./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS --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 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --- 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-4e7fbc6 [2022-11-23 01:56:16,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:56:16,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:56:16,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:56:16,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:56:16,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:56:16,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:56:16,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:56:16,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:56:16,615 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:56:16,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:56:16,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:56:16,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:56:16,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:56:16,628 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:56:16,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:56:16,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:56:16,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:56:16,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:56:16,649 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:56:16,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:56:16,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:56:16,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:56:16,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:56:16,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:56:16,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:56:16,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:56:16,674 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:56:16,676 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:56:16,677 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:56:16,678 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:56:16,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:56:16,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:56:16,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:56:16,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:56:16,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:56:16,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:56:16,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:56:16,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:56:16,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:56:16,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:56:16,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 01:56:16,752 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:56:16,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:56:16,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:56:16,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:56:16,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:56:16,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:56:16,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:56:16,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:56:16,757 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:56:16,758 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:56:16,759 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 01:56:16,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:56:16,760 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 01:56:16,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:56:16,761 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:56:16,761 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:56:16,761 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:56:16,761 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 01:56:16,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:56:16,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:56:16,762 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:56:16,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:56:16,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:56:16,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:56:16,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:56:16,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:56:16,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:56:16,765 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:56:16,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:56:16,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:56:16,766 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:56:16,766 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:56:16,767 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:56:16,767 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:56:16,767 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 [2022-11-23 01:56:17,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:56:17,196 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:56:17,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:56:17,200 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:56:17,201 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:56:17,203 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-11-23 01:56:20,847 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:56:21,129 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:56:21,130 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2022-11-23 01:56:21,138 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/data/54d15f78a/1490ede4009849aa99f3a72c72f27a86/FLAGd9a8a0268 [2022-11-23 01:56:21,155 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/data/54d15f78a/1490ede4009849aa99f3a72c72f27a86 [2022-11-23 01:56:21,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:56:21,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:56:21,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:56:21,162 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:56:21,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:56:21,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@418d7a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21, skipping insertion in model container [2022-11-23 01:56:21,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:56:21,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:56:21,525 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-11-23 01:56:21,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:56:21,549 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:56:21,597 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c[2410,2423] [2022-11-23 01:56:21,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:56:21,624 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:56:21,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21 WrapperNode [2022-11-23 01:56:21,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:56:21,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:56:21,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:56:21,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:56:21,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,692 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-11-23 01:56:21,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:56:21,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:56:21,694 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:56:21,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:56:21,707 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,714 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,749 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:56:21,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:56:21,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:56:21,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:56:21,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (1/1) ... [2022-11-23 01:56:21,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:56:21,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:56:21,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:56:21,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:56:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:56:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 01:56:21,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 01:56:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 01:56:21,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 01:56:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:56:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:56:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 01:56:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-23 01:56:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-23 01:56:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:56:21,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:56:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 01:56:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:56:21,880 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 01:56:22,044 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:56:22,046 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:56:22,422 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:56:22,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:56:22,484 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 01:56:22,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:22 BoogieIcfgContainer [2022-11-23 01:56:22,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:56:22,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:56:22,492 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:56:22,497 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:56:22,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:56:21" (1/3) ... [2022-11-23 01:56:22,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cec0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:22, skipping insertion in model container [2022-11-23 01:56:22,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:56:21" (2/3) ... [2022-11-23 01:56:22,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13cec0fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:56:22, skipping insertion in model container [2022-11-23 01:56:22,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:22" (3/3) ... [2022-11-23 01:56:22,506 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2022-11-23 01:56:22,517 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 01:56:22,531 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:56:22,532 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:56:22,532 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 01:56:22,671 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-23 01:56:22,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 95 transitions, 206 flow [2022-11-23 01:56:22,846 INFO L130 PetriNetUnfolder]: 11/93 cut-off events. [2022-11-23 01:56:22,846 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 01:56:22,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 11/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 91 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-11-23 01:56:22,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 95 transitions, 206 flow [2022-11-23 01:56:22,863 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 84 transitions, 180 flow [2022-11-23 01:56:22,867 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 01:56:22,898 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 84 transitions, 180 flow [2022-11-23 01:56:22,914 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 84 transitions, 180 flow [2022-11-23 01:56:22,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 84 transitions, 180 flow [2022-11-23 01:56:22,971 INFO L130 PetriNetUnfolder]: 11/84 cut-off events. [2022-11-23 01:56:22,972 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 01:56:22,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 11/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 51. Up to 4 conditions per place. [2022-11-23 01:56:22,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 1088 [2022-11-23 01:56:27,569 INFO L134 LiptonReduction]: Checked pairs total: 1005 [2022-11-23 01:56:27,570 INFO L136 LiptonReduction]: Total number of compositions: 86 [2022-11-23 01:56:27,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:56:27,621 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;@1fa78e88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:56:27,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-23 01:56:27,637 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2022-11-23 01:56:27,638 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-23 01:56:27,639 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:27,639 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:27,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:27,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:27,649 INFO L85 PathProgramCache]: Analyzing trace with hash 921559233, now seen corresponding path program 1 times [2022-11-23 01:56:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:27,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855833249] [2022-11-23 01:56:27,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:27,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:27,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:28,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:28,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:28,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855833249] [2022-11-23 01:56:28,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855833249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:56:28,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:56:28,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:56:28,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86579220] [2022-11-23 01:56:28,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:56:28,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:56:28,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:28,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:56:28,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:56:28,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 181 [2022-11-23 01:56:28,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:28,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 181 [2022-11-23 01:56:28,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:28,264 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2022-11-23 01:56:28,265 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-23 01:56:28,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 54 events. 29/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 90. Up to 45 conditions per place. [2022-11-23 01:56:28,288 INFO L137 encePairwiseOnDemand]: 178/181 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2022-11-23 01:56:28,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 91 flow [2022-11-23 01:56:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:56:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:56:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-11-23 01:56:28,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4843462246777164 [2022-11-23 01:56:28,308 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-11-23 01:56:28,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-11-23 01:56:28,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:28,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-11-23 01:56:28,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,325 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,328 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 263 transitions. [2022-11-23 01:56:28,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 91 flow [2022-11-23 01:56:28,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-23 01:56:28,334 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 42 flow [2022-11-23 01:56:28,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2022-11-23 01:56:28,341 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2022-11-23 01:56:28,342 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 42 flow [2022-11-23 01:56:28,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:28,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:28,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:56:28,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:28,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:28,345 INFO L85 PathProgramCache]: Analyzing trace with hash 876057955, now seen corresponding path program 1 times [2022-11-23 01:56:28,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:28,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487467698] [2022-11-23 01:56:28,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:28,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:56:28,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:28,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487467698] [2022-11-23 01:56:28,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487467698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:56:28,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:56:28,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 01:56:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243661298] [2022-11-23 01:56:28,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:56:28,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:56:28,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:28,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:56:28,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:56:28,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 181 [2022-11-23 01:56:28,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:28,514 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 181 [2022-11-23 01:56:28,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:28,587 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2022-11-23 01:56:28,588 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-23 01:56:28,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 73 events. 40/73 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 122. Up to 49 conditions per place. [2022-11-23 01:56:28,590 INFO L137 encePairwiseOnDemand]: 178/181 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2022-11-23 01:56:28,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 21 transitions, 106 flow [2022-11-23 01:56:28,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:56:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-23 01:56:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 263 transitions. [2022-11-23 01:56:28,600 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4843462246777164 [2022-11-23 01:56:28,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 263 transitions. [2022-11-23 01:56:28,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 263 transitions. [2022-11-23 01:56:28,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:28,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 263 transitions. [2022-11-23 01:56:28,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 87.66666666666667) internal successors, (263), 3 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,611 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 42 flow. Second operand 3 states and 263 transitions. [2022-11-23 01:56:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 21 transitions, 106 flow [2022-11-23 01:56:28,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:56:28,613 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 52 flow [2022-11-23 01:56:28,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2022-11-23 01:56:28,614 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2022-11-23 01:56:28,615 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 52 flow [2022-11-23 01:56:28,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:28,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:28,616 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:28,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:56:28,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1350224492, now seen corresponding path program 1 times [2022-11-23 01:56:28,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:28,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189417312] [2022-11-23 01:56:28,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:28,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:56:29,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:29,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189417312] [2022-11-23 01:56:29,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189417312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:56:29,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714753920] [2022-11-23 01:56:29,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:29,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:29,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:56:29,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:56:29,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:56:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:29,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 01:56:29,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:56:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:29,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:56:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:30,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714753920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:56:30,300 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:56:30,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2022-11-23 01:56:30,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031560888] [2022-11-23 01:56:30,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:56:30,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 01:56:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:30,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 01:56:30,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:56:30,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 181 [2022-11-23 01:56:30,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 52 flow. Second operand has 10 states, 10 states have (on average 67.5) internal successors, (675), 10 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:30,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:30,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 181 [2022-11-23 01:56:30,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:30,805 INFO L130 PetriNetUnfolder]: 75/134 cut-off events. [2022-11-23 01:56:30,806 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-11-23 01:56:30,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 134 events. 75/134 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 331 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 109. Up to 53 conditions per place. [2022-11-23 01:56:30,811 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 44 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2022-11-23 01:56:30,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 67 transitions, 349 flow [2022-11-23 01:56:30,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 01:56:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-23 01:56:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1035 transitions. [2022-11-23 01:56:30,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3812154696132597 [2022-11-23 01:56:30,817 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1035 transitions. [2022-11-23 01:56:30,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1035 transitions. [2022-11-23 01:56:30,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:30,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1035 transitions. [2022-11-23 01:56:30,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 69.0) internal successors, (1035), 15 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:30,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 181.0) internal successors, (2896), 16 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:30,831 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 181.0) internal successors, (2896), 16 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:30,832 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 52 flow. Second operand 15 states and 1035 transitions. [2022-11-23 01:56:30,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 67 transitions, 349 flow [2022-11-23 01:56:30,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 67 transitions, 345 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-23 01:56:30,837 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 231 flow [2022-11-23 01:56:30,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=231, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2022-11-23 01:56:30,839 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 20 predicate places. [2022-11-23 01:56:30,839 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 231 flow [2022-11-23 01:56:30,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.5) internal successors, (675), 10 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:30,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:30,841 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:30,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:56:31,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:31,049 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:31,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2022559775, now seen corresponding path program 2 times [2022-11-23 01:56:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:31,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125328827] [2022-11-23 01:56:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:32,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:32,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125328827] [2022-11-23 01:56:32,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125328827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:56:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125865613] [2022-11-23 01:56:32,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 01:56:32,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:32,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:56:32,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:56:32,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 01:56:32,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 01:56:32,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:56:32,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 01:56:32,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:56:33,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:33,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:56:34,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:34,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125865613] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:56:34,149 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:56:34,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-11-23 01:56:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949467081] [2022-11-23 01:56:34,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:56:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 01:56:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 01:56:34,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-11-23 01:56:34,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 181 [2022-11-23 01:56:34,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 231 flow. Second operand has 19 states, 19 states have (on average 60.1578947368421) internal successors, (1143), 19 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:34,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:34,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 181 [2022-11-23 01:56:34,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:37,080 INFO L130 PetriNetUnfolder]: 337/624 cut-off events. [2022-11-23 01:56:37,081 INFO L131 PetriNetUnfolder]: For 1433/1433 co-relation queries the response was YES. [2022-11-23 01:56:37,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 624 events. 337/624 cut-off events. For 1433/1433 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2922 event pairs, 2 based on Foata normal form. 8/596 useless extension candidates. Maximal degree in co-relation 1042. Up to 231 conditions per place. [2022-11-23 01:56:37,092 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 99 selfloop transitions, 112 changer transitions 40/251 dead transitions. [2022-11-23 01:56:37,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 251 transitions, 1985 flow [2022-11-23 01:56:37,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-23 01:56:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-23 01:56:37,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2112 transitions. [2022-11-23 01:56:37,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.35359116022099446 [2022-11-23 01:56:37,135 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2112 transitions. [2022-11-23 01:56:37,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2112 transitions. [2022-11-23 01:56:37,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:37,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2112 transitions. [2022-11-23 01:56:37,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 64.0) internal successors, (2112), 33 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:37,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 181.0) internal successors, (6154), 34 states have internal predecessors, (6154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:37,162 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 181.0) internal successors, (6154), 34 states have internal predecessors, (6154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:37,163 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 231 flow. Second operand 33 states and 2112 transitions. [2022-11-23 01:56:37,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 251 transitions, 1985 flow [2022-11-23 01:56:37,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 251 transitions, 1727 flow, removed 115 selfloop flow, removed 3 redundant places. [2022-11-23 01:56:37,180 INFO L231 Difference]: Finished difference. Result has 73 places, 134 transitions, 1172 flow [2022-11-23 01:56:37,181 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1172, PETRI_PLACES=73, PETRI_TRANSITIONS=134} [2022-11-23 01:56:37,181 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 55 predicate places. [2022-11-23 01:56:37,182 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 134 transitions, 1172 flow [2022-11-23 01:56:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 60.1578947368421) internal successors, (1143), 19 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:37,183 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:37,183 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:37,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 01:56:37,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:37,390 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:37,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:37,391 INFO L85 PathProgramCache]: Analyzing trace with hash 118457693, now seen corresponding path program 3 times [2022-11-23 01:56:37,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:37,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962164113] [2022-11-23 01:56:37,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:37,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:38,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:38,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962164113] [2022-11-23 01:56:38,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962164113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:56:38,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590617815] [2022-11-23 01:56:38,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 01:56:38,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:38,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:56:38,368 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:56:38,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 01:56:38,448 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-23 01:56:38,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:56:38,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 01:56:38,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:56:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:38,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:56:39,644 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:39,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590617815] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:56:39,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:56:39,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2022-11-23 01:56:39,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447516207] [2022-11-23 01:56:39,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:56:39,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 01:56:39,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:39,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 01:56:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-11-23 01:56:39,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 181 [2022-11-23 01:56:39,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 134 transitions, 1172 flow. Second operand has 17 states, 17 states have (on average 61.1764705882353) internal successors, (1040), 17 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:39,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:39,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 181 [2022-11-23 01:56:39,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:42,507 INFO L130 PetriNetUnfolder]: 923/1554 cut-off events. [2022-11-23 01:56:42,507 INFO L131 PetriNetUnfolder]: For 3883/3883 co-relation queries the response was YES. [2022-11-23 01:56:42,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7445 conditions, 1554 events. 923/1554 cut-off events. For 3883/3883 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8070 event pairs, 12 based on Foata normal form. 37/1499 useless extension candidates. Maximal degree in co-relation 7375. Up to 497 conditions per place. [2022-11-23 01:56:42,522 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 132 selfloop transitions, 331 changer transitions 76/539 dead transitions. [2022-11-23 01:56:42,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 539 transitions, 5680 flow [2022-11-23 01:56:42,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-23 01:56:42,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-23 01:56:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2459 transitions. [2022-11-23 01:56:42,531 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3575167199767374 [2022-11-23 01:56:42,531 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2459 transitions. [2022-11-23 01:56:42,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2459 transitions. [2022-11-23 01:56:42,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:42,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2459 transitions. [2022-11-23 01:56:42,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 64.71052631578948) internal successors, (2459), 38 states have internal predecessors, (2459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:42,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 181.0) internal successors, (7059), 39 states have internal predecessors, (7059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:42,552 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 181.0) internal successors, (7059), 39 states have internal predecessors, (7059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:42,552 INFO L175 Difference]: Start difference. First operand has 73 places, 134 transitions, 1172 flow. Second operand 38 states and 2459 transitions. [2022-11-23 01:56:42,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 539 transitions, 5680 flow [2022-11-23 01:56:42,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 539 transitions, 4084 flow, removed 788 selfloop flow, removed 7 redundant places. [2022-11-23 01:56:42,611 INFO L231 Difference]: Finished difference. Result has 114 places, 402 transitions, 3474 flow [2022-11-23 01:56:42,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3474, PETRI_PLACES=114, PETRI_TRANSITIONS=402} [2022-11-23 01:56:42,614 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 96 predicate places. [2022-11-23 01:56:42,615 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 402 transitions, 3474 flow [2022-11-23 01:56:42,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 61.1764705882353) internal successors, (1040), 17 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:42,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:42,616 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:42,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 01:56:42,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:42,823 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:42,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash -599361999, now seen corresponding path program 4 times [2022-11-23 01:56:42,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:42,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596046653] [2022-11-23 01:56:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:42,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:43,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:43,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596046653] [2022-11-23 01:56:43,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596046653] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:56:43,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947973168] [2022-11-23 01:56:43,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 01:56:43,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:43,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:56:43,889 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:56:43,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 01:56:43,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 01:56:43,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:56:43,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 01:56:43,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:56:44,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:44,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:56:45,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:45,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947973168] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:56:45,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:56:45,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2022-11-23 01:56:45,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044794377] [2022-11-23 01:56:45,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:56:45,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 01:56:45,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:45,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 01:56:45,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2022-11-23 01:56:45,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 181 [2022-11-23 01:56:45,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 402 transitions, 3474 flow. Second operand has 19 states, 19 states have (on average 59.89473684210526) internal successors, (1138), 19 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:45,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:45,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 181 [2022-11-23 01:56:45,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:47,382 INFO L130 PetriNetUnfolder]: 1357/2128 cut-off events. [2022-11-23 01:56:47,383 INFO L131 PetriNetUnfolder]: For 2882/2882 co-relation queries the response was YES. [2022-11-23 01:56:47,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10204 conditions, 2128 events. 1357/2128 cut-off events. For 2882/2882 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 10611 event pairs, 30 based on Foata normal form. 7/1997 useless extension candidates. Maximal degree in co-relation 10100. Up to 736 conditions per place. [2022-11-23 01:56:47,409 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 189 selfloop transitions, 600 changer transitions 17/806 dead transitions. [2022-11-23 01:56:47,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 806 transitions, 8363 flow [2022-11-23 01:56:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 01:56:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-23 01:56:47,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1577 transitions. [2022-11-23 01:56:47,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3485082872928177 [2022-11-23 01:56:47,417 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1577 transitions. [2022-11-23 01:56:47,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1577 transitions. [2022-11-23 01:56:47,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:47,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1577 transitions. [2022-11-23 01:56:47,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 63.08) internal successors, (1577), 25 states have internal predecessors, (1577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:47,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 181.0) internal successors, (4706), 26 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:47,431 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 181.0) internal successors, (4706), 26 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:47,431 INFO L175 Difference]: Start difference. First operand has 114 places, 402 transitions, 3474 flow. Second operand 25 states and 1577 transitions. [2022-11-23 01:56:47,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 806 transitions, 8363 flow [2022-11-23 01:56:47,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 806 transitions, 7504 flow, removed 428 selfloop flow, removed 6 redundant places. [2022-11-23 01:56:47,595 INFO L231 Difference]: Finished difference. Result has 139 places, 745 transitions, 7838 flow [2022-11-23 01:56:47,599 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=3085, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=306, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7838, PETRI_PLACES=139, PETRI_TRANSITIONS=745} [2022-11-23 01:56:47,600 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 121 predicate places. [2022-11-23 01:56:47,602 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 745 transitions, 7838 flow [2022-11-23 01:56:47,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 59.89473684210526) internal successors, (1138), 19 states have internal predecessors, (1138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:47,603 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:47,603 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:47,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 01:56:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-23 01:56:47,804 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:47,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:47,804 INFO L85 PathProgramCache]: Analyzing trace with hash -686179429, now seen corresponding path program 5 times [2022-11-23 01:56:47,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:47,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688691909] [2022-11-23 01:56:47,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:47,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:56:48,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:48,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688691909] [2022-11-23 01:56:48,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688691909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:56:48,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197699373] [2022-11-23 01:56:48,384 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-23 01:56:48,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:48,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:56:48,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:56:48,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 01:56:48,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-23 01:56:48,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:56:48,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 01:56:48,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:56:48,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:56:48,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:56:49,085 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 01:56:49,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197699373] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:56:49,085 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:56:49,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2022-11-23 01:56:49,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642780163] [2022-11-23 01:56:49,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:56:49,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 01:56:49,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:49,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 01:56:49,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-11-23 01:56:49,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 181 [2022-11-23 01:56:49,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 745 transitions, 7838 flow. Second operand has 13 states, 13 states have (on average 70.6923076923077) internal successors, (919), 13 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:49,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:49,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 181 [2022-11-23 01:56:49,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:49,829 INFO L130 PetriNetUnfolder]: 1199/1924 cut-off events. [2022-11-23 01:56:49,829 INFO L131 PetriNetUnfolder]: For 3363/3363 co-relation queries the response was YES. [2022-11-23 01:56:49,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10443 conditions, 1924 events. 1199/1924 cut-off events. For 3363/3363 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9738 event pairs, 18 based on Foata normal form. 216/2092 useless extension candidates. Maximal degree in co-relation 10154. Up to 739 conditions per place. [2022-11-23 01:56:49,853 INFO L137 encePairwiseOnDemand]: 177/181 looper letters, 327 selfloop transitions, 344 changer transitions 55/726 dead transitions. [2022-11-23 01:56:49,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 726 transitions, 8727 flow [2022-11-23 01:56:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:56:49,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-23 01:56:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 651 transitions. [2022-11-23 01:56:49,856 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3996316758747698 [2022-11-23 01:56:49,856 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 651 transitions. [2022-11-23 01:56:49,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 651 transitions. [2022-11-23 01:56:49,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:49,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 651 transitions. [2022-11-23 01:56:49,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 72.33333333333333) internal successors, (651), 9 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:49,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:49,861 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 181.0) internal successors, (1810), 10 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:49,861 INFO L175 Difference]: Start difference. First operand has 139 places, 745 transitions, 7838 flow. Second operand 9 states and 651 transitions. [2022-11-23 01:56:49,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 726 transitions, 8727 flow [2022-11-23 01:56:50,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 726 transitions, 8235 flow, removed 108 selfloop flow, removed 12 redundant places. [2022-11-23 01:56:50,019 INFO L231 Difference]: Finished difference. Result has 132 places, 639 transitions, 6710 flow [2022-11-23 01:56:50,020 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=6309, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6710, PETRI_PLACES=132, PETRI_TRANSITIONS=639} [2022-11-23 01:56:50,021 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 114 predicate places. [2022-11-23 01:56:50,021 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 639 transitions, 6710 flow [2022-11-23 01:56:50,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.6923076923077) internal successors, (919), 13 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:50,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:50,022 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:50,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 01:56:50,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:50,228 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1053938738, now seen corresponding path program 6 times [2022-11-23 01:56:50,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:50,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925560537] [2022-11-23 01:56:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:50,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:50,645 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:50,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925560537] [2022-11-23 01:56:50,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925560537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:56:50,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302199062] [2022-11-23 01:56:50,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-23 01:56:50,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:50,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:56:50,650 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:56:50,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 01:56:50,757 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-23 01:56:50,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:56:50,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 01:56:50,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:56:51,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:51,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:56:51,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:51,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302199062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:56:51,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:56:51,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 18 [2022-11-23 01:56:51,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489985719] [2022-11-23 01:56:51,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:56:51,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 01:56:51,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:51,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 01:56:51,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-11-23 01:56:51,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 181 [2022-11-23 01:56:51,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 639 transitions, 6710 flow. Second operand has 19 states, 19 states have (on average 63.05263157894737) internal successors, (1198), 19 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:51,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:51,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 181 [2022-11-23 01:56:51,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:53,367 INFO L130 PetriNetUnfolder]: 1242/2025 cut-off events. [2022-11-23 01:56:53,367 INFO L131 PetriNetUnfolder]: For 3680/3680 co-relation queries the response was YES. [2022-11-23 01:56:53,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10696 conditions, 2025 events. 1242/2025 cut-off events. For 3680/3680 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10545 event pairs, 10 based on Foata normal form. 196/2221 useless extension candidates. Maximal degree in co-relation 10330. Up to 527 conditions per place. [2022-11-23 01:56:53,390 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 237 selfloop transitions, 508 changer transitions 18/763 dead transitions. [2022-11-23 01:56:53,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 763 transitions, 8993 flow [2022-11-23 01:56:53,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 01:56:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-23 01:56:53,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1697 transitions. [2022-11-23 01:56:53,395 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3606034849128772 [2022-11-23 01:56:53,395 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1697 transitions. [2022-11-23 01:56:53,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1697 transitions. [2022-11-23 01:56:53,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:53,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1697 transitions. [2022-11-23 01:56:53,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 65.26923076923077) internal successors, (1697), 26 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:53,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 181.0) internal successors, (4887), 27 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:53,414 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 181.0) internal successors, (4887), 27 states have internal predecessors, (4887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:53,414 INFO L175 Difference]: Start difference. First operand has 132 places, 639 transitions, 6710 flow. Second operand 26 states and 1697 transitions. [2022-11-23 01:56:53,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 763 transitions, 8993 flow [2022-11-23 01:56:53,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 763 transitions, 8637 flow, removed 24 selfloop flow, removed 7 redundant places. [2022-11-23 01:56:53,558 INFO L231 Difference]: Finished difference. Result has 157 places, 674 transitions, 8352 flow [2022-11-23 01:56:53,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=5122, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=348, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8352, PETRI_PLACES=157, PETRI_TRANSITIONS=674} [2022-11-23 01:56:53,561 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 139 predicate places. [2022-11-23 01:56:53,561 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 674 transitions, 8352 flow [2022-11-23 01:56:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 63.05263157894737) internal successors, (1198), 19 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:53,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:53,562 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:53,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 01:56:53,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 01:56:53,769 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:53,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:53,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1810163137, now seen corresponding path program 7 times [2022-11-23 01:56:53,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:53,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563739783] [2022-11-23 01:56:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:53,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:55,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:56:55,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563739783] [2022-11-23 01:56:55,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563739783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:56:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106439922] [2022-11-23 01:56:55,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 01:56:55,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:56:55,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:56:55,062 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:56:55,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 01:56:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:56:55,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 01:56:55,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:56:55,654 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:56:55,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:56:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:56:56,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106439922] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:56:56,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:56:56,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 20 [2022-11-23 01:56:56,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977814754] [2022-11-23 01:56:56,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:56:56,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-23 01:56:56,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:56:56,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-23 01:56:56,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-11-23 01:56:56,626 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 181 [2022-11-23 01:56:56,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 674 transitions, 8352 flow. Second operand has 22 states, 22 states have (on average 59.90909090909091) internal successors, (1318), 22 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:56,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:56:56,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 181 [2022-11-23 01:56:56,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:56:58,569 INFO L130 PetriNetUnfolder]: 1630/2614 cut-off events. [2022-11-23 01:56:58,569 INFO L131 PetriNetUnfolder]: For 6534/6534 co-relation queries the response was YES. [2022-11-23 01:56:58,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15864 conditions, 2614 events. 1630/2614 cut-off events. For 6534/6534 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 13896 event pairs, 8 based on Foata normal form. 2/2616 useless extension candidates. Maximal degree in co-relation 15613. Up to 803 conditions per place. [2022-11-23 01:56:58,599 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 331 selfloop transitions, 626 changer transitions 11/968 dead transitions. [2022-11-23 01:56:58,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 968 transitions, 13526 flow [2022-11-23 01:56:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 01:56:58,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-23 01:56:58,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1379 transitions. [2022-11-23 01:56:58,603 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34630838774485184 [2022-11-23 01:56:58,603 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1379 transitions. [2022-11-23 01:56:58,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1379 transitions. [2022-11-23 01:56:58,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:56:58,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1379 transitions. [2022-11-23 01:56:58,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 62.68181818181818) internal successors, (1379), 22 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:58,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 181.0) internal successors, (4163), 23 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:58,613 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 181.0) internal successors, (4163), 23 states have internal predecessors, (4163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:58,614 INFO L175 Difference]: Start difference. First operand has 157 places, 674 transitions, 8352 flow. Second operand 22 states and 1379 transitions. [2022-11-23 01:56:58,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 968 transitions, 13526 flow [2022-11-23 01:56:58,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 968 transitions, 13316 flow, removed 93 selfloop flow, removed 6 redundant places. [2022-11-23 01:56:58,908 INFO L231 Difference]: Finished difference. Result has 185 places, 919 transitions, 13496 flow [2022-11-23 01:56:58,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=8196, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=422, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=13496, PETRI_PLACES=185, PETRI_TRANSITIONS=919} [2022-11-23 01:56:58,909 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 167 predicate places. [2022-11-23 01:56:58,909 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 919 transitions, 13496 flow [2022-11-23 01:56:58,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 59.90909090909091) internal successors, (1318), 22 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:56:58,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:56:58,910 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:56:58,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-23 01:56:59,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 01:56:59,114 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:56:59,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:56:59,114 INFO L85 PathProgramCache]: Analyzing trace with hash 156866333, now seen corresponding path program 8 times [2022-11-23 01:56:59,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:56:59,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650183596] [2022-11-23 01:56:59,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:56:59,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:56:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 01:57:00,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:00,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650183596] [2022-11-23 01:57:00,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650183596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:57:00,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551370150] [2022-11-23 01:57:00,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-23 01:57:00,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:57:00,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:57:00,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:57:00,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 01:57:00,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-23 01:57:00,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:57:00,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-23 01:57:00,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:57:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:00,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:57:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:01,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551370150] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:57:01,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:57:01,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 21 [2022-11-23 01:57:01,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959395293] [2022-11-23 01:57:01,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:57:01,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 01:57:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 01:57:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-23 01:57:01,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 181 [2022-11-23 01:57:01,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 919 transitions, 13496 flow. Second operand has 23 states, 23 states have (on average 59.869565217391305) internal successors, (1377), 23 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:01,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:57:01,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 181 [2022-11-23 01:57:01,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:57:04,481 INFO L130 PetriNetUnfolder]: 2062/3272 cut-off events. [2022-11-23 01:57:04,481 INFO L131 PetriNetUnfolder]: For 11743/11743 co-relation queries the response was YES. [2022-11-23 01:57:04,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22854 conditions, 3272 events. 2062/3272 cut-off events. For 11743/11743 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 17895 event pairs, 10 based on Foata normal form. 5/3277 useless extension candidates. Maximal degree in co-relation 22558. Up to 1153 conditions per place. [2022-11-23 01:57:04,522 INFO L137 encePairwiseOnDemand]: 175/181 looper letters, 399 selfloop transitions, 768 changer transitions 58/1225 dead transitions. [2022-11-23 01:57:04,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1225 transitions, 19718 flow [2022-11-23 01:57:04,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-23 01:57:04,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-23 01:57:04,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1557 transitions. [2022-11-23 01:57:04,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34408839779005523 [2022-11-23 01:57:04,526 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1557 transitions. [2022-11-23 01:57:04,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1557 transitions. [2022-11-23 01:57:04,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:57:04,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1557 transitions. [2022-11-23 01:57:04,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 62.28) internal successors, (1557), 25 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:04,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 181.0) internal successors, (4706), 26 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:04,537 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 181.0) internal successors, (4706), 26 states have internal predecessors, (4706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:04,537 INFO L175 Difference]: Start difference. First operand has 185 places, 919 transitions, 13496 flow. Second operand 25 states and 1557 transitions. [2022-11-23 01:57:04,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1225 transitions, 19718 flow [2022-11-23 01:57:05,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 1225 transitions, 19108 flow, removed 66 selfloop flow, removed 7 redundant places. [2022-11-23 01:57:05,018 INFO L231 Difference]: Finished difference. Result has 211 places, 1114 transitions, 18128 flow [2022-11-23 01:57:05,019 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=13014, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=550, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=18128, PETRI_PLACES=211, PETRI_TRANSITIONS=1114} [2022-11-23 01:57:05,019 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 193 predicate places. [2022-11-23 01:57:05,019 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 1114 transitions, 18128 flow [2022-11-23 01:57:05,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.869565217391305) internal successors, (1377), 23 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:05,020 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-23 01:57:05,020 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:05,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 01:57:05,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:57:05,228 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-23 01:57:05,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:05,228 INFO L85 PathProgramCache]: Analyzing trace with hash 873863201, now seen corresponding path program 9 times [2022-11-23 01:57:05,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:05,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80863234] [2022-11-23 01:57:05,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:05,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:06,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:57:06,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80863234] [2022-11-23 01:57:06,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80863234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:57:06,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517587821] [2022-11-23 01:57:06,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 01:57:06,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:57:06,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:57:06,323 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:57:06,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 01:57:06,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-23 01:57:06,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 01:57:06,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 01:57:06,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:57:06,994 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:06,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:57:08,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:57:08,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517587821] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 01:57:08,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 01:57:08,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 21 [2022-11-23 01:57:08,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556970579] [2022-11-23 01:57:08,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 01:57:08,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 01:57:08,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:57:08,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 01:57:08,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2022-11-23 01:57:08,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 181 [2022-11-23 01:57:08,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 1114 transitions, 18128 flow. Second operand has 23 states, 23 states have (on average 59.869565217391305) internal successors, (1377), 23 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:08,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-23 01:57:08,318 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 181 [2022-11-23 01:57:08,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-23 01:57:09,922 INFO L130 PetriNetUnfolder]: 1979/3095 cut-off events. [2022-11-23 01:57:09,922 INFO L131 PetriNetUnfolder]: For 12927/12927 co-relation queries the response was YES. [2022-11-23 01:57:09,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24058 conditions, 3095 events. 1979/3095 cut-off events. For 12927/12927 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 16332 event pairs, 8 based on Foata normal form. 5/3100 useless extension candidates. Maximal degree in co-relation 23786. Up to 1153 conditions per place. [2022-11-23 01:57:09,953 INFO L137 encePairwiseOnDemand]: 176/181 looper letters, 0 selfloop transitions, 0 changer transitions 1180/1180 dead transitions. [2022-11-23 01:57:09,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 1180 transitions, 21140 flow [2022-11-23 01:57:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 01:57:09,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-23 01:57:09,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 804 transitions. [2022-11-23 01:57:09,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.34169145771355713 [2022-11-23 01:57:09,956 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 804 transitions. [2022-11-23 01:57:09,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 804 transitions. [2022-11-23 01:57:09,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-23 01:57:09,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 804 transitions. [2022-11-23 01:57:09,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 61.84615384615385) internal successors, (804), 13 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:09,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 181.0) internal successors, (2534), 14 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:09,963 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 181.0) internal successors, (2534), 14 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:09,963 INFO L175 Difference]: Start difference. First operand has 211 places, 1114 transitions, 18128 flow. Second operand 13 states and 804 transitions. [2022-11-23 01:57:09,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 1180 transitions, 21140 flow [2022-11-23 01:57:10,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 1180 transitions, 20228 flow, removed 100 selfloop flow, removed 9 redundant places. [2022-11-23 01:57:10,396 INFO L231 Difference]: Finished difference. Result has 206 places, 0 transitions, 0 flow [2022-11-23 01:57:10,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=17236, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=0, PETRI_PLACES=206, PETRI_TRANSITIONS=0} [2022-11-23 01:57:10,397 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 188 predicate places. [2022-11-23 01:57:10,397 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 0 transitions, 0 flow [2022-11-23 01:57:10,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 59.869565217391305) internal successors, (1377), 23 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:57:10,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-23 01:57:10,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-23 01:57:10,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-23 01:57:10,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-23 01:57:10,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-23 01:57:10,607 INFO L444 BasicCegarLoop]: Path program histogram: [9, 1, 1] [2022-11-23 01:57:10,610 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-23 01:57:10,610 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 01:57:10,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:57:10 BasicIcfg [2022-11-23 01:57:10,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 01:57:10,616 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 01:57:10,616 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 01:57:10,616 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 01:57:10,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:56:22" (3/4) ... [2022-11-23 01:57:10,620 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 01:57:10,626 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-23 01:57:10,626 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-23 01:57:10,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-23 01:57:10,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-23 01:57:10,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 01:57:10,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 01:57:10,671 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 01:57:10,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 01:57:10,672 INFO L158 Benchmark]: Toolchain (without parser) took 49512.61ms. Allocated memory was 138.4MB in the beginning and 589.3MB in the end (delta: 450.9MB). Free memory was 75.4MB in the beginning and 272.1MB in the end (delta: -196.7MB). Peak memory consumption was 255.3MB. Max. memory is 16.1GB. [2022-11-23 01:57:10,672 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:57:10,673 INFO L158 Benchmark]: CACSL2BoogieTranslator took 464.94ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 75.1MB in the beginning and 159.0MB in the end (delta: -83.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2022-11-23 01:57:10,673 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.38ms. Allocated memory is still 195.0MB. Free memory was 159.0MB in the beginning and 157.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:57:10,674 INFO L158 Benchmark]: Boogie Preprocessor took 65.78ms. Allocated memory is still 195.0MB. Free memory was 157.6MB in the beginning and 156.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 01:57:10,674 INFO L158 Benchmark]: RCFGBuilder took 726.96ms. Allocated memory is still 195.0MB. Free memory was 156.3MB in the beginning and 142.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-23 01:57:10,675 INFO L158 Benchmark]: TraceAbstraction took 48124.02ms. Allocated memory was 195.0MB in the beginning and 589.3MB in the end (delta: 394.3MB). Free memory was 141.7MB in the beginning and 275.3MB in the end (delta: -133.6MB). Peak memory consumption was 363.6MB. Max. memory is 16.1GB. [2022-11-23 01:57:10,675 INFO L158 Benchmark]: Witness Printer took 55.80ms. Allocated memory is still 589.3MB. Free memory was 274.2MB in the beginning and 272.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 01:57:10,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 138.4MB. Free memory is still 107.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 464.94ms. Allocated memory was 138.4MB in the beginning and 195.0MB in the end (delta: 56.6MB). Free memory was 75.1MB in the beginning and 159.0MB in the end (delta: -83.9MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.38ms. Allocated memory is still 195.0MB. Free memory was 159.0MB in the beginning and 157.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.78ms. Allocated memory is still 195.0MB. Free memory was 157.6MB in the beginning and 156.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 726.96ms. Allocated memory is still 195.0MB. Free memory was 156.3MB in the beginning and 142.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 48124.02ms. Allocated memory was 195.0MB in the beginning and 589.3MB in the end (delta: 394.3MB). Free memory was 141.7MB in the beginning and 275.3MB in the end (delta: -133.6MB). Peak memory consumption was 363.6MB. Max. memory is 16.1GB. * Witness Printer took 55.80ms. Allocated memory is still 589.3MB. Free memory was 274.2MB in the beginning and 272.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.7s, 80 PlacesBefore, 18 PlacesAfterwards, 84 TransitionsBefore, 13 TransitionsAfterwards, 1088 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 86 TotalNumberOfCompositions, 1005 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1005, independent: 1005, independent conditional: 0, independent unconditional: 1005, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 704, independent: 704, independent conditional: 0, independent unconditional: 704, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 704, independent: 698, independent conditional: 0, independent unconditional: 698, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 6, independent: 6, independent conditional: 0, independent unconditional: 6, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 59, independent: 59, independent conditional: 0, independent unconditional: 59, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1005, independent: 301, independent conditional: 0, independent unconditional: 301, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 704, unknown conditional: 0, unknown unconditional: 704] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 113 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 47.9s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 20.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1855 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1779 mSDsluCounter, 550 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 542 mSDsCounter, 741 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4396 IncrementalHoareTripleChecker+Invalid, 5137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 741 mSolverCounterUnsat, 8 mSDtfsCounter, 4396 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 464 GetRequests, 158 SyntacticMatches, 17 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3090 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18128occurred in iteration=10, InterpolantAutomatonStates: 212, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 305 NumberOfCodeBlocks, 305 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 417 ConstructedInterpolants, 0 QuantifiedInterpolants, 6087 SizeOfPredicates, 86 NumberOfNonLiveVariables, 1032 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 29 InterpolantComputations, 2 PerfectInterpolantSequences, 18/232 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-23 01:57:10,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89da2f88-5eac-4b85-8f37-60c1a3f1e8e5/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE