./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN --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 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac --- 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-6b4ec56 [2022-11-20 11:42:00,640 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:42:00,643 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:42:00,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:42:00,677 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:42:00,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:42:00,686 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:42:00,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:42:00,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:42:00,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:42:00,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:42:00,696 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:42:00,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:42:00,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:42:00,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:42:00,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:42:00,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:42:00,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:42:00,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:42:00,709 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:42:00,710 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:42:00,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:42:00,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:42:00,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:42:00,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:42:00,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:42:00,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:42:00,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:42:00,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:42:00,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:42:00,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:42:00,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:42:00,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:42:00,728 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:42:00,729 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:42:00,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:42:00,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:42:00,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:42:00,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:42:00,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:42:00,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:42:00,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:42:00,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:42:00,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:42:00,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:42:00,766 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:42:00,767 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:42:00,767 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:42:00,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:42:00,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:42:00,769 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:42:00,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:42:00,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:42:00,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:42:00,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:42:00,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:42:00,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:42:00,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:42:00,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:42:00,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:42:00,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:42:00,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:42:00,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:42:00,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:42:00,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:42:00,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:42:00,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:42:00,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:42:00,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:42:00,775 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:42:00,775 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:42:00,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:42:00,775 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:42:00,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:42:00,776 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:42:00,776 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_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 016929a4a7ae1865ccc9d17762b9a3f4b350d2f1f075a0491feba933e4e45fac [2022-11-20 11:42:01,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:42:01,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:42:01,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:42:01,139 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:42:01,140 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:42:01,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-11-20 11:42:05,056 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:42:05,355 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:42:05,355 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/sv-benchmarks/c/weaver/chl-match-symm.wvr.c [2022-11-20 11:42:05,366 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/data/73a305e4e/a41da164f6b24553938a8a5ceeecc77b/FLAGdafecc02b [2022-11-20 11:42:05,390 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/data/73a305e4e/a41da164f6b24553938a8a5ceeecc77b [2022-11-20 11:42:05,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:42:05,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:42:05,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:42:05,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:42:05,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:42:05,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75db4d34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05, skipping insertion in model container [2022-11-20 11:42:05,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:42:05,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:42:05,726 WARN L237 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_2613a22d-2a98-4290-ae3d-0a32b3225cfb/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-11-20 11:42:05,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:42:05,758 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:42:05,788 WARN L237 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_2613a22d-2a98-4290-ae3d-0a32b3225cfb/sv-benchmarks/c/weaver/chl-match-symm.wvr.c[2584,2597] [2022-11-20 11:42:05,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:42:05,806 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:42:05,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05 WrapperNode [2022-11-20 11:42:05,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:42:05,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:42:05,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:42:05,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:42:05,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,855 INFO L138 Inliner]: procedures = 22, calls = 27, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 148 [2022-11-20 11:42:05,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:42:05,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:42:05,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:42:05,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:42:05,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,887 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:42:05,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:42:05,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:42:05,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:42:05,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (1/1) ... [2022-11-20 11:42:05,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:42:05,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:42:05,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:42:05,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2613a22d-2a98-4290-ae3d-0a32b3225cfb/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:42:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:42:06,002 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 11:42:06,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 11:42:06,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 11:42:06,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 11:42:06,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:42:06,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 11:42:06,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 11:42:06,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:42:06,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:42:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 11:42:06,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 11:42:06,011 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 11:42:06,158 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:42:06,163 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:42:06,643 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:42:06,655 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:42:06,656 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 11:42:06,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:06 BoogieIcfgContainer [2022-11-20 11:42:06,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:42:06,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:42:06,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:42:06,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:42:06,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:42:05" (1/3) ... [2022-11-20 11:42:06,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b427b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:06, skipping insertion in model container [2022-11-20 11:42:06,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:42:05" (2/3) ... [2022-11-20 11:42:06,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b427b4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:42:06, skipping insertion in model container [2022-11-20 11:42:06,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:42:06" (3/3) ... [2022-11-20 11:42:06,672 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-symm.wvr.c [2022-11-20 11:42:06,684 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 11:42:06,698 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:42:06,698 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:42:06,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 11:42:06,828 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 11:42:06,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 212 transitions, 440 flow [2022-11-20 11:42:07,005 INFO L130 PetriNetUnfolder]: 11/210 cut-off events. [2022-11-20 11:42:07,005 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:42:07,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 210 events. 11/210 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-11-20 11:42:07,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 208 places, 212 transitions, 440 flow [2022-11-20 11:42:07,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 201 transitions, 414 flow [2022-11-20 11:42:07,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:42:07,044 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;@7b54d1bd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:42:07,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 11:42:07,120 INFO L130 PetriNetUnfolder]: 11/200 cut-off events. [2022-11-20 11:42:07,120 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 11:42:07,121 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:42:07,122 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:07,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:42:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash -286532004, now seen corresponding path program 1 times [2022-11-20 11:42:07,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:07,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786394979] [2022-11-20 11:42:07,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:07,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:15,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:15,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786394979] [2022-11-20 11:42:15,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786394979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:15,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:15,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:42:15,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960423436] [2022-11-20 11:42:15,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:15,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:42:15,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:42:15,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:42:15,294 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:42:15,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 201 transitions, 414 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:15,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:42:15,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:42:15,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:42:41,219 INFO L130 PetriNetUnfolder]: 674/2400 cut-off events. [2022-11-20 11:42:41,222 INFO L131 PetriNetUnfolder]: For 114/114 co-relation queries the response was YES. [2022-11-20 11:42:41,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3960 conditions, 2400 events. 674/2400 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 15783 event pairs, 25 based on Foata normal form. 222/2485 useless extension candidates. Maximal degree in co-relation 3653. Up to 159 conditions per place. [2022-11-20 11:42:41,248 INFO L137 encePairwiseOnDemand]: 155/212 looper letters, 504 selfloop transitions, 17 changer transitions 44/672 dead transitions. [2022-11-20 11:42:41,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 672 transitions, 2543 flow [2022-11-20 11:42:41,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-20 11:42:41,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-20 11:42:41,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 6151 transitions. [2022-11-20 11:42:41,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6173223604977921 [2022-11-20 11:42:41,289 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 6151 transitions. [2022-11-20 11:42:41,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 6151 transitions. [2022-11-20 11:42:41,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:42:41,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 6151 transitions. [2022-11-20 11:42:41,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 130.87234042553192) internal successors, (6151), 47 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:41,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 212.0) internal successors, (10176), 48 states have internal predecessors, (10176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:41,359 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 212.0) internal successors, (10176), 48 states have internal predecessors, (10176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:41,362 INFO L175 Difference]: Start difference. First operand has 197 places, 201 transitions, 414 flow. Second operand 47 states and 6151 transitions. [2022-11-20 11:42:41,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 672 transitions, 2543 flow [2022-11-20 11:42:41,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 672 transitions, 2497 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 11:42:41,386 INFO L231 Difference]: Finished difference. Result has 265 places, 187 transitions, 465 flow [2022-11-20 11:42:41,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=465, PETRI_PLACES=265, PETRI_TRANSITIONS=187} [2022-11-20 11:42:41,396 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 68 predicate places. [2022-11-20 11:42:41,396 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 187 transitions, 465 flow [2022-11-20 11:42:41,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:41,400 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:42:41,401 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:41,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:42:41,402 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:42:41,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:41,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1620472852, now seen corresponding path program 2 times [2022-11-20 11:42:41,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:41,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993508690] [2022-11-20 11:42:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:46,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:42:46,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:46,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993508690] [2022-11-20 11:42:46,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993508690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:46,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:46,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:42:46,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100942903] [2022-11-20 11:42:46,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:46,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:42:46,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:46,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:42:46,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:42:46,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:42:46,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 187 transitions, 465 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:42:46,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:42:46,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:42:46,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:43:08,969 INFO L130 PetriNetUnfolder]: 697/2517 cut-off events. [2022-11-20 11:43:08,977 INFO L131 PetriNetUnfolder]: For 675/675 co-relation queries the response was YES. [2022-11-20 11:43:08,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5053 conditions, 2517 events. 697/2517 cut-off events. For 675/675 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 17054 event pairs, 2 based on Foata normal form. 1/2382 useless extension candidates. Maximal degree in co-relation 5019. Up to 159 conditions per place. [2022-11-20 11:43:09,006 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 502 selfloop transitions, 17 changer transitions 57/682 dead transitions. [2022-11-20 11:43:09,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 682 transitions, 3284 flow [2022-11-20 11:43:09,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-20 11:43:09,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-20 11:43:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 5724 transitions. [2022-11-20 11:43:09,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2022-11-20 11:43:09,030 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 5724 transitions. [2022-11-20 11:43:09,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 5724 transitions. [2022-11-20 11:43:09,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:43:09,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 5724 transitions. [2022-11-20 11:43:09,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 130.0909090909091) internal successors, (5724), 44 states have internal predecessors, (5724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:09,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 212.0) internal successors, (9540), 45 states have internal predecessors, (9540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:09,085 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 212.0) internal successors, (9540), 45 states have internal predecessors, (9540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:09,085 INFO L175 Difference]: Start difference. First operand has 265 places, 187 transitions, 465 flow. Second operand 44 states and 5724 transitions. [2022-11-20 11:43:09,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 682 transitions, 3284 flow [2022-11-20 11:43:09,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 682 transitions, 2593 flow, removed 33 selfloop flow, removed 42 redundant places. [2022-11-20 11:43:09,126 INFO L231 Difference]: Finished difference. Result has 261 places, 186 transitions, 467 flow [2022-11-20 11:43:09,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=467, PETRI_PLACES=261, PETRI_TRANSITIONS=186} [2022-11-20 11:43:09,127 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 64 predicate places. [2022-11-20 11:43:09,128 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 186 transitions, 467 flow [2022-11-20 11:43:09,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:09,130 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:43:09,131 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:09,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:43:09,132 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:43:09,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash 936517804, now seen corresponding path program 3 times [2022-11-20 11:43:09,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:09,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690935852] [2022-11-20 11:43:09,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:09,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:13,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690935852] [2022-11-20 11:43:13,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690935852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:13,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:13,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:43:13,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431029991] [2022-11-20 11:43:13,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:13,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:43:13,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:43:13,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=1174, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:43:13,816 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:43:13,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 186 transitions, 467 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:13,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:43:13,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:43:13,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:43:31,059 INFO L130 PetriNetUnfolder]: 1096/3748 cut-off events. [2022-11-20 11:43:31,060 INFO L131 PetriNetUnfolder]: For 1117/1117 co-relation queries the response was YES. [2022-11-20 11:43:31,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7851 conditions, 3748 events. 1096/3748 cut-off events. For 1117/1117 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 27801 event pairs, 312 based on Foata normal form. 1/3572 useless extension candidates. Maximal degree in co-relation 7806. Up to 702 conditions per place. [2022-11-20 11:43:31,096 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 395 selfloop transitions, 45 changer transitions 34/580 dead transitions. [2022-11-20 11:43:31,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 580 transitions, 2760 flow [2022-11-20 11:43:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 11:43:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-20 11:43:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 6325 transitions. [2022-11-20 11:43:31,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5966981132075472 [2022-11-20 11:43:31,116 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 6325 transitions. [2022-11-20 11:43:31,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 6325 transitions. [2022-11-20 11:43:31,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:43:31,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 6325 transitions. [2022-11-20 11:43:31,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 126.5) internal successors, (6325), 50 states have internal predecessors, (6325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:31,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 212.0) internal successors, (10812), 51 states have internal predecessors, (10812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:31,194 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 212.0) internal successors, (10812), 51 states have internal predecessors, (10812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:31,194 INFO L175 Difference]: Start difference. First operand has 261 places, 186 transitions, 467 flow. Second operand 50 states and 6325 transitions. [2022-11-20 11:43:31,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 580 transitions, 2760 flow [2022-11-20 11:43:31,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 580 transitions, 2160 flow, removed 92 selfloop flow, removed 42 redundant places. [2022-11-20 11:43:31,229 INFO L231 Difference]: Finished difference. Result has 283 places, 230 transitions, 729 flow [2022-11-20 11:43:31,230 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=729, PETRI_PLACES=283, PETRI_TRANSITIONS=230} [2022-11-20 11:43:31,233 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 86 predicate places. [2022-11-20 11:43:31,233 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 230 transitions, 729 flow [2022-11-20 11:43:31,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:31,235 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:43:31,236 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:31,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:43:31,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:43:31,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:31,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1792506332, now seen corresponding path program 4 times [2022-11-20 11:43:31,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:31,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826807806] [2022-11-20 11:43:31,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:31,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:34,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:34,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826807806] [2022-11-20 11:43:34,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826807806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:34,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:34,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:43:34,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843661188] [2022-11-20 11:43:34,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:34,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:43:34,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:34,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:43:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:43:34,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:43:34,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 230 transitions, 729 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:34,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:43:34,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:43:34,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:43:52,257 INFO L130 PetriNetUnfolder]: 1501/5269 cut-off events. [2022-11-20 11:43:52,258 INFO L131 PetriNetUnfolder]: For 2231/2235 co-relation queries the response was YES. [2022-11-20 11:43:52,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11494 conditions, 5269 events. 1501/5269 cut-off events. For 2231/2235 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 42644 event pairs, 208 based on Foata normal form. 1/5032 useless extension candidates. Maximal degree in co-relation 11418. Up to 1164 conditions per place. [2022-11-20 11:43:52,314 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 628 selfloop transitions, 113 changer transitions 23/870 dead transitions. [2022-11-20 11:43:52,314 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 870 transitions, 4669 flow [2022-11-20 11:43:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-20 11:43:52,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-11-20 11:43:52,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 9843 transitions. [2022-11-20 11:43:52,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5952467343976778 [2022-11-20 11:43:52,332 INFO L72 ComplementDD]: Start complementDD. Operand 78 states and 9843 transitions. [2022-11-20 11:43:52,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 9843 transitions. [2022-11-20 11:43:52,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:43:52,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 78 states and 9843 transitions. [2022-11-20 11:43:52,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 79 states, 78 states have (on average 126.1923076923077) internal successors, (9843), 78 states have internal predecessors, (9843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:52,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 79 states, 79 states have (on average 212.0) internal successors, (16748), 79 states have internal predecessors, (16748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:52,391 INFO L81 ComplementDD]: Finished complementDD. Result has 79 states, 79 states have (on average 212.0) internal successors, (16748), 79 states have internal predecessors, (16748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:52,396 INFO L175 Difference]: Start difference. First operand has 283 places, 230 transitions, 729 flow. Second operand 78 states and 9843 transitions. [2022-11-20 11:43:52,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 870 transitions, 4669 flow [2022-11-20 11:43:52,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 870 transitions, 4135 flow, removed 266 selfloop flow, removed 23 redundant places. [2022-11-20 11:43:52,442 INFO L231 Difference]: Finished difference. Result has 379 places, 319 transitions, 1548 flow [2022-11-20 11:43:52,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=78, PETRI_FLOW=1548, PETRI_PLACES=379, PETRI_TRANSITIONS=319} [2022-11-20 11:43:52,443 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 182 predicate places. [2022-11-20 11:43:52,444 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 319 transitions, 1548 flow [2022-11-20 11:43:52,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:52,445 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:43:52,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:52,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:43:52,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:43:52,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:52,447 INFO L85 PathProgramCache]: Analyzing trace with hash 752434644, now seen corresponding path program 5 times [2022-11-20 11:43:52,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:52,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367670177] [2022-11-20 11:43:52,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:52,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:52,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:43:56,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:56,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367670177] [2022-11-20 11:43:56,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367670177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:56,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:56,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:43:56,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42126545] [2022-11-20 11:43:56,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:56,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:43:56,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:56,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:43:56,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:43:56,947 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:43:56,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 319 transitions, 1548 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:43:56,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:43:56,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:43:56,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:44:15,901 INFO L130 PetriNetUnfolder]: 1552/5687 cut-off events. [2022-11-20 11:44:15,901 INFO L131 PetriNetUnfolder]: For 8521/8532 co-relation queries the response was YES. [2022-11-20 11:44:15,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14942 conditions, 5687 events. 1552/5687 cut-off events. For 8521/8532 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 47875 event pairs, 134 based on Foata normal form. 6/5427 useless extension candidates. Maximal degree in co-relation 14822. Up to 494 conditions per place. [2022-11-20 11:44:15,961 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 674 selfloop transitions, 99 changer transitions 54/933 dead transitions. [2022-11-20 11:44:15,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 933 transitions, 6534 flow [2022-11-20 11:44:15,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 11:44:15,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 11:44:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5850 transitions. [2022-11-20 11:44:15,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6132075471698113 [2022-11-20 11:44:15,971 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5850 transitions. [2022-11-20 11:44:15,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5850 transitions. [2022-11-20 11:44:15,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:44:15,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5850 transitions. [2022-11-20 11:44:15,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 130.0) internal successors, (5850), 45 states have internal predecessors, (5850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:15,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 212.0) internal successors, (9752), 46 states have internal predecessors, (9752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:16,003 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 212.0) internal successors, (9752), 46 states have internal predecessors, (9752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:16,003 INFO L175 Difference]: Start difference. First operand has 379 places, 319 transitions, 1548 flow. Second operand 45 states and 5850 transitions. [2022-11-20 11:44:16,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 933 transitions, 6534 flow [2022-11-20 11:44:16,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 933 transitions, 5800 flow, removed 125 selfloop flow, removed 21 redundant places. [2022-11-20 11:44:16,097 INFO L231 Difference]: Finished difference. Result has 419 places, 326 transitions, 1703 flow [2022-11-20 11:44:16,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1377, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=1703, PETRI_PLACES=419, PETRI_TRANSITIONS=326} [2022-11-20 11:44:16,099 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 222 predicate places. [2022-11-20 11:44:16,099 INFO L495 AbstractCegarLoop]: Abstraction has has 419 places, 326 transitions, 1703 flow [2022-11-20 11:44:16,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:16,101 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:44:16,101 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:16,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:44:16,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:44:16,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:16,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1531199970, now seen corresponding path program 6 times [2022-11-20 11:44:16,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:16,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359733971] [2022-11-20 11:44:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:16,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:21,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:21,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:21,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359733971] [2022-11-20 11:44:21,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359733971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:21,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:21,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:44:21,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142710390] [2022-11-20 11:44:21,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:21,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:44:21,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:44:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:44:21,166 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:44:21,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 326 transitions, 1703 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:21,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:44:21,171 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:44:21,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:44:42,620 INFO L130 PetriNetUnfolder]: 2024/7171 cut-off events. [2022-11-20 11:44:42,620 INFO L131 PetriNetUnfolder]: For 17013/17022 co-relation queries the response was YES. [2022-11-20 11:44:42,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21137 conditions, 7171 events. 2024/7171 cut-off events. For 17013/17022 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 62426 event pairs, 1273 based on Foata normal form. 1/6790 useless extension candidates. Maximal degree in co-relation 20995. Up to 1921 conditions per place. [2022-11-20 11:44:42,725 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 548 selfloop transitions, 78 changer transitions 37/769 dead transitions. [2022-11-20 11:44:42,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 769 transitions, 5997 flow [2022-11-20 11:44:42,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 11:44:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-20 11:44:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6716 transitions. [2022-11-20 11:44:42,743 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5977216091135635 [2022-11-20 11:44:42,743 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6716 transitions. [2022-11-20 11:44:42,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6716 transitions. [2022-11-20 11:44:42,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:44:42,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6716 transitions. [2022-11-20 11:44:42,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 126.71698113207547) internal successors, (6716), 53 states have internal predecessors, (6716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:42,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 212.0) internal successors, (11448), 54 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:42,792 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 212.0) internal successors, (11448), 54 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:42,792 INFO L175 Difference]: Start difference. First operand has 419 places, 326 transitions, 1703 flow. Second operand 53 states and 6716 transitions. [2022-11-20 11:44:42,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 769 transitions, 5997 flow [2022-11-20 11:44:42,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 769 transitions, 5238 flow, removed 85 selfloop flow, removed 40 redundant places. [2022-11-20 11:44:42,950 INFO L231 Difference]: Finished difference. Result has 450 places, 373 transitions, 2107 flow [2022-11-20 11:44:42,951 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1466, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=2107, PETRI_PLACES=450, PETRI_TRANSITIONS=373} [2022-11-20 11:44:42,954 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 253 predicate places. [2022-11-20 11:44:42,955 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 373 transitions, 2107 flow [2022-11-20 11:44:42,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:42,957 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:44:42,957 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:42,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:44:42,958 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:44:42,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:42,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1607488846, now seen corresponding path program 7 times [2022-11-20 11:44:42,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:42,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226907960] [2022-11-20 11:44:42,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:42,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:44:46,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:46,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226907960] [2022-11-20 11:44:46,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226907960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:46,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:46,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:44:46,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466503997] [2022-11-20 11:44:46,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:46,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:44:46,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:44:46,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:44:46,137 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:44:46,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 373 transitions, 2107 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:44:46,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:44:46,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:44:46,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:04,283 INFO L130 PetriNetUnfolder]: 2674/9602 cut-off events. [2022-11-20 11:45:04,283 INFO L131 PetriNetUnfolder]: For 26157/26164 co-relation queries the response was YES. [2022-11-20 11:45:04,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29049 conditions, 9602 events. 2674/9602 cut-off events. For 26157/26164 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 90955 event pairs, 325 based on Foata normal form. 6/9165 useless extension candidates. Maximal degree in co-relation 28868. Up to 1969 conditions per place. [2022-11-20 11:45:04,398 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 1002 selfloop transitions, 223 changer transitions 25/1356 dead transitions. [2022-11-20 11:45:04,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 506 places, 1356 transitions, 11347 flow [2022-11-20 11:45:04,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-11-20 11:45:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2022-11-20 11:45:04,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 10280 transitions. [2022-11-20 11:45:04,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5986489634288377 [2022-11-20 11:45:04,412 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 10280 transitions. [2022-11-20 11:45:04,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 10280 transitions. [2022-11-20 11:45:04,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:04,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 10280 transitions. [2022-11-20 11:45:04,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 126.91358024691358) internal successors, (10280), 81 states have internal predecessors, (10280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:04,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 212.0) internal successors, (17384), 82 states have internal predecessors, (17384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:04,450 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 212.0) internal successors, (17384), 82 states have internal predecessors, (17384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:04,451 INFO L175 Difference]: Start difference. First operand has 450 places, 373 transitions, 2107 flow. Second operand 81 states and 10280 transitions. [2022-11-20 11:45:04,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 506 places, 1356 transitions, 11347 flow [2022-11-20 11:45:04,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 1356 transitions, 10337 flow, removed 505 selfloop flow, removed 23 redundant places. [2022-11-20 11:45:04,667 INFO L231 Difference]: Finished difference. Result has 541 places, 513 transitions, 3986 flow [2022-11-20 11:45:04,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=3986, PETRI_PLACES=541, PETRI_TRANSITIONS=513} [2022-11-20 11:45:04,669 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 344 predicate places. [2022-11-20 11:45:04,669 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 513 transitions, 3986 flow [2022-11-20 11:45:04,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:04,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:04,671 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:04,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:45:04,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:45:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1215881632, now seen corresponding path program 8 times [2022-11-20 11:45:04,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:04,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805611551] [2022-11-20 11:45:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:04,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:08,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:08,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:08,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805611551] [2022-11-20 11:45:08,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805611551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:08,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:08,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:45:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584586351] [2022-11-20 11:45:08,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:08,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:45:08,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:45:08,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:45:08,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:45:08,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 513 transitions, 3986 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:08,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:08,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:45:08,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:29,960 INFO L130 PetriNetUnfolder]: 2686/9499 cut-off events. [2022-11-20 11:45:29,960 INFO L131 PetriNetUnfolder]: For 46101/46146 co-relation queries the response was YES. [2022-11-20 11:45:30,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32858 conditions, 9499 events. 2686/9499 cut-off events. For 46101/46146 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 89171 event pairs, 1578 based on Foata normal form. 10/9028 useless extension candidates. Maximal degree in co-relation 32641. Up to 3241 conditions per place. [2022-11-20 11:45:30,149 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 677 selfloop transitions, 118 changer transitions 34/935 dead transitions. [2022-11-20 11:45:30,149 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 582 places, 935 transitions, 8820 flow [2022-11-20 11:45:30,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-11-20 11:45:30,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-11-20 11:45:30,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 6849 transitions. [2022-11-20 11:45:30,164 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5982704402515723 [2022-11-20 11:45:30,164 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 6849 transitions. [2022-11-20 11:45:30,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 6849 transitions. [2022-11-20 11:45:30,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:30,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 6849 transitions. [2022-11-20 11:45:30,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 126.83333333333333) internal successors, (6849), 54 states have internal predecessors, (6849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 212.0) internal successors, (11660), 55 states have internal predecessors, (11660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,263 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 212.0) internal successors, (11660), 55 states have internal predecessors, (11660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,264 INFO L175 Difference]: Start difference. First operand has 541 places, 513 transitions, 3986 flow. Second operand 54 states and 6849 transitions. [2022-11-20 11:45:30,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 582 places, 935 transitions, 8820 flow [2022-11-20 11:45:30,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 561 places, 935 transitions, 7740 flow, removed 306 selfloop flow, removed 21 redundant places. [2022-11-20 11:45:30,718 INFO L231 Difference]: Finished difference. Result has 587 places, 520 transitions, 3619 flow [2022-11-20 11:45:30,719 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3259, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3619, PETRI_PLACES=587, PETRI_TRANSITIONS=520} [2022-11-20 11:45:30,719 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 390 predicate places. [2022-11-20 11:45:30,719 INFO L495 AbstractCegarLoop]: Abstraction has has 587 places, 520 transitions, 3619 flow [2022-11-20 11:45:30,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:30,720 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:30,720 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:30,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:45:30,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:45:30,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:30,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1732681116, now seen corresponding path program 9 times [2022-11-20 11:45:30,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:30,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007437860] [2022-11-20 11:45:30,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:30,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:34,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:45:34,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:34,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007437860] [2022-11-20 11:45:34,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007437860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:34,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:34,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:45:34,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402113367] [2022-11-20 11:45:34,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:34,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:45:34,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:34,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:45:34,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:45:34,204 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:45:34,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 520 transitions, 3619 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:34,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:45:34,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:45:34,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:45:57,124 INFO L130 PetriNetUnfolder]: 3587/12994 cut-off events. [2022-11-20 11:45:57,124 INFO L131 PetriNetUnfolder]: For 73843/73886 co-relation queries the response was YES. [2022-11-20 11:45:57,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45534 conditions, 12994 events. 3587/12994 cut-off events. For 73843/73886 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 132305 event pairs, 1731 based on Foata normal form. 10/12327 useless extension candidates. Maximal degree in co-relation 45273. Up to 4023 conditions per place. [2022-11-20 11:45:57,494 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 901 selfloop transitions, 170 changer transitions 21/1198 dead transitions. [2022-11-20 11:45:57,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 1198 transitions, 11511 flow [2022-11-20 11:45:57,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-20 11:45:57,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-11-20 11:45:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 9141 transitions. [2022-11-20 11:45:57,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5988600628930818 [2022-11-20 11:45:57,513 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 9141 transitions. [2022-11-20 11:45:57,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 9141 transitions. [2022-11-20 11:45:57,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:45:57,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 9141 transitions. [2022-11-20 11:45:57,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 126.95833333333333) internal successors, (9141), 72 states have internal predecessors, (9141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:57,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 212.0) internal successors, (15476), 73 states have internal predecessors, (15476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:57,567 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 212.0) internal successors, (15476), 73 states have internal predecessors, (15476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:57,567 INFO L175 Difference]: Start difference. First operand has 587 places, 520 transitions, 3619 flow. Second operand 72 states and 9141 transitions. [2022-11-20 11:45:57,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 1198 transitions, 11511 flow [2022-11-20 11:45:58,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 1198 transitions, 10809 flow, removed 246 selfloop flow, removed 47 redundant places. [2022-11-20 11:45:58,191 INFO L231 Difference]: Finished difference. Result has 649 places, 619 transitions, 5454 flow [2022-11-20 11:45:58,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3353, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=5454, PETRI_PLACES=649, PETRI_TRANSITIONS=619} [2022-11-20 11:45:58,192 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 452 predicate places. [2022-11-20 11:45:58,193 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 619 transitions, 5454 flow [2022-11-20 11:45:58,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:45:58,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:45:58,193 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:58,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:45:58,194 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:45:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1795638912, now seen corresponding path program 10 times [2022-11-20 11:45:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:58,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247959991] [2022-11-20 11:45:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:01,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:01,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247959991] [2022-11-20 11:46:01,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247959991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:01,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:01,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:46:01,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890196127] [2022-11-20 11:46:01,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:01,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:46:01,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:01,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:46:01,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:46:01,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:46:01,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 619 transitions, 5454 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:01,318 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:01,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:46:01,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:46:26,422 INFO L130 PetriNetUnfolder]: 4259/15744 cut-off events. [2022-11-20 11:46:26,423 INFO L131 PetriNetUnfolder]: For 133779/133811 co-relation queries the response was YES. [2022-11-20 11:46:26,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60722 conditions, 15744 events. 4259/15744 cut-off events. For 133779/133811 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 168402 event pairs, 1328 based on Foata normal form. 6/14932 useless extension candidates. Maximal degree in co-relation 60402. Up to 4724 conditions per place. [2022-11-20 11:46:27,030 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 1166 selfloop transitions, 296 changer transitions 25/1593 dead transitions. [2022-11-20 11:46:27,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 1593 transitions, 17607 flow [2022-11-20 11:46:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-11-20 11:46:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2022-11-20 11:46:27,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 10578 transitions. [2022-11-20 11:46:27,046 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.601159354398727 [2022-11-20 11:46:27,047 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 10578 transitions. [2022-11-20 11:46:27,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 10578 transitions. [2022-11-20 11:46:27,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:46:27,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 10578 transitions. [2022-11-20 11:46:27,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 127.44578313253012) internal successors, (10578), 83 states have internal predecessors, (10578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:27,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 212.0) internal successors, (17808), 84 states have internal predecessors, (17808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:27,091 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 212.0) internal successors, (17808), 84 states have internal predecessors, (17808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:27,091 INFO L175 Difference]: Start difference. First operand has 649 places, 619 transitions, 5454 flow. Second operand 83 states and 10578 transitions. [2022-11-20 11:46:27,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 1593 transitions, 17607 flow [2022-11-20 11:46:28,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 1593 transitions, 16281 flow, removed 655 selfloop flow, removed 13 redundant places. [2022-11-20 11:46:28,251 INFO L231 Difference]: Finished difference. Result has 759 places, 712 transitions, 6906 flow [2022-11-20 11:46:28,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=4454, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=6906, PETRI_PLACES=759, PETRI_TRANSITIONS=712} [2022-11-20 11:46:28,254 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 562 predicate places. [2022-11-20 11:46:28,254 INFO L495 AbstractCegarLoop]: Abstraction has has 759 places, 712 transitions, 6906 flow [2022-11-20 11:46:28,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:28,255 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:46:28,256 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:28,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:46:28,256 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:46:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1111575394, now seen corresponding path program 11 times [2022-11-20 11:46:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:28,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130856785] [2022-11-20 11:46:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:28,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:32,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:46:32,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:32,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130856785] [2022-11-20 11:46:32,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130856785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:32,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:32,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:46:32,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231094288] [2022-11-20 11:46:32,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:32,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:46:32,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:32,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:46:32,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=1180, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:46:32,173 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:46:32,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 759 places, 712 transitions, 6906 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:46:32,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:46:32,177 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:46:32,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 11:47:01,420 INFO L130 PetriNetUnfolder]: 4289/15502 cut-off events. [2022-11-20 11:47:01,421 INFO L131 PetriNetUnfolder]: For 171269/171397 co-relation queries the response was YES. [2022-11-20 11:47:02,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64293 conditions, 15502 events. 4289/15502 cut-off events. For 171269/171397 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 164275 event pairs, 2967 based on Foata normal form. 12/14683 useless extension candidates. Maximal degree in co-relation 63932. Up to 6674 conditions per place. [2022-11-20 11:47:02,122 INFO L137 encePairwiseOnDemand]: 169/212 looper letters, 847 selfloop transitions, 141 changer transitions 34/1128 dead transitions. [2022-11-20 11:47:02,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 799 places, 1128 transitions, 13121 flow [2022-11-20 11:47:02,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-20 11:47:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-11-20 11:47:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 6720 transitions. [2022-11-20 11:47:02,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5980776076895692 [2022-11-20 11:47:02,132 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 6720 transitions. [2022-11-20 11:47:02,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 6720 transitions. [2022-11-20 11:47:02,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 11:47:02,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 6720 transitions. [2022-11-20 11:47:02,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 126.79245283018868) internal successors, (6720), 53 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:02,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 212.0) internal successors, (11448), 54 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:02,160 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 212.0) internal successors, (11448), 54 states have internal predecessors, (11448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:02,161 INFO L175 Difference]: Start difference. First operand has 759 places, 712 transitions, 6906 flow. Second operand 53 states and 6720 transitions. [2022-11-20 11:47:02,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 799 places, 1128 transitions, 13121 flow [2022-11-20 11:47:03,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 1128 transitions, 11493 flow, removed 554 selfloop flow, removed 33 redundant places. [2022-11-20 11:47:03,682 INFO L231 Difference]: Finished difference. Result has 792 places, 720 transitions, 6061 flow [2022-11-20 11:47:03,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=5623, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6061, PETRI_PLACES=792, PETRI_TRANSITIONS=720} [2022-11-20 11:47:03,683 INFO L288 CegarLoopForPetriNet]: 197 programPoint places, 595 predicate places. [2022-11-20 11:47:03,684 INFO L495 AbstractCegarLoop]: Abstraction has has 792 places, 720 transitions, 6061 flow [2022-11-20 11:47:03,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:03,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 11:47:03,687 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:03,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:47:03,688 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 11:47:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash -642098106, now seen corresponding path program 12 times [2022-11-20 11:47:03,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:03,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959064010] [2022-11-20 11:47:03,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:03,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:47:06,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:06,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959064010] [2022-11-20 11:47:06,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959064010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:06,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:06,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-11-20 11:47:06,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871041861] [2022-11-20 11:47:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:06,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 11:47:06,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:06,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 11:47:06,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1172, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:47:06,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 212 [2022-11-20 11:47:06,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 720 transitions, 6061 flow. Second operand has 36 states, 36 states have (on average 119.22222222222223) internal successors, (4292), 36 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:47:06,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 11:47:06,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 212 [2022-11-20 11:47:06,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand