./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_power.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_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/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_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/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_d2b16f30-a848-4d8b-87bb-068608f6fc7e/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 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b --- 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 10:30:17,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:30:17,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:30:17,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:30:17,530 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:30:17,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:30:17,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:30:17,535 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:30:17,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:30:17,539 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:30:17,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:30:17,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:30:17,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:30:17,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:30:17,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:30:17,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:30:17,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:30:17,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:30:17,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:30:17,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:30:17,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:30:17,557 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:30:17,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:30:17,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:30:17,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:30:17,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:30:17,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:30:17,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:30:17,568 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:30:17,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:30:17,569 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:30:17,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:30:17,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:30:17,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:30:17,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:30:17,574 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:30:17,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:30:17,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:30:17,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:30:17,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:30:17,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:30:17,579 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:30:17,606 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:30:17,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:30:17,607 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:30:17,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:30:17,608 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:30:17,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:30:17,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:30:17,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:30:17,610 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:30:17,611 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:30:17,611 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:30:17,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:30:17,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:30:17,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:30:17,612 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:30:17,612 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:30:17,612 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:30:17,613 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:30:17,613 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:30:17,613 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:30:17,613 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:30:17,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:30:17,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:30:17,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:30:17,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:30:17,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:30:17,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:30:17,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:30:17,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:30:17,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:30:17,616 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:30:17,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:30:17,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:30:17,617 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_d2b16f30-a848-4d8b-87bb-068608f6fc7e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3edc5a2d9ce2881b3565fd36253c94b9cf356a0dafd043fa3f9d27823541c09b [2022-10-17 10:30:17,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:30:17,887 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:30:17,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:30:17,892 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:30:17,892 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:30:17,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2022-10-17 10:30:17,969 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/data/fda6e89b6/b7fb0ce613924c4ebeb5b6102672ee05/FLAG680420fd5 [2022-10-17 10:30:18,573 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:30:18,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i [2022-10-17 10:30:18,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/data/fda6e89b6/b7fb0ce613924c4ebeb5b6102672ee05/FLAG680420fd5 [2022-10-17 10:30:18,858 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/data/fda6e89b6/b7fb0ce613924c4ebeb5b6102672ee05 [2022-10-17 10:30:18,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:30:18,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:30:18,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:30:18,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:30:18,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:30:18,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:30:18" (1/1) ... [2022-10-17 10:30:18,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b5a41d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:18, skipping insertion in model container [2022-10-17 10:30:18,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:30:18" (1/1) ... [2022-10-17 10:30:18,878 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:30:18,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:30:19,135 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_d2b16f30-a848-4d8b-87bb-068608f6fc7e/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i[994,1007] [2022-10-17 10:30:19,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:30:19,361 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:30:19,380 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_d2b16f30-a848-4d8b-87bb-068608f6fc7e/sv-benchmarks/c/pthread-wmm/safe027_power.opt.i[994,1007] [2022-10-17 10:30:19,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:30:19,527 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:30:19,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19 WrapperNode [2022-10-17 10:30:19,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:30:19,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:30:19,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:30:19,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:30:19,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,609 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 226 [2022-10-17 10:30:19,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:30:19,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:30:19,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:30:19,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:30:19,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,693 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,703 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:30:19,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:30:19,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:30:19,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:30:19,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (1/1) ... [2022-10-17 10:30:19,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:30:19,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:30:19,743 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:30:19,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2b16f30-a848-4d8b-87bb-068608f6fc7e/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:30:19,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 10:30:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 10:30:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-10-17 10:30:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:30:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 10:30:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:30:19,789 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-10-17 10:30:19,789 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-10-17 10:30:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-10-17 10:30:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-10-17 10:30:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-10-17 10:30:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-10-17 10:30:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-10-17 10:30:19,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-10-17 10:30:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:30:19,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-10-17 10:30:19,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:30:19,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:30:19,793 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 10:30:20,084 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:30:20,087 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:30:21,107 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:30:21,963 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:30:21,963 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:30:21,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:30:21 BoogieIcfgContainer [2022-10-17 10:30:21,966 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:30:21,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:30:21,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:30:21,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:30:21,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:30:18" (1/3) ... [2022-10-17 10:30:21,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286274f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:30:21, skipping insertion in model container [2022-10-17 10:30:21,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:30:19" (2/3) ... [2022-10-17 10:30:21,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@286274f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:30:21, skipping insertion in model container [2022-10-17 10:30:21,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:30:21" (3/3) ... [2022-10-17 10:30:21,975 INFO L112 eAbstractionObserver]: Analyzing ICFG safe027_power.opt.i [2022-10-17 10:30:21,984 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 10:30:21,994 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:30:21,994 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-17 10:30:21,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 10:30:22,123 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-10-17 10:30:22,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 153 transitions, 326 flow [2022-10-17 10:30:22,272 INFO L130 PetriNetUnfolder]: 2/149 cut-off events. [2022-10-17 10:30:22,273 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:30:22,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 61 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-10-17 10:30:22,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 153 transitions, 326 flow [2022-10-17 10:30:22,286 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 149 transitions, 310 flow [2022-10-17 10:30:22,308 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:30:22,318 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;@470bfae0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:30:22,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-10-17 10:30:22,338 INFO L130 PetriNetUnfolder]: 0/82 cut-off events. [2022-10-17 10:30:22,338 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-10-17 10:30:22,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:30:22,339 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] [2022-10-17 10:30:22,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:30:22,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:22,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1502101798, now seen corresponding path program 1 times [2022-10-17 10:30:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:22,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248090311] [2022-10-17 10:30:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:22,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:23,170 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 10:30:23,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:23,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248090311] [2022-10-17 10:30:23,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248090311] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:23,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:23,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:30:23,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886809573] [2022-10-17 10:30:23,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:23,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:30:23,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:23,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:30:23,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:30:23,213 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 153 [2022-10-17 10:30:23,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 149 transitions, 310 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 10:30:23,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:30:23,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 153 [2022-10-17 10:30:23,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:30:23,958 INFO L130 PetriNetUnfolder]: 258/937 cut-off events. [2022-10-17 10:30:23,959 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-10-17 10:30:23,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390 conditions, 937 events. 258/937 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5475 event pairs, 58 based on Foata normal form. 36/917 useless extension candidates. Maximal degree in co-relation 1313. Up to 289 conditions per place. [2022-10-17 10:30:23,977 INFO L137 encePairwiseOnDemand]: 148/153 looper letters, 19 selfloop transitions, 2 changer transitions 0/153 dead transitions. [2022-10-17 10:30:23,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 153 transitions, 366 flow [2022-10-17 10:30:23,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:30:23,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-10-17 10:30:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2022-10-17 10:30:23,999 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9455337690631809 [2022-10-17 10:30:24,000 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2022-10-17 10:30:24,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2022-10-17 10:30:24,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:30:24,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2022-10-17 10:30:24,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 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 10:30:24,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 10:30:24,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 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 10:30:24,029 INFO L175 Difference]: Start difference. First operand has 160 places, 149 transitions, 310 flow. Second operand 3 states and 434 transitions. [2022-10-17 10:30:24,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 153 transitions, 366 flow [2022-10-17 10:30:24,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 153 transitions, 360 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-10-17 10:30:24,041 INFO L231 Difference]: Finished difference. Result has 156 places, 145 transitions, 302 flow [2022-10-17 10:30:24,043 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=302, PETRI_PLACES=156, PETRI_TRANSITIONS=145} [2022-10-17 10:30:24,049 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -4 predicate places. [2022-10-17 10:30:24,050 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 145 transitions, 302 flow [2022-10-17 10:30:24,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 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 10:30:24,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:30:24,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:24,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:30:24,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:30:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 543536506, now seen corresponding path program 1 times [2022-10-17 10:30:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:24,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532660735] [2022-10-17 10:30:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:24,703 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 10:30:24,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:24,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532660735] [2022-10-17 10:30:24,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532660735] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:24,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:24,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:30:24,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771473806] [2022-10-17 10:30:24,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:24,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:30:24,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:24,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:30:24,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:30:24,721 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 153 [2022-10-17 10:30:24,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 145 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 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 10:30:24,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:30:24,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 153 [2022-10-17 10:30:24,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:30:27,077 INFO L130 PetriNetUnfolder]: 1428/3793 cut-off events. [2022-10-17 10:30:27,078 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2022-10-17 10:30:27,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6150 conditions, 3793 events. 1428/3793 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 30645 event pairs, 741 based on Foata normal form. 0/3670 useless extension candidates. Maximal degree in co-relation 6074. Up to 1041 conditions per place. [2022-10-17 10:30:27,104 INFO L137 encePairwiseOnDemand]: 147/153 looper letters, 26 selfloop transitions, 2 changer transitions 59/199 dead transitions. [2022-10-17 10:30:27,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 199 transitions, 578 flow [2022-10-17 10:30:27,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:30:27,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-10-17 10:30:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1237 transitions. [2022-10-17 10:30:27,109 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8983297022512708 [2022-10-17 10:30:27,109 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1237 transitions. [2022-10-17 10:30:27,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1237 transitions. [2022-10-17 10:30:27,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:30:27,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1237 transitions. [2022-10-17 10:30:27,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.44444444444446) internal successors, (1237), 9 states have internal predecessors, (1237), 0 states have call successors, (0), 0 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 10:30:27,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 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 10:30:27,121 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 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 10:30:27,121 INFO L175 Difference]: Start difference. First operand has 156 places, 145 transitions, 302 flow. Second operand 9 states and 1237 transitions. [2022-10-17 10:30:27,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 199 transitions, 578 flow [2022-10-17 10:30:27,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 199 transitions, 560 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-10-17 10:30:27,131 INFO L231 Difference]: Finished difference. Result has 169 places, 131 transitions, 290 flow [2022-10-17 10:30:27,132 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=290, PETRI_PLACES=169, PETRI_TRANSITIONS=131} [2022-10-17 10:30:27,133 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 9 predicate places. [2022-10-17 10:30:27,133 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 131 transitions, 290 flow [2022-10-17 10:30:27,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.0) internal successors, (786), 6 states have internal predecessors, (786), 0 states have call successors, (0), 0 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 10:30:27,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:30:27,135 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:27,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:30:27,135 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:30:27,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1200686363, now seen corresponding path program 1 times [2022-10-17 10:30:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:27,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602986807] [2022-10-17 10:30:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:27,502 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 10:30:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:27,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602986807] [2022-10-17 10:30:27,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602986807] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:27,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:27,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:30:27,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736840003] [2022-10-17 10:30:27,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:27,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:30:27,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:27,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:30:27,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:30:27,506 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 153 [2022-10-17 10:30:27,508 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 131 transitions, 290 flow. Second operand has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 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 10:30:27,508 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:30:27,508 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 153 [2022-10-17 10:30:27,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:30:30,193 INFO L130 PetriNetUnfolder]: 2084/3745 cut-off events. [2022-10-17 10:30:30,194 INFO L131 PetriNetUnfolder]: For 762/762 co-relation queries the response was YES. [2022-10-17 10:30:30,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7701 conditions, 3745 events. 2084/3745 cut-off events. For 762/762 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 23203 event pairs, 384 based on Foata normal form. 72/3673 useless extension candidates. Maximal degree in co-relation 7617. Up to 1149 conditions per place. [2022-10-17 10:30:30,229 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 31 selfloop transitions, 4 changer transitions 53/197 dead transitions. [2022-10-17 10:30:30,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 197 transitions, 621 flow [2022-10-17 10:30:30,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:30:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:30:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1350 transitions. [2022-10-17 10:30:30,235 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8823529411764706 [2022-10-17 10:30:30,236 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1350 transitions. [2022-10-17 10:30:30,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1350 transitions. [2022-10-17 10:30:30,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:30:30,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1350 transitions. [2022-10-17 10:30:30,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 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 10:30:30,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 10:30:30,247 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 10:30:30,248 INFO L175 Difference]: Start difference. First operand has 169 places, 131 transitions, 290 flow. Second operand 10 states and 1350 transitions. [2022-10-17 10:30:30,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 197 transitions, 621 flow [2022-10-17 10:30:30,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 197 transitions, 587 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-10-17 10:30:30,302 INFO L231 Difference]: Finished difference. Result has 158 places, 131 transitions, 304 flow [2022-10-17 10:30:30,303 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=304, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2022-10-17 10:30:30,305 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -2 predicate places. [2022-10-17 10:30:30,306 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 304 flow [2022-10-17 10:30:30,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 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 10:30:30,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:30:30,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:30,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:30:30,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:30:30,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:30,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1066210362, now seen corresponding path program 1 times [2022-10-17 10:30:30,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:30,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116237698] [2022-10-17 10:30:30,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:30,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:30,888 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 10:30:30,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:30,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116237698] [2022-10-17 10:30:30,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116237698] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:30,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:30,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:30:30,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103810123] [2022-10-17 10:30:30,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:30,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:30:30,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:30,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:30:30,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:30:30,897 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 153 [2022-10-17 10:30:30,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 304 flow. Second operand has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 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 10:30:30,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:30:30,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 153 [2022-10-17 10:30:30,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:30:32,181 INFO L130 PetriNetUnfolder]: 719/1513 cut-off events. [2022-10-17 10:30:32,181 INFO L131 PetriNetUnfolder]: For 512/521 co-relation queries the response was YES. [2022-10-17 10:30:32,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3043 conditions, 1513 events. 719/1513 cut-off events. For 512/521 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8388 event pairs, 267 based on Foata normal form. 36/1492 useless extension candidates. Maximal degree in co-relation 2955. Up to 549 conditions per place. [2022-10-17 10:30:32,197 INFO L137 encePairwiseOnDemand]: 146/153 looper letters, 22 selfloop transitions, 3 changer transitions 37/174 dead transitions. [2022-10-17 10:30:32,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 174 transitions, 538 flow [2022-10-17 10:30:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:30:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:30:32,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1354 transitions. [2022-10-17 10:30:32,204 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8849673202614379 [2022-10-17 10:30:32,208 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1354 transitions. [2022-10-17 10:30:32,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1354 transitions. [2022-10-17 10:30:32,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:30:32,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1354 transitions. [2022-10-17 10:30:32,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 135.4) internal successors, (1354), 10 states have internal predecessors, (1354), 0 states have call successors, (0), 0 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 10:30:32,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 10:30:32,221 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 10:30:32,222 INFO L175 Difference]: Start difference. First operand has 158 places, 131 transitions, 304 flow. Second operand 10 states and 1354 transitions. [2022-10-17 10:30:32,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 174 transitions, 538 flow [2022-10-17 10:30:32,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 174 transitions, 492 flow, removed 18 selfloop flow, removed 10 redundant places. [2022-10-17 10:30:32,237 INFO L231 Difference]: Finished difference. Result has 158 places, 131 transitions, 300 flow [2022-10-17 10:30:32,237 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=300, PETRI_PLACES=158, PETRI_TRANSITIONS=131} [2022-10-17 10:30:32,239 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -2 predicate places. [2022-10-17 10:30:32,239 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 131 transitions, 300 flow [2022-10-17 10:30:32,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.85714285714286) internal successors, (916), 7 states have internal predecessors, (916), 0 states have call successors, (0), 0 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 10:30:32,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:30:32,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:32,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:30:32,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:30:32,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:32,241 INFO L85 PathProgramCache]: Analyzing trace with hash -696227399, now seen corresponding path program 1 times [2022-10-17 10:30:32,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:32,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130156116] [2022-10-17 10:30:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:32,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:32,777 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 10:30:32,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:32,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130156116] [2022-10-17 10:30:32,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130156116] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:32,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:32,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:30:32,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310660776] [2022-10-17 10:30:32,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:32,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:30:32,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:32,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:30:32,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:30:32,781 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 153 [2022-10-17 10:30:32,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 131 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 10:30:32,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:30:32,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 153 [2022-10-17 10:30:32,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:30:35,347 INFO L130 PetriNetUnfolder]: 4273/7418 cut-off events. [2022-10-17 10:30:35,347 INFO L131 PetriNetUnfolder]: For 725/725 co-relation queries the response was YES. [2022-10-17 10:30:35,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14934 conditions, 7418 events. 4273/7418 cut-off events. For 725/725 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 51909 event pairs, 214 based on Foata normal form. 0/7269 useless extension candidates. Maximal degree in co-relation 14848. Up to 2518 conditions per place. [2022-10-17 10:30:35,410 INFO L137 encePairwiseOnDemand]: 142/153 looper letters, 38 selfloop transitions, 7 changer transitions 60/212 dead transitions. [2022-10-17 10:30:35,410 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 212 transitions, 697 flow [2022-10-17 10:30:35,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:30:35,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:30:35,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1357 transitions. [2022-10-17 10:30:35,414 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8869281045751634 [2022-10-17 10:30:35,414 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1357 transitions. [2022-10-17 10:30:35,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1357 transitions. [2022-10-17 10:30:35,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:30:35,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1357 transitions. [2022-10-17 10:30:35,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 135.7) internal successors, (1357), 10 states have internal predecessors, (1357), 0 states have call successors, (0), 0 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 10:30:35,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 10:30:35,432 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 10:30:35,432 INFO L175 Difference]: Start difference. First operand has 158 places, 131 transitions, 300 flow. Second operand 10 states and 1357 transitions. [2022-10-17 10:30:35,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 212 transitions, 697 flow [2022-10-17 10:30:35,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 212 transitions, 665 flow, removed 6 selfloop flow, removed 9 redundant places. [2022-10-17 10:30:35,460 INFO L231 Difference]: Finished difference. Result has 158 places, 134 transitions, 348 flow [2022-10-17 10:30:35,460 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=348, PETRI_PLACES=158, PETRI_TRANSITIONS=134} [2022-10-17 10:30:35,461 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -2 predicate places. [2022-10-17 10:30:35,462 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 134 transitions, 348 flow [2022-10-17 10:30:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.33333333333333) internal successors, (764), 6 states have internal predecessors, (764), 0 states have call successors, (0), 0 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 10:30:35,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:30:35,463 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:35,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:30:35,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:30:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash -834557768, now seen corresponding path program 1 times [2022-10-17 10:30:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:35,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569106702] [2022-10-17 10:30:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:36,176 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 10:30:36,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:36,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569106702] [2022-10-17 10:30:36,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569106702] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:36,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:36,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:30:36,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118107655] [2022-10-17 10:30:36,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:36,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:30:36,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:36,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:30:36,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:30:36,181 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 153 [2022-10-17 10:30:36,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 134 transitions, 348 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 10:30:36,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:30:36,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 153 [2022-10-17 10:30:36,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:30:37,876 INFO L130 PetriNetUnfolder]: 1873/3624 cut-off events. [2022-10-17 10:30:37,876 INFO L131 PetriNetUnfolder]: For 4067/4161 co-relation queries the response was YES. [2022-10-17 10:30:37,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10149 conditions, 3624 events. 1873/3624 cut-off events. For 4067/4161 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 24170 event pairs, 65 based on Foata normal form. 108/3706 useless extension candidates. Maximal degree in co-relation 10063. Up to 1001 conditions per place. [2022-10-17 10:30:37,902 INFO L137 encePairwiseOnDemand]: 143/153 looper letters, 45 selfloop transitions, 11 changer transitions 47/210 dead transitions. [2022-10-17 10:30:37,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 210 transitions, 882 flow [2022-10-17 10:30:37,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:30:37,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-10-17 10:30:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1355 transitions. [2022-10-17 10:30:37,908 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8856209150326797 [2022-10-17 10:30:37,908 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1355 transitions. [2022-10-17 10:30:37,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1355 transitions. [2022-10-17 10:30:37,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:30:37,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1355 transitions. [2022-10-17 10:30:37,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 135.5) internal successors, (1355), 10 states have internal predecessors, (1355), 0 states have call successors, (0), 0 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 10:30:37,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 10:30:37,917 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 153.0) internal successors, (1683), 11 states have internal predecessors, (1683), 0 states have call successors, (0), 0 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 10:30:37,917 INFO L175 Difference]: Start difference. First operand has 158 places, 134 transitions, 348 flow. Second operand 10 states and 1355 transitions. [2022-10-17 10:30:37,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 210 transitions, 882 flow [2022-10-17 10:30:37,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 210 transitions, 857 flow, removed 7 selfloop flow, removed 5 redundant places. [2022-10-17 10:30:37,936 INFO L231 Difference]: Finished difference. Result has 162 places, 138 transitions, 436 flow [2022-10-17 10:30:37,937 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=436, PETRI_PLACES=162, PETRI_TRANSITIONS=138} [2022-10-17 10:30:37,938 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 2 predicate places. [2022-10-17 10:30:37,938 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 138 transitions, 436 flow [2022-10-17 10:30:37,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 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 10:30:37,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:30:37,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:37,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:30:37,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:30:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash -390908377, now seen corresponding path program 1 times [2022-10-17 10:30:37,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:37,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732183895] [2022-10-17 10:30:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:37,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:30:42,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:30:42,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:30:42,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732183895] [2022-10-17 10:30:42,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732183895] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:30:42,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:30:42,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-10-17 10:30:42,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999017021] [2022-10-17 10:30:42,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:30:42,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:30:42,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:30:42,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:30:42,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:30:42,462 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 153 [2022-10-17 10:30:42,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 138 transitions, 436 flow. Second operand has 15 states, 15 states have (on average 115.13333333333334) internal successors, (1727), 15 states have internal predecessors, (1727), 0 states have call successors, (0), 0 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 10:30:42,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-10-17 10:30:42,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 153 [2022-10-17 10:30:42,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-10-17 10:30:44,182 INFO L130 PetriNetUnfolder]: 608/1880 cut-off events. [2022-10-17 10:30:44,183 INFO L131 PetriNetUnfolder]: For 2938/3099 co-relation queries the response was YES. [2022-10-17 10:30:44,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4914 conditions, 1880 events. 608/1880 cut-off events. For 2938/3099 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 13495 event pairs, 263 based on Foata normal form. 37/1868 useless extension candidates. Maximal degree in co-relation 4810. Up to 518 conditions per place. [2022-10-17 10:30:44,204 INFO L137 encePairwiseOnDemand]: 138/153 looper letters, 67 selfloop transitions, 36 changer transitions 12/218 dead transitions. [2022-10-17 10:30:44,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 218 transitions, 852 flow [2022-10-17 10:30:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-10-17 10:30:44,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-10-17 10:30:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2831 transitions. [2022-10-17 10:30:44,215 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7709694989106753 [2022-10-17 10:30:44,215 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2831 transitions. [2022-10-17 10:30:44,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2831 transitions. [2022-10-17 10:30:44,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-10-17 10:30:44,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2831 transitions. [2022-10-17 10:30:44,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 117.95833333333333) internal successors, (2831), 24 states have internal predecessors, (2831), 0 states have call successors, (0), 0 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 10:30:44,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 153.0) internal successors, (3825), 25 states have internal predecessors, (3825), 0 states have call successors, (0), 0 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 10:30:44,239 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 153.0) internal successors, (3825), 25 states have internal predecessors, (3825), 0 states have call successors, (0), 0 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 10:30:44,239 INFO L175 Difference]: Start difference. First operand has 162 places, 138 transitions, 436 flow. Second operand 24 states and 2831 transitions. [2022-10-17 10:30:44,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 218 transitions, 852 flow [2022-10-17 10:30:44,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 218 transitions, 783 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-10-17 10:30:44,258 INFO L231 Difference]: Finished difference. Result has 181 places, 172 transitions, 586 flow [2022-10-17 10:30:44,258 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=586, PETRI_PLACES=181, PETRI_TRANSITIONS=172} [2022-10-17 10:30:44,259 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 21 predicate places. [2022-10-17 10:30:44,259 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 172 transitions, 586 flow [2022-10-17 10:30:44,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 115.13333333333334) internal successors, (1727), 15 states have internal predecessors, (1727), 0 states have call successors, (0), 0 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 10:30:44,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-10-17 10:30:44,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:30:44,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:30:44,261 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-10-17 10:30:44,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:30:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1574962323, now seen corresponding path program 2 times [2022-10-17 10:30:44,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:30:44,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038505886] [2022-10-17 10:30:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:30:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:30:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat