./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix018.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix018.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ --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 a7349305eeae716fa3a7c11218caa894d6e5121d77db0055a98af7bd7c666586 --- 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-dbf71c6-m [2022-10-17 10:35:27,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:35:27,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:35:27,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:35:27,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:35:27,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:35:27,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:35:27,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:35:27,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:35:27,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:35:27,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:35:27,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:35:27,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:35:27,492 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:35:27,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:35:27,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:35:27,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:35:27,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:35:27,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:35:27,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:35:27,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:35:27,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:35:27,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:35:27,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:35:27,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:35:27,515 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:35:27,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:35:27,517 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:35:27,517 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:35:27,518 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:35:27,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:35:27,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:35:27,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:35:27,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:35:27,527 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:35:27,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:35:27,528 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:35:27,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:35:27,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:35:27,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:35:27,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:35:27,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:35:27,596 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:35:27,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:35:27,597 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:35:27,597 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:35:27,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:35:27,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:35:27,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:35:27,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:35:27,599 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:35:27,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:35:27,601 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:35:27,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:35:27,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:35:27,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:35:27,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:35:27,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:35:27,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:35:27,603 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:35:27,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:35:27,603 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:35:27,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:35:27,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:35:27,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:35:27,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:35:27,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:35:27,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:35:27,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:35:27,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:35:27,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:35:27,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:35:27,606 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:35:27,606 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:35:27,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:35:27,607 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_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7349305eeae716fa3a7c11218caa894d6e5121d77db0055a98af7bd7c666586 [2022-10-17 10:35:27,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:35:27,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:35:27,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:35:27,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:35:27,891 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:35:27,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/mix018.opt.i [2022-10-17 10:35:27,958 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/data/7ecceef03/8f327d74afee45e9b9fd164da639218a/FLAG213ce391d [2022-10-17 10:35:28,505 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:35:28,506 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/sv-benchmarks/c/pthread-wmm/mix018.opt.i [2022-10-17 10:35:28,525 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/data/7ecceef03/8f327d74afee45e9b9fd164da639218a/FLAG213ce391d [2022-10-17 10:35:28,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/data/7ecceef03/8f327d74afee45e9b9fd164da639218a [2022-10-17 10:35:28,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:35:28,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:35:28,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:35:28,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:35:28,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:35:28,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:35:28" (1/1) ... [2022-10-17 10:35:28,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3021fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:28, skipping insertion in model container [2022-10-17 10:35:28,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:35:28" (1/1) ... [2022-10-17 10:35:28,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:35:28,851 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:35:29,042 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/sv-benchmarks/c/pthread-wmm/mix018.opt.i[944,957] [2022-10-17 10:35:29,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:35:29,356 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:35:29,376 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/sv-benchmarks/c/pthread-wmm/mix018.opt.i[944,957] [2022-10-17 10:35:29,472 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:35:29,535 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:35:29,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29 WrapperNode [2022-10-17 10:35:29,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:35:29,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:35:29,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:35:29,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:35:29,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,629 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 295 [2022-10-17 10:35:29,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:35:29,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:35:29,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:35:29,630 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:35:29,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,673 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:35:29,698 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:35:29,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:35:29,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:35:29,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (1/1) ... [2022-10-17 10:35:29,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:35:29,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:35:29,761 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:35:29,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c603e609-2b5d-4eae-add0-67de412cf671/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:35:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:35:29,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:35:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:35:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:35:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:35:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:35:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:35:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:35:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:35:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:35:29,815 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:35:29,815 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:35:29,816 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:35:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:35:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:35:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:35:29,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:35:29,818 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 10:35:29,964 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:35:29,966 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:35:30,742 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:35:31,392 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:35:31,393 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:35:31,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:35:31 BoogieIcfgContainer [2022-10-17 10:35:31,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:35:31,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:35:31,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:35:31,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:35:31,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:35:28" (1/3) ... [2022-10-17 10:35:31,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6098b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:35:31, skipping insertion in model container [2022-10-17 10:35:31,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:35:29" (2/3) ... [2022-10-17 10:35:31,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a6098b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:35:31, skipping insertion in model container [2022-10-17 10:35:31,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:35:31" (3/3) ... [2022-10-17 10:35:31,409 INFO L112 eAbstractionObserver]: Analyzing ICFG mix018.opt.i [2022-10-17 10:35:31,419 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:35:31,429 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:35:31,429 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:35:31,429 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:35:31,535 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:35:31,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 135 transitions, 290 flow [2022-10-17 10:35:31,667 INFO L130 PetriNetUnfolder]: 2/131 cut-off events. [2022-10-17 10:35:31,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:35:31,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 131 events. 2/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/127 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-10-17 10:35:31,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 135 transitions, 290 flow [2022-10-17 10:35:31,677 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 274 flow [2022-10-17 10:35:31,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:35:31,694 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;@7e3f2cdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:35:31,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:35:31,717 INFO L130 PetriNetUnfolder]: 0/90 cut-off events. [2022-10-17 10:35:31,717 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:35:31,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:31,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:31,718 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P3Err0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:35:31,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:31,723 INFO L85 PathProgramCache]: Analyzing trace with hash -193157899, now seen corresponding path program 1 times [2022-10-17 10:35:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:31,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106644537] [2022-10-17 10:35:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:32,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:32,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106644537] [2022-10-17 10:35:32,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106644537] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:32,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:32,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:35:32,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653635539] [2022-10-17 10:35:32,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:32,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:35:32,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:35:32,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:35:32,695 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 135 [2022-10-17 10:35:32,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 131 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:32,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:32,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 135 [2022-10-17 10:35:32,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:32,896 INFO L130 PetriNetUnfolder]: 14/212 cut-off events. [2022-10-17 10:35:32,897 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-10-17 10:35:32,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 212 events. 14/212 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 436 event pairs, 6 based on Foata normal form. 5/206 useless extension candidates. Maximal degree in co-relation 205. Up to 25 conditions per place. [2022-10-17 10:35:32,904 INFO L137 encePairwiseOnDemand]: 130/135 looper letters, 10 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2022-10-17 10:35:32,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 129 transitions, 294 flow [2022-10-17 10:35:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:35:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:35:32,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 380 transitions. [2022-10-17 10:35:32,926 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9382716049382716 [2022-10-17 10:35:32,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 380 transitions. [2022-10-17 10:35:32,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 380 transitions. [2022-10-17 10:35:32,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:32,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 380 transitions. [2022-10-17 10:35:32,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:32,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:32,952 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:32,954 INFO L175 Difference]: Start difference. First operand has 142 places, 131 transitions, 274 flow. Second operand 3 states and 380 transitions. [2022-10-17 10:35:32,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 129 transitions, 294 flow [2022-10-17 10:35:32,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 129 transitions, 290 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:35:32,970 INFO L231 Difference]: Finished difference. Result has 138 places, 127 transitions, 266 flow [2022-10-17 10:35:32,972 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=138, PETRI_TRANSITIONS=127} [2022-10-17 10:35:32,978 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, -4 predicate places. [2022-10-17 10:35:32,979 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 127 transitions, 266 flow [2022-10-17 10:35:32,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:32,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:32,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:32,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:35:32,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:35:32,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:32,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2039374663, now seen corresponding path program 1 times [2022-10-17 10:35:32,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:32,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430624013] [2022-10-17 10:35:32,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:32,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:33,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:33,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430624013] [2022-10-17 10:35:33,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430624013] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:33,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:33,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:35:33,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908082948] [2022-10-17 10:35:33,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:33,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:35:33,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:33,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:35:33,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:35:33,568 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 135 [2022-10-17 10:35:33,575 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 127 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:33,575 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:33,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 135 [2022-10-17 10:35:33,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:34,082 INFO L130 PetriNetUnfolder]: 84/440 cut-off events. [2022-10-17 10:35:34,083 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-10-17 10:35:34,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 440 events. 84/440 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1986 event pairs, 20 based on Foata normal form. 0/428 useless extension candidates. Maximal degree in co-relation 581. Up to 65 conditions per place. [2022-10-17 10:35:34,089 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 16 selfloop transitions, 2 changer transitions 38/153 dead transitions. [2022-10-17 10:35:34,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 153 transitions, 410 flow [2022-10-17 10:35:34,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:35:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:35:34,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1071 transitions. [2022-10-17 10:35:34,095 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8814814814814815 [2022-10-17 10:35:34,096 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1071 transitions. [2022-10-17 10:35:34,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1071 transitions. [2022-10-17 10:35:34,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:34,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1071 transitions. [2022-10-17 10:35:34,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 119.0) internal successors, (1071), 9 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:34,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:34,108 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:34,109 INFO L175 Difference]: Start difference. First operand has 138 places, 127 transitions, 266 flow. Second operand 9 states and 1071 transitions. [2022-10-17 10:35:34,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 153 transitions, 410 flow [2022-10-17 10:35:34,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 153 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:35:34,116 INFO L231 Difference]: Finished difference. Result has 151 places, 113 transitions, 254 flow [2022-10-17 10:35:34,117 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=254, PETRI_PLACES=151, PETRI_TRANSITIONS=113} [2022-10-17 10:35:34,118 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 9 predicate places. [2022-10-17 10:35:34,118 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 113 transitions, 254 flow [2022-10-17 10:35:34,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:34,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:34,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:34,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:35:34,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:35:34,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:34,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1913398270, now seen corresponding path program 1 times [2022-10-17 10:35:34,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:34,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010861620] [2022-10-17 10:35:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:34,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:34,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:34,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:34,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010861620] [2022-10-17 10:35:34,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010861620] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:34,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:34,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:35:34,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75186778] [2022-10-17 10:35:34,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:34,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:35:34,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:34,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:35:34,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:35:34,613 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 135 [2022-10-17 10:35:34,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 113 transitions, 254 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:34,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:34,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 135 [2022-10-17 10:35:34,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:36,146 INFO L130 PetriNetUnfolder]: 1189/2604 cut-off events. [2022-10-17 10:35:36,146 INFO L131 PetriNetUnfolder]: For 575/575 co-relation queries the response was YES. [2022-10-17 10:35:36,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5077 conditions, 2604 events. 1189/2604 cut-off events. For 575/575 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18270 event pairs, 347 based on Foata normal form. 53/2562 useless extension candidates. Maximal degree in co-relation 5009. Up to 876 conditions per place. [2022-10-17 10:35:36,175 INFO L137 encePairwiseOnDemand]: 122/135 looper letters, 38 selfloop transitions, 11 changer transitions 59/197 dead transitions. [2022-10-17 10:35:36,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 197 transitions, 694 flow [2022-10-17 10:35:36,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:35:36,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:35:36,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1489 transitions. [2022-10-17 10:35:36,183 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8484330484330485 [2022-10-17 10:35:36,184 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1489 transitions. [2022-10-17 10:35:36,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1489 transitions. [2022-10-17 10:35:36,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:36,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1489 transitions. [2022-10-17 10:35:36,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 114.53846153846153) internal successors, (1489), 13 states have internal predecessors, (1489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:36,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:36,198 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:36,198 INFO L175 Difference]: Start difference. First operand has 151 places, 113 transitions, 254 flow. Second operand 13 states and 1489 transitions. [2022-10-17 10:35:36,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 197 transitions, 694 flow [2022-10-17 10:35:36,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 197 transitions, 638 flow, removed 24 selfloop flow, removed 8 redundant places. [2022-10-17 10:35:36,234 INFO L231 Difference]: Finished difference. Result has 146 places, 120 transitions, 337 flow [2022-10-17 10:35:36,234 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=337, PETRI_PLACES=146, PETRI_TRANSITIONS=120} [2022-10-17 10:35:36,237 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 4 predicate places. [2022-10-17 10:35:36,237 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 120 transitions, 337 flow [2022-10-17 10:35:36,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:36,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:36,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:36,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:35:36,239 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:35:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:36,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1977425509, now seen corresponding path program 1 times [2022-10-17 10:35:36,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:36,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429391282] [2022-10-17 10:35:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:36,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:36,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:36,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:36,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429391282] [2022-10-17 10:35:36,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429391282] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:36,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:36,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:35:36,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007945599] [2022-10-17 10:35:36,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:36,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:35:36,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:36,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:35:36,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:35:36,706 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-10-17 10:35:36,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 120 transitions, 337 flow. Second operand has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:36,708 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:36,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-10-17 10:35:36,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:41,810 INFO L130 PetriNetUnfolder]: 7286/12482 cut-off events. [2022-10-17 10:35:41,810 INFO L131 PetriNetUnfolder]: For 13422/15140 co-relation queries the response was YES. [2022-10-17 10:35:41,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31655 conditions, 12482 events. 7286/12482 cut-off events. For 13422/15140 co-relation queries the response was YES. Maximal size of possible extension queue 1085. Compared 101753 event pairs, 621 based on Foata normal form. 12/11259 useless extension candidates. Maximal degree in co-relation 31583. Up to 4173 conditions per place. [2022-10-17 10:35:41,964 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 85 selfloop transitions, 20 changer transitions 0/202 dead transitions. [2022-10-17 10:35:41,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 202 transitions, 843 flow [2022-10-17 10:35:41,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:35:41,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:35:41,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1191 transitions. [2022-10-17 10:35:41,969 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8822222222222222 [2022-10-17 10:35:41,969 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1191 transitions. [2022-10-17 10:35:41,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1191 transitions. [2022-10-17 10:35:41,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:41,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1191 transitions. [2022-10-17 10:35:41,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.1) internal successors, (1191), 10 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:41,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:41,979 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:41,979 INFO L175 Difference]: Start difference. First operand has 146 places, 120 transitions, 337 flow. Second operand 10 states and 1191 transitions. [2022-10-17 10:35:41,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 202 transitions, 843 flow [2022-10-17 10:35:42,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 202 transitions, 831 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-10-17 10:35:42,019 INFO L231 Difference]: Finished difference. Result has 146 places, 138 transitions, 468 flow [2022-10-17 10:35:42,020 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=468, PETRI_PLACES=146, PETRI_TRANSITIONS=138} [2022-10-17 10:35:42,021 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 4 predicate places. [2022-10-17 10:35:42,021 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 138 transitions, 468 flow [2022-10-17 10:35:42,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:42,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:42,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:42,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:35:42,023 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:35:42,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:42,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1716581180, now seen corresponding path program 1 times [2022-10-17 10:35:42,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:42,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191066288] [2022-10-17 10:35:42,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:42,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:42,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:42,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:42,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:42,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191066288] [2022-10-17 10:35:42,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191066288] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:42,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:42,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:35:42,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080624245] [2022-10-17 10:35:42,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:42,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:35:42,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:42,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:35:42,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:35:42,337 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 135 [2022-10-17 10:35:42,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 468 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:42,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:42,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 135 [2022-10-17 10:35:42,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:44,476 INFO L130 PetriNetUnfolder]: 2101/6617 cut-off events. [2022-10-17 10:35:44,477 INFO L131 PetriNetUnfolder]: For 8060/9533 co-relation queries the response was YES. [2022-10-17 10:35:44,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17981 conditions, 6617 events. 2101/6617 cut-off events. For 8060/9533 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 71391 event pairs, 847 based on Foata normal form. 112/6201 useless extension candidates. Maximal degree in co-relation 17906. Up to 1652 conditions per place. [2022-10-17 10:35:44,572 INFO L137 encePairwiseOnDemand]: 129/135 looper letters, 45 selfloop transitions, 12 changer transitions 0/172 dead transitions. [2022-10-17 10:35:44,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 172 transitions, 741 flow [2022-10-17 10:35:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:35:44,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:35:44,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1063 transitions. [2022-10-17 10:35:44,576 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8748971193415638 [2022-10-17 10:35:44,576 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1063 transitions. [2022-10-17 10:35:44,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1063 transitions. [2022-10-17 10:35:44,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:44,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1063 transitions. [2022-10-17 10:35:44,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.11111111111111) internal successors, (1063), 9 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:44,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:44,585 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:44,585 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 468 flow. Second operand 9 states and 1063 transitions. [2022-10-17 10:35:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 172 transitions, 741 flow [2022-10-17 10:35:44,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 172 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-10-17 10:35:44,625 INFO L231 Difference]: Finished difference. Result has 160 places, 146 transitions, 560 flow [2022-10-17 10:35:44,626 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=560, PETRI_PLACES=160, PETRI_TRANSITIONS=146} [2022-10-17 10:35:44,628 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 18 predicate places. [2022-10-17 10:35:44,628 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 146 transitions, 560 flow [2022-10-17 10:35:44,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:44,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:44,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:44,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:35:44,630 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:35:44,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:44,631 INFO L85 PathProgramCache]: Analyzing trace with hash -839566244, now seen corresponding path program 1 times [2022-10-17 10:35:44,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:44,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246485170] [2022-10-17 10:35:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:44,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:45,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:45,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:45,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246485170] [2022-10-17 10:35:45,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246485170] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:45,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:45,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:35:45,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582875323] [2022-10-17 10:35:45,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:45,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:35:45,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:45,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:35:45,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:35:45,028 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-10-17 10:35:45,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 146 transitions, 560 flow. Second operand has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:45,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:45,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-10-17 10:35:45,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:50,107 INFO L130 PetriNetUnfolder]: 9522/17022 cut-off events. [2022-10-17 10:35:50,108 INFO L131 PetriNetUnfolder]: For 43427/47550 co-relation queries the response was YES. [2022-10-17 10:35:50,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61086 conditions, 17022 events. 9522/17022 cut-off events. For 43427/47550 co-relation queries the response was YES. Maximal size of possible extension queue 1453. Compared 153010 event pairs, 554 based on Foata normal form. 653/16608 useless extension candidates. Maximal degree in co-relation 61004. Up to 5066 conditions per place. [2022-10-17 10:35:50,234 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 101 selfloop transitions, 34 changer transitions 13/253 dead transitions. [2022-10-17 10:35:50,234 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 253 transitions, 1456 flow [2022-10-17 10:35:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:35:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-10-17 10:35:50,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1552 transitions. [2022-10-17 10:35:50,240 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8843304843304843 [2022-10-17 10:35:50,240 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1552 transitions. [2022-10-17 10:35:50,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1552 transitions. [2022-10-17 10:35:50,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:50,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1552 transitions. [2022-10-17 10:35:50,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 119.38461538461539) internal successors, (1552), 13 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:50,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:50,252 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 135.0) internal successors, (1890), 14 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:50,252 INFO L175 Difference]: Start difference. First operand has 160 places, 146 transitions, 560 flow. Second operand 13 states and 1552 transitions. [2022-10-17 10:35:50,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 253 transitions, 1456 flow [2022-10-17 10:35:50,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 253 transitions, 1444 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-10-17 10:35:50,521 INFO L231 Difference]: Finished difference. Result has 177 places, 162 transitions, 801 flow [2022-10-17 10:35:50,522 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=801, PETRI_PLACES=177, PETRI_TRANSITIONS=162} [2022-10-17 10:35:50,524 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 35 predicate places. [2022-10-17 10:35:50,524 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 162 transitions, 801 flow [2022-10-17 10:35:50,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.14285714285714) internal successors, (785), 7 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:50,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:50,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:50,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:35:50,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:35:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash -573530045, now seen corresponding path program 1 times [2022-10-17 10:35:50,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:50,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767774438] [2022-10-17 10:35:50,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:50,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:50,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:50,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:50,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767774438] [2022-10-17 10:35:50,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767774438] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:50,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:50,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:35:50,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985133740] [2022-10-17 10:35:50,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:50,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:35:50,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:50,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:35:50,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:35:50,933 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 135 [2022-10-17 10:35:50,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 162 transitions, 801 flow. Second operand has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:50,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:50,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 135 [2022-10-17 10:35:50,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:35:55,935 INFO L130 PetriNetUnfolder]: 8487/16026 cut-off events. [2022-10-17 10:35:55,935 INFO L131 PetriNetUnfolder]: For 75907/82410 co-relation queries the response was YES. [2022-10-17 10:35:56,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69147 conditions, 16026 events. 8487/16026 cut-off events. For 75907/82410 co-relation queries the response was YES. Maximal size of possible extension queue 1449. Compared 153004 event pairs, 271 based on Foata normal form. 933/15981 useless extension candidates. Maximal degree in co-relation 69057. Up to 4295 conditions per place. [2022-10-17 10:35:56,064 INFO L137 encePairwiseOnDemand]: 124/135 looper letters, 100 selfloop transitions, 50 changer transitions 47/294 dead transitions. [2022-10-17 10:35:56,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 294 transitions, 2099 flow [2022-10-17 10:35:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:35:56,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-10-17 10:35:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1908 transitions. [2022-10-17 10:35:56,072 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2022-10-17 10:35:56,072 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1908 transitions. [2022-10-17 10:35:56,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1908 transitions. [2022-10-17 10:35:56,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:35:56,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1908 transitions. [2022-10-17 10:35:56,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 119.25) internal successors, (1908), 16 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:56,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:56,087 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 135.0) internal successors, (2295), 17 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:56,087 INFO L175 Difference]: Start difference. First operand has 177 places, 162 transitions, 801 flow. Second operand 16 states and 1908 transitions. [2022-10-17 10:35:56,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 294 transitions, 2099 flow [2022-10-17 10:35:58,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 294 transitions, 2005 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-10-17 10:35:58,023 INFO L231 Difference]: Finished difference. Result has 193 places, 175 transitions, 1062 flow [2022-10-17 10:35:58,024 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=715, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1062, PETRI_PLACES=193, PETRI_TRANSITIONS=175} [2022-10-17 10:35:58,024 INFO L287 CegarLoopForPetriNet]: 142 programPoint places, 51 predicate places. [2022-10-17 10:35:58,025 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 175 transitions, 1062 flow [2022-10-17 10:35:58,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 112.125) internal successors, (897), 8 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:58,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:35:58,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:35:58,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:35:58,026 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:35:58,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:35:58,027 INFO L85 PathProgramCache]: Analyzing trace with hash -795821873, now seen corresponding path program 1 times [2022-10-17 10:35:58,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:35:58,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302350655] [2022-10-17 10:35:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:35:58,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:35:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:35:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:35:58,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:35:58,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302350655] [2022-10-17 10:35:58,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302350655] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:35:58,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:35:58,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:35:58,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229151440] [2022-10-17 10:35:58,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:35:58,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:35:58,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:35:58,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:35:58,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:35:58,415 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 135 [2022-10-17 10:35:58,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 175 transitions, 1062 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:35:58,416 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:35:58,416 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 135 [2022-10-17 10:35:58,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand