. For 20367/20480 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 49456 event pairs, 500 based on Foata normal form. 5/4517 useless extension candidates. Maximal degree in co-relation 17055. Up to 1623 conditions per place. [2022-11-02 21:06:35,323 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 164 selfloop transitions, 72 changer transitions 19/454 dead transitions. [2022-11-02 21:06:35,323 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 454 transitions, 3751 flow [2022-11-02 21:06:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:06:35,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 21:06:35,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3988 transitions. [2022-11-02 21:06:35,330 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8485106382978723 [2022-11-02 21:06:35,330 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3988 transitions. [2022-11-02 21:06:35,330 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3988 transitions. [2022-11-02 21:06:35,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:35,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3988 transitions. [2022-11-02 21:06:35,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.4) internal successors, (3988), 20 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:35,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:35,350 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:35,350 INFO L175 Difference]: Start difference. First operand has 379 places, 369 transitions, 2245 flow. Second operand 20 states and 3988 transitions. [2022-11-02 21:06:35,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 454 transitions, 3751 flow [2022-11-02 21:06:35,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 454 transitions, 3558 flow, removed 85 selfloop flow, removed 3 redundant places. [2022-11-02 21:06:35,574 INFO L231 Difference]: Finished difference. Result has 408 places, 403 transitions, 2922 flow [2022-11-02 21:06:35,575 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2105, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2922, PETRI_PLACES=408, PETRI_TRANSITIONS=403} [2022-11-02 21:06:35,576 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 194 predicate places. [2022-11-02 21:06:35,576 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 403 transitions, 2922 flow [2022-11-02 21:06:35,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:35,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:35,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:35,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:06:35,578 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:35,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:35,578 INFO L85 PathProgramCache]: Analyzing trace with hash -54569848, now seen corresponding path program 6 times [2022-11-02 21:06:35,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:35,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281459836] [2022-11-02 21:06:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:35,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:36,029 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 21:06:36,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:36,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281459836] [2022-11-02 21:06:36,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281459836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:36,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:36,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:36,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702297552] [2022-11-02 21:06:36,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:36,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:36,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:36,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:36,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:36,033 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:36,035 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 403 transitions, 2922 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:36,035 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:36,035 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:36,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:37,825 INFO L130 PetriNetUnfolder]: 1268/4896 cut-off events. [2022-11-02 21:06:37,825 INFO L131 PetriNetUnfolder]: For 27655/27777 co-relation queries the response was YES. [2022-11-02 21:06:37,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19061 conditions, 4896 events. 1268/4896 cut-off events. For 27655/27777 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 51534 event pairs, 524 based on Foata normal form. 5/4675 useless extension candidates. Maximal degree in co-relation 18966. Up to 1699 conditions per place. [2022-11-02 21:06:37,942 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 191 selfloop transitions, 72 changer transitions 22/484 dead transitions. [2022-11-02 21:06:37,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 484 transitions, 4475 flow [2022-11-02 21:06:37,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-02 21:06:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-02 21:06:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3992 transitions. [2022-11-02 21:06:37,950 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8493617021276596 [2022-11-02 21:06:37,950 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3992 transitions. [2022-11-02 21:06:37,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3992 transitions. [2022-11-02 21:06:37,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:37,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3992 transitions. [2022-11-02 21:06:37,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.6) internal successors, (3992), 20 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:37,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:37,973 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:37,973 INFO L175 Difference]: Start difference. First operand has 408 places, 403 transitions, 2922 flow. Second operand 20 states and 3992 transitions. [2022-11-02 21:06:37,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 484 transitions, 4475 flow [2022-11-02 21:06:38,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 484 transitions, 4145 flow, removed 165 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:38,323 INFO L231 Difference]: Finished difference. Result has 438 places, 436 transitions, 3531 flow [2022-11-02 21:06:38,325 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2692, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3531, PETRI_PLACES=438, PETRI_TRANSITIONS=436} [2022-11-02 21:06:38,325 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 224 predicate places. [2022-11-02 21:06:38,325 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 436 transitions, 3531 flow [2022-11-02 21:06:38,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:38,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:38,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:38,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:06:38,327 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:38,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:38,328 INFO L85 PathProgramCache]: Analyzing trace with hash 324724986, now seen corresponding path program 7 times [2022-11-02 21:06:38,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:38,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905449878] [2022-11-02 21:06:38,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:38,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:38,742 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 21:06:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:38,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905449878] [2022-11-02 21:06:38,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905449878] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:38,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:38,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:38,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673782106] [2022-11-02 21:06:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:38,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:38,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:38,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:38,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:38,750 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:38,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 436 transitions, 3531 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:38,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:38,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:38,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:40,446 INFO L130 PetriNetUnfolder]: 1307/5068 cut-off events. [2022-11-02 21:06:40,447 INFO L131 PetriNetUnfolder]: For 29000/29134 co-relation queries the response was YES. [2022-11-02 21:06:40,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20250 conditions, 5068 events. 1307/5068 cut-off events. For 29000/29134 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 54185 event pairs, 470 based on Foata normal form. 20/4864 useless extension candidates. Maximal degree in co-relation 20141. Up to 1694 conditions per place. [2022-11-02 21:06:40,560 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 190 selfloop transitions, 103 changer transitions 24/516 dead transitions. [2022-11-02 21:06:40,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 516 transitions, 4993 flow [2022-11-02 21:06:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:06:40,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 21:06:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4385 transitions. [2022-11-02 21:06:40,731 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8481624758220503 [2022-11-02 21:06:40,732 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4385 transitions. [2022-11-02 21:06:40,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4385 transitions. [2022-11-02 21:06:40,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:40,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4385 transitions. [2022-11-02 21:06:40,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.3181818181818) internal successors, (4385), 22 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:40,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:40,777 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:40,778 INFO L175 Difference]: Start difference. First operand has 438 places, 436 transitions, 3531 flow. Second operand 22 states and 4385 transitions. [2022-11-02 21:06:40,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 516 transitions, 4993 flow [2022-11-02 21:06:41,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 516 transitions, 4719 flow, removed 137 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:41,148 INFO L231 Difference]: Finished difference. Result has 469 places, 462 transitions, 4003 flow [2022-11-02 21:06:41,148 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3275, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4003, PETRI_PLACES=469, PETRI_TRANSITIONS=462} [2022-11-02 21:06:41,149 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 255 predicate places. [2022-11-02 21:06:41,149 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 462 transitions, 4003 flow [2022-11-02 21:06:41,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:41,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:41,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:41,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:06:41,153 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:41,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1531745564, now seen corresponding path program 8 times [2022-11-02 21:06:41,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986826415] [2022-11-02 21:06:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:41,577 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 21:06:41,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:41,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986826415] [2022-11-02 21:06:41,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986826415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:41,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:41,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:41,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180411884] [2022-11-02 21:06:41,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:41,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:41,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:41,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:41,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:41,581 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:41,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 462 transitions, 4003 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:41,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:41,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:41,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:43,823 INFO L130 PetriNetUnfolder]: 1364/5331 cut-off events. [2022-11-02 21:06:43,823 INFO L131 PetriNetUnfolder]: For 28350/28484 co-relation queries the response was YES. [2022-11-02 21:06:43,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21460 conditions, 5331 events. 1364/5331 cut-off events. For 28350/28484 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 57973 event pairs, 501 based on Foata normal form. 11/5112 useless extension candidates. Maximal degree in co-relation 21338. Up to 1793 conditions per place. [2022-11-02 21:06:43,890 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 210 selfloop transitions, 101 changer transitions 16/526 dead transitions. [2022-11-02 21:06:43,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 483 places, 526 transitions, 5401 flow [2022-11-02 21:06:43,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:06:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 21:06:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-11-02 21:06:43,895 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-11-02 21:06:43,895 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-11-02 21:06:43,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-11-02 21:06:43,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:43,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-11-02 21:06:43,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:43,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 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 21:06:43,909 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 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 21:06:43,909 INFO L175 Difference]: Start difference. First operand has 469 places, 462 transitions, 4003 flow. Second operand 17 states and 3398 transitions. [2022-11-02 21:06:43,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 483 places, 526 transitions, 5401 flow [2022-11-02 21:06:44,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 526 transitions, 5279 flow, removed 61 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:44,272 INFO L231 Difference]: Finished difference. Result has 489 places, 483 transitions, 4535 flow [2022-11-02 21:06:44,273 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3883, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=4535, PETRI_PLACES=489, PETRI_TRANSITIONS=483} [2022-11-02 21:06:44,274 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 275 predicate places. [2022-11-02 21:06:44,274 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 483 transitions, 4535 flow [2022-11-02 21:06:44,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:44,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:44,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:44,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:06:44,275 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:44,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1731561870, now seen corresponding path program 9 times [2022-11-02 21:06:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:44,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12560121] [2022-11-02 21:06:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:44,631 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 21:06:44,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:44,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12560121] [2022-11-02 21:06:44,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12560121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:44,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:44,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:44,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735023082] [2022-11-02 21:06:44,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:44,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:44,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:44,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:44,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:44,635 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:44,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 483 transitions, 4535 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:44,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:44,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:44,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:46,558 INFO L130 PetriNetUnfolder]: 1365/5551 cut-off events. [2022-11-02 21:06:46,558 INFO L131 PetriNetUnfolder]: For 32461/32598 co-relation queries the response was YES. [2022-11-02 21:06:46,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22415 conditions, 5551 events. 1365/5551 cut-off events. For 32461/32598 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 61132 event pairs, 506 based on Foata normal form. 10/5335 useless extension candidates. Maximal degree in co-relation 22286. Up to 1827 conditions per place. [2022-11-02 21:06:46,629 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 204 selfloop transitions, 113 changer transitions 19/535 dead transitions. [2022-11-02 21:06:46,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 535 transitions, 5745 flow [2022-11-02 21:06:46,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:06:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-02 21:06:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-11-02 21:06:46,634 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-11-02 21:06:46,634 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-11-02 21:06:46,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-11-02 21:06:46,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:46,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-11-02 21:06:46,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:46,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:46,646 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:46,646 INFO L175 Difference]: Start difference. First operand has 489 places, 483 transitions, 4535 flow. Second operand 16 states and 3198 transitions. [2022-11-02 21:06:46,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 535 transitions, 5745 flow [2022-11-02 21:06:46,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 535 transitions, 5595 flow, removed 75 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:46,922 INFO L231 Difference]: Finished difference. Result has 505 places, 489 transitions, 4752 flow [2022-11-02 21:06:46,923 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4752, PETRI_PLACES=505, PETRI_TRANSITIONS=489} [2022-11-02 21:06:46,923 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 291 predicate places. [2022-11-02 21:06:46,923 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 489 transitions, 4752 flow [2022-11-02 21:06:46,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:46,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:46,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:46,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:06:46,924 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:46,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:46,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1612821532, now seen corresponding path program 10 times [2022-11-02 21:06:46,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:46,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735735085] [2022-11-02 21:06:46,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:46,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:47,440 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 21:06:47,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:47,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735735085] [2022-11-02 21:06:47,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735735085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:47,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:47,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:47,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902370587] [2022-11-02 21:06:47,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:47,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:47,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:47,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:47,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:47,446 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:47,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 505 places, 489 transitions, 4752 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:47,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:47,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:47,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:49,602 INFO L130 PetriNetUnfolder]: 1400/5733 cut-off events. [2022-11-02 21:06:49,602 INFO L131 PetriNetUnfolder]: For 36552/36689 co-relation queries the response was YES. [2022-11-02 21:06:49,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23786 conditions, 5733 events. 1400/5733 cut-off events. For 36552/36689 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 63781 event pairs, 546 based on Foata normal form. 2/5504 useless extension candidates. Maximal degree in co-relation 23653. Up to 1765 conditions per place. [2022-11-02 21:06:49,684 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 237 selfloop transitions, 104 changer transitions 23/563 dead transitions. [2022-11-02 21:06:49,684 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 563 transitions, 6462 flow [2022-11-02 21:06:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:06:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 21:06:49,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4190 transitions. [2022-11-02 21:06:49,689 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8490374873353597 [2022-11-02 21:06:49,689 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4190 transitions. [2022-11-02 21:06:49,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4190 transitions. [2022-11-02 21:06:49,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:49,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4190 transitions. [2022-11-02 21:06:49,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.52380952380952) internal successors, (4190), 21 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:49,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:49,705 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:49,705 INFO L175 Difference]: Start difference. First operand has 505 places, 489 transitions, 4752 flow. Second operand 21 states and 4190 transitions. [2022-11-02 21:06:49,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 563 transitions, 6462 flow [2022-11-02 21:06:50,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 563 transitions, 6337 flow, removed 18 selfloop flow, removed 4 redundant places. [2022-11-02 21:06:50,033 INFO L231 Difference]: Finished difference. Result has 533 places, 516 transitions, 5576 flow [2022-11-02 21:06:50,034 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5576, PETRI_PLACES=533, PETRI_TRANSITIONS=516} [2022-11-02 21:06:50,034 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 319 predicate places. [2022-11-02 21:06:50,035 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 516 transitions, 5576 flow [2022-11-02 21:06:50,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:50,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:50,035 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:50,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-02 21:06:50,035 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:50,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:50,036 INFO L85 PathProgramCache]: Analyzing trace with hash -122448154, now seen corresponding path program 11 times [2022-11-02 21:06:50,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:50,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322715907] [2022-11-02 21:06:50,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:50,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:50,508 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 21:06:50,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:50,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322715907] [2022-11-02 21:06:50,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322715907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:50,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:50,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:50,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076585005] [2022-11-02 21:06:50,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:50,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:50,512 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:50,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 516 transitions, 5576 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:50,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:50,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:50,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:52,369 INFO L130 PetriNetUnfolder]: 1417/5803 cut-off events. [2022-11-02 21:06:52,369 INFO L131 PetriNetUnfolder]: For 41523/41687 co-relation queries the response was YES. [2022-11-02 21:06:52,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25061 conditions, 5803 events. 1417/5803 cut-off events. For 41523/41687 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 64805 event pairs, 564 based on Foata normal form. 2/5567 useless extension candidates. Maximal degree in co-relation 24916. Up to 1893 conditions per place. [2022-11-02 21:06:52,457 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 224 selfloop transitions, 123 changer transitions 20/566 dead transitions. [2022-11-02 21:06:52,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 548 places, 566 transitions, 6919 flow [2022-11-02 21:06:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:06:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 21:06:52,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-11-02 21:06:52,462 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-11-02 21:06:52,462 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-11-02 21:06:52,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-11-02 21:06:52,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:52,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-11-02 21:06:52,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:52,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:52,474 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:52,474 INFO L175 Difference]: Start difference. First operand has 533 places, 516 transitions, 5576 flow. Second operand 18 states and 3593 transitions. [2022-11-02 21:06:52,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 548 places, 566 transitions, 6919 flow [2022-11-02 21:06:52,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 546 places, 566 transitions, 6625 flow, removed 147 selfloop flow, removed 2 redundant places. [2022-11-02 21:06:52,880 INFO L231 Difference]: Finished difference. Result has 553 places, 529 transitions, 5901 flow [2022-11-02 21:06:52,880 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5356, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5901, PETRI_PLACES=553, PETRI_TRANSITIONS=529} [2022-11-02 21:06:52,881 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 339 predicate places. [2022-11-02 21:06:52,881 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 529 transitions, 5901 flow [2022-11-02 21:06:52,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:52,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:52,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:52,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:06:52,881 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:52,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:52,882 INFO L85 PathProgramCache]: Analyzing trace with hash -680636600, now seen corresponding path program 12 times [2022-11-02 21:06:52,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:52,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745576609] [2022-11-02 21:06:52,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:52,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:52,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:53,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:06:53,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:53,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745576609] [2022-11-02 21:06:53,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745576609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:53,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:53,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:53,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626890430] [2022-11-02 21:06:53,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:53,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:53,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:53,548 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:53,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 529 transitions, 5901 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:53,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:53,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:53,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:55,872 INFO L130 PetriNetUnfolder]: 1439/5928 cut-off events. [2022-11-02 21:06:55,872 INFO L131 PetriNetUnfolder]: For 40056/40196 co-relation queries the response was YES. [2022-11-02 21:06:55,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25833 conditions, 5928 events. 1439/5928 cut-off events. For 40056/40196 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 67133 event pairs, 513 based on Foata normal form. 11/5710 useless extension candidates. Maximal degree in co-relation 25682. Up to 1926 conditions per place. [2022-11-02 21:06:55,991 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 251 selfloop transitions, 117 changer transitions 15/582 dead transitions. [2022-11-02 21:06:55,991 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 582 transitions, 7362 flow [2022-11-02 21:06:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:06:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 21:06:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-11-02 21:06:55,996 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-11-02 21:06:55,996 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-11-02 21:06:55,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-11-02 21:06:55,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:55,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-11-02 21:06:56,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:56,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 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 21:06:56,012 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 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 21:06:56,012 INFO L175 Difference]: Start difference. First operand has 553 places, 529 transitions, 5901 flow. Second operand 17 states and 3398 transitions. [2022-11-02 21:06:56,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 582 transitions, 7362 flow [2022-11-02 21:06:56,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 582 transitions, 7248 flow, removed 29 selfloop flow, removed 4 redundant places. [2022-11-02 21:06:56,410 INFO L231 Difference]: Finished difference. Result has 569 places, 547 transitions, 6492 flow [2022-11-02 21:06:56,411 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5792, PETRI_DIFFERENCE_MINUEND_PLACES=547, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6492, PETRI_PLACES=569, PETRI_TRANSITIONS=547} [2022-11-02 21:06:56,411 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 355 predicate places. [2022-11-02 21:06:56,411 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 547 transitions, 6492 flow [2022-11-02 21:06:56,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:56,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:56,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:56,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-02 21:06:56,412 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:56,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1337717372, now seen corresponding path program 13 times [2022-11-02 21:06:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:56,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408994306] [2022-11-02 21:06:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:06:56,941 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 21:06:56,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:06:56,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408994306] [2022-11-02 21:06:56,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408994306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:06:56,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:06:56,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:06:56,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977825323] [2022-11-02 21:06:56,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:06:56,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:06:56,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:06:56,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:06:56,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:06:56,945 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:06:56,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 547 transitions, 6492 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:56,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:06:56,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:06:56,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:06:59,038 INFO L130 PetriNetUnfolder]: 1436/5991 cut-off events. [2022-11-02 21:06:59,038 INFO L131 PetriNetUnfolder]: For 42579/42719 co-relation queries the response was YES. [2022-11-02 21:06:59,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26259 conditions, 5991 events. 1436/5991 cut-off events. For 42579/42719 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 68340 event pairs, 515 based on Foata normal form. 11/5771 useless extension candidates. Maximal degree in co-relation 26105. Up to 1916 conditions per place. [2022-11-02 21:06:59,203 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 248 selfloop transitions, 119 changer transitions 24/590 dead transitions. [2022-11-02 21:06:59,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 590 transitions, 7687 flow [2022-11-02 21:06:59,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:06:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 21:06:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3597 transitions. [2022-11-02 21:06:59,209 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.850354609929078 [2022-11-02 21:06:59,209 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3597 transitions. [2022-11-02 21:06:59,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3597 transitions. [2022-11-02 21:06:59,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:06:59,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3597 transitions. [2022-11-02 21:06:59,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.83333333333334) internal successors, (3597), 18 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:59,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:59,222 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:59,222 INFO L175 Difference]: Start difference. First operand has 569 places, 547 transitions, 6492 flow. Second operand 18 states and 3597 transitions. [2022-11-02 21:06:59,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 590 transitions, 7687 flow [2022-11-02 21:06:59,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 590 transitions, 7480 flow, removed 75 selfloop flow, removed 4 redundant places. [2022-11-02 21:06:59,763 INFO L231 Difference]: Finished difference. Result has 585 places, 554 transitions, 6727 flow [2022-11-02 21:06:59,763 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6297, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6727, PETRI_PLACES=585, PETRI_TRANSITIONS=554} [2022-11-02 21:06:59,764 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 371 predicate places. [2022-11-02 21:06:59,764 INFO L495 AbstractCegarLoop]: Abstraction has has 585 places, 554 transitions, 6727 flow [2022-11-02 21:06:59,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:06:59,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:06:59,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:06:59,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-02 21:06:59,766 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:06:59,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:06:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash -69035542, now seen corresponding path program 14 times [2022-11-02 21:06:59,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:06:59,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094662199] [2022-11-02 21:06:59,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:06:59,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:06:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:00,551 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 21:07:00,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:00,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094662199] [2022-11-02 21:07:00,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094662199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:00,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:00,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:07:00,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618082689] [2022-11-02 21:07:00,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:00,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:00,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:00,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:00,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:00,560 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:07:00,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 585 places, 554 transitions, 6727 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:00,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:00,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:07:00,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:03,378 INFO L130 PetriNetUnfolder]: 1494/6275 cut-off events. [2022-11-02 21:07:03,378 INFO L131 PetriNetUnfolder]: For 48598/48738 co-relation queries the response was YES. [2022-11-02 21:07:03,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27779 conditions, 6275 events. 1494/6275 cut-off events. For 48598/48738 co-relation queries the response was YES. Maximal size of possible extension queue 590. Compared 72415 event pairs, 536 based on Foata normal form. 5/6058 useless extension candidates. Maximal degree in co-relation 27623. Up to 1916 conditions per place. [2022-11-02 21:07:03,597 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 254 selfloop transitions, 157 changer transitions 23/633 dead transitions. [2022-11-02 21:07:03,597 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 633 transitions, 8503 flow [2022-11-02 21:07:03,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-02 21:07:03,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-02 21:07:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4383 transitions. [2022-11-02 21:07:03,605 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8477756286266924 [2022-11-02 21:07:03,606 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4383 transitions. [2022-11-02 21:07:03,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4383 transitions. [2022-11-02 21:07:03,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:03,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4383 transitions. [2022-11-02 21:07:03,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.22727272727272) internal successors, (4383), 22 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:03,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:03,622 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:03,622 INFO L175 Difference]: Start difference. First operand has 585 places, 554 transitions, 6727 flow. Second operand 22 states and 4383 transitions. [2022-11-02 21:07:03,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 633 transitions, 8503 flow [2022-11-02 21:07:04,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 633 transitions, 8382 flow, removed 50 selfloop flow, removed 8 redundant places. [2022-11-02 21:07:04,157 INFO L231 Difference]: Finished difference. Result has 610 places, 582 transitions, 7544 flow [2022-11-02 21:07:04,158 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6608, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7544, PETRI_PLACES=610, PETRI_TRANSITIONS=582} [2022-11-02 21:07:04,159 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 396 predicate places. [2022-11-02 21:07:04,159 INFO L495 AbstractCegarLoop]: Abstraction has has 610 places, 582 transitions, 7544 flow [2022-11-02 21:07:04,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:04,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:04,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:04,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-02 21:07:04,161 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:04,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1219050800, now seen corresponding path program 15 times [2022-11-02 21:07:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:04,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839152827] [2022-11-02 21:07:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:04,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:04,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:04,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839152827] [2022-11-02 21:07:04,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839152827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:04,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:04,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:07:04,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158812466] [2022-11-02 21:07:04,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:04,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:04,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:04,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:04,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:04,704 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:07:04,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 582 transitions, 7544 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:04,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:04,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:07:04,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:07,269 INFO L130 PetriNetUnfolder]: 1528/6501 cut-off events. [2022-11-02 21:07:07,269 INFO L131 PetriNetUnfolder]: For 55035/55175 co-relation queries the response was YES. [2022-11-02 21:07:07,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29720 conditions, 6501 events. 1528/6501 cut-off events. For 55035/55175 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 76157 event pairs, 546 based on Foata normal form. 5/6276 useless extension candidates. Maximal degree in co-relation 29557. Up to 1955 conditions per place. [2022-11-02 21:07:07,542 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 319 selfloop transitions, 112 changer transitions 21/651 dead transitions. [2022-11-02 21:07:07,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 651 transitions, 9437 flow [2022-11-02 21:07:07,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:07:07,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 21:07:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4187 transitions. [2022-11-02 21:07:07,547 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8484295845997973 [2022-11-02 21:07:07,547 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4187 transitions. [2022-11-02 21:07:07,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4187 transitions. [2022-11-02 21:07:07,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:07,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4187 transitions. [2022-11-02 21:07:07,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.38095238095238) internal successors, (4187), 21 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:07,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:07,562 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:07,562 INFO L175 Difference]: Start difference. First operand has 610 places, 582 transitions, 7544 flow. Second operand 21 states and 4187 transitions. [2022-11-02 21:07:07,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 651 transitions, 9437 flow [2022-11-02 21:07:08,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 626 places, 651 transitions, 9325 flow, removed 56 selfloop flow, removed 2 redundant places. [2022-11-02 21:07:08,152 INFO L231 Difference]: Finished difference. Result has 640 places, 608 transitions, 8409 flow [2022-11-02 21:07:08,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7434, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8409, PETRI_PLACES=640, PETRI_TRANSITIONS=608} [2022-11-02 21:07:08,153 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 426 predicate places. [2022-11-02 21:07:08,153 INFO L495 AbstractCegarLoop]: Abstraction has has 640 places, 608 transitions, 8409 flow [2022-11-02 21:07:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:08,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:08,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-02 21:07:08,154 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:08,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:08,155 INFO L85 PathProgramCache]: Analyzing trace with hash -785039288, now seen corresponding path program 16 times [2022-11-02 21:07:08,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:08,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524773070] [2022-11-02 21:07:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:08,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:08,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:08,868 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 21:07:08,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:08,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524773070] [2022-11-02 21:07:08,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524773070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:08,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:08,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:07:08,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884686117] [2022-11-02 21:07:08,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:08,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:08,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:08,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:08,873 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:07:08,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 608 transitions, 8409 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:08,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:08,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:07:08,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:12,099 INFO L130 PetriNetUnfolder]: 1527/6507 cut-off events. [2022-11-02 21:07:12,099 INFO L131 PetriNetUnfolder]: For 59317/59457 co-relation queries the response was YES. [2022-11-02 21:07:12,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30580 conditions, 6507 events. 1527/6507 cut-off events. For 59317/59457 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 76076 event pairs, 546 based on Foata normal form. 5/6291 useless extension candidates. Maximal degree in co-relation 30404. Up to 2008 conditions per place. [2022-11-02 21:07:12,391 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 271 selfloop transitions, 167 changer transitions 23/660 dead transitions. [2022-11-02 21:07:12,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 660 transitions, 9861 flow [2022-11-02 21:07:12,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:07:12,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 21:07:12,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-11-02 21:07:12,396 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-11-02 21:07:12,396 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-11-02 21:07:12,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-11-02 21:07:12,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:12,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-11-02 21:07:12,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:12,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:12,410 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:12,411 INFO L175 Difference]: Start difference. First operand has 640 places, 608 transitions, 8409 flow. Second operand 18 states and 3593 transitions. [2022-11-02 21:07:12,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 660 transitions, 9861 flow [2022-11-02 21:07:13,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 660 transitions, 9625 flow, removed 118 selfloop flow, removed 2 redundant places. [2022-11-02 21:07:13,219 INFO L231 Difference]: Finished difference. Result has 660 places, 617 transitions, 8770 flow [2022-11-02 21:07:13,220 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8175, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8770, PETRI_PLACES=660, PETRI_TRANSITIONS=617} [2022-11-02 21:07:13,221 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 446 predicate places. [2022-11-02 21:07:13,221 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 617 transitions, 8770 flow [2022-11-02 21:07:13,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:13,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:13,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-02 21:07:13,222 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:13,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash 571364426, now seen corresponding path program 17 times [2022-11-02 21:07:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:13,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75906744] [2022-11-02 21:07:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:07:13,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:13,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75906744] [2022-11-02 21:07:13,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75906744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:13,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:13,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:07:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215709649] [2022-11-02 21:07:13,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:13,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:13,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:13,865 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:07:13,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 617 transitions, 8770 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:13,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:13,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:07:13,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:16,829 INFO L130 PetriNetUnfolder]: 1582/6776 cut-off events. [2022-11-02 21:07:16,829 INFO L131 PetriNetUnfolder]: For 64099/64239 co-relation queries the response was YES. [2022-11-02 21:07:17,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32602 conditions, 6776 events. 1582/6776 cut-off events. For 64099/64239 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 80172 event pairs, 556 based on Foata normal form. 5/6551 useless extension candidates. Maximal degree in co-relation 32420. Up to 2051 conditions per place. [2022-11-02 21:07:17,034 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 323 selfloop transitions, 136 changer transitions 16/674 dead transitions. [2022-11-02 21:07:17,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 674 transitions, 10509 flow [2022-11-02 21:07:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:07:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 21:07:17,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-11-02 21:07:17,038 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-11-02 21:07:17,039 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-11-02 21:07:17,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-11-02 21:07:17,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:17,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-11-02 21:07:17,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:17,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 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 21:07:17,050 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 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 21:07:17,050 INFO L175 Difference]: Start difference. First operand has 660 places, 617 transitions, 8770 flow. Second operand 17 states and 3397 transitions. [2022-11-02 21:07:17,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 674 transitions, 10509 flow [2022-11-02 21:07:18,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 674 transitions, 10257 flow, removed 49 selfloop flow, removed 6 redundant places. [2022-11-02 21:07:18,018 INFO L231 Difference]: Finished difference. Result has 674 places, 639 transitions, 9403 flow [2022-11-02 21:07:18,019 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8530, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9403, PETRI_PLACES=674, PETRI_TRANSITIONS=639} [2022-11-02 21:07:18,019 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 460 predicate places. [2022-11-02 21:07:18,019 INFO L495 AbstractCegarLoop]: Abstraction has has 674 places, 639 transitions, 9403 flow [2022-11-02 21:07:18,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:18,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:18,020 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:18,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-02 21:07:18,021 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:18,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:18,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1755708250, now seen corresponding path program 18 times [2022-11-02 21:07:18,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:18,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146856714] [2022-11-02 21:07:18,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:18,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:18,466 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 21:07:18,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:18,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146856714] [2022-11-02 21:07:18,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146856714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:18,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:18,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:07:18,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182436414] [2022-11-02 21:07:18,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:18,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:18,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:18,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:18,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:18,471 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:07:18,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 639 transitions, 9403 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:18,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:18,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:07:18,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:07:22,221 INFO L130 PetriNetUnfolder]: 1619/6951 cut-off events. [2022-11-02 21:07:22,222 INFO L131 PetriNetUnfolder]: For 68073/68213 co-relation queries the response was YES. [2022-11-02 21:07:22,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34286 conditions, 6951 events. 1619/6951 cut-off events. For 68073/68213 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 82736 event pairs, 563 based on Foata normal form. 5/6725 useless extension candidates. Maximal degree in co-relation 34101. Up to 2100 conditions per place. [2022-11-02 21:07:22,386 INFO L137 encePairwiseOnDemand]: 222/235 looper letters, 349 selfloop transitions, 131 changer transitions 17/696 dead transitions. [2022-11-02 21:07:22,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 696 transitions, 11182 flow [2022-11-02 21:07:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 21:07:22,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 21:07:22,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3401 transitions. [2022-11-02 21:07:22,390 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8513141426783479 [2022-11-02 21:07:22,390 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3401 transitions. [2022-11-02 21:07:22,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3401 transitions. [2022-11-02 21:07:22,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:07:22,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3401 transitions. [2022-11-02 21:07:22,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.05882352941177) internal successors, (3401), 17 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:22,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 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 21:07:22,399 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 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 21:07:22,400 INFO L175 Difference]: Start difference. First operand has 674 places, 639 transitions, 9403 flow. Second operand 17 states and 3401 transitions. [2022-11-02 21:07:22,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 696 transitions, 11182 flow [2022-11-02 21:07:23,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 686 places, 696 transitions, 10988 flow, removed 97 selfloop flow, removed 2 redundant places. [2022-11-02 21:07:23,069 INFO L231 Difference]: Finished difference. Result has 694 places, 660 transitions, 10060 flow [2022-11-02 21:07:23,069 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9223, PETRI_DIFFERENCE_MINUEND_PLACES=670, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10060, PETRI_PLACES=694, PETRI_TRANSITIONS=660} [2022-11-02 21:07:23,070 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 480 predicate places. [2022-11-02 21:07:23,070 INFO L495 AbstractCegarLoop]: Abstraction has has 694 places, 660 transitions, 10060 flow [2022-11-02 21:07:23,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:07:23,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:07:23,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-02 21:07:23,071 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 21:07:23,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:07:23,071 INFO L85 PathProgramCache]: Analyzing trace with hash 472041302, now seen corresponding path program 19 times [2022-11-02 21:07:23,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:07:23,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428437528] [2022-11-02 21:07:23,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:07:23,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:07:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:07:23,429 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 21:07:23,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:07:23,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428437528] [2022-11-02 21:07:23,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428437528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:07:23,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:07:23,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:07:23,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626388362] [2022-11-02 21:07:23,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:07:23,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:07:23,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:07:23,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:07:23,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:07:23,434 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-11-02 21:07:23,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 660 transitions, 10060 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:07:23,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:07:23,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-11-02 21:07:23,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand