./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R --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 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 --- 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-38b53e6 [2022-11-25 17:45:54,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:45:54,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:45:54,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:45:54,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:45:54,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:45:54,713 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:45:54,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:45:54,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:45:54,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:45:54,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:45:54,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:45:54,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:45:54,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:45:54,741 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:45:54,744 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:45:54,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:45:54,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:45:54,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:45:54,760 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:45:54,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:45:54,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:45:54,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:45:54,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:45:54,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:45:54,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:45:54,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:45:54,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:45:54,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:45:54,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:45:54,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:45:54,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:45:54,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:45:54,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:45:54,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:45:54,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:45:54,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:45:54,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:45:54,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:45:54,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:45:54,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:45:54,801 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:45:54,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:45:54,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:45:54,846 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:45:54,847 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:45:54,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:45:54,848 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:45:54,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:45:54,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:45:54,850 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:45:54,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:45:54,851 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:45:54,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:45:54,852 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:45:54,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:45:54,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:45:54,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:45:54,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:45:54,853 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:45:54,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:45:54,854 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:45:54,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:45:54,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:45:54,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:45:54,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:45:54,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:45:54,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:45:54,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:45:54,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:45:54,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:45:54,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:45:54,856 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:45:54,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:45:54,857 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:45:54,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:45:54,858 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_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 874fb84f685baf0441a9bf8db1864605baa10908128545fe3028b9b499246108 [2022-11-25 17:45:55,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:45:55,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:45:55,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:45:55,275 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:45:55,275 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:45:55,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-25 17:45:58,874 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:45:59,160 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:45:59,161 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/sv-benchmarks/c/pthread/triangular-longest-2.i [2022-11-25 17:45:59,177 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/data/007321a4b/b5ee9cb473ab4f578315f9045385c9c6/FLAG8edf76bd6 [2022-11-25 17:45:59,195 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/data/007321a4b/b5ee9cb473ab4f578315f9045385c9c6 [2022-11-25 17:45:59,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:45:59,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:45:59,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:45:59,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:45:59,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:45:59,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274e9acb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59, skipping insertion in model container [2022-11-25 17:45:59,210 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:45:59,293 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:45:59,669 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:59,670 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:59,675 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:59,677 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:59,692 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:59,695 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:59,696 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:59,696 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:59,697 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_372bd077-04ee-48eb-82c3-2e8ad19570d8/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-25 17:45:59,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:45:59,715 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:45:59,788 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:59,790 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:59,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:59,792 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:59,796 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:59,797 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:59,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-11-25 17:45:59,798 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-11-25 17:45:59,799 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_372bd077-04ee-48eb-82c3-2e8ad19570d8/sv-benchmarks/c/pthread/triangular-longest-2.i[30964,30977] [2022-11-25 17:45:59,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:45:59,850 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:45:59,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59 WrapperNode [2022-11-25 17:45:59,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:45:59,853 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:45:59,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:45:59,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:45:59,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,939 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-11-25 17:45:59,940 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:45:59,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:45:59,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:45:59,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:45:59,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:45:59,995 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:46:00,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:46:00,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:46:00,013 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:46:00,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:46:00,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:46:00,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (1/1) ... [2022-11-25 17:46:00,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:46:00,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:00,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:46:00,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:46:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-25 17:46:00,122 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-25 17:46:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-25 17:46:00,122 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-25 17:46:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:46:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-25 17:46:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:46:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:46:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:46:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:46:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-25 17:46:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:46:00,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:46:00,127 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 17:46:00,388 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:46:00,391 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:46:00,609 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:46:00,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:46:00,617 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 17:46:00,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:46:00 BoogieIcfgContainer [2022-11-25 17:46:00,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:46:00,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:46:00,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:46:00,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:46:00,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:45:59" (1/3) ... [2022-11-25 17:46:00,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235a6932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:46:00, skipping insertion in model container [2022-11-25 17:46:00,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:45:59" (2/3) ... [2022-11-25 17:46:00,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235a6932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:46:00, skipping insertion in model container [2022-11-25 17:46:00,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:46:00" (3/3) ... [2022-11-25 17:46:00,639 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2022-11-25 17:46:00,652 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:46:00,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:46:00,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:46:00,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:46:00,775 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-25 17:46:00,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 150 flow [2022-11-25 17:46:00,940 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-25 17:46:00,946 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:46:00,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-25 17:46:00,968 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 150 flow [2022-11-25 17:46:00,976 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 68 transitions, 142 flow [2022-11-25 17:46:00,981 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:46:01,048 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 70 places, 68 transitions, 142 flow [2022-11-25 17:46:01,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 70 places, 68 transitions, 142 flow [2022-11-25 17:46:01,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 70 places, 68 transitions, 142 flow [2022-11-25 17:46:01,075 INFO L130 PetriNetUnfolder]: 5/68 cut-off events. [2022-11-25 17:46:01,075 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:46:01,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 68 events. 5/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2022-11-25 17:46:01,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 1122 [2022-11-25 17:46:04,238 INFO L134 LiptonReduction]: Checked pairs total: 1024 [2022-11-25 17:46:04,239 INFO L136 LiptonReduction]: Total number of compositions: 63 [2022-11-25 17:46:04,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:46:04,265 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;@73a1aea7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:46:04,265 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-25 17:46:04,271 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2022-11-25 17:46:04,272 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:46:04,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:04,273 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:46:04,273 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:04,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:04,280 INFO L85 PathProgramCache]: Analyzing trace with hash -425316771, now seen corresponding path program 1 times [2022-11-25 17:46:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:04,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275658057] [2022-11-25 17:46:04,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:04,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:04,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:04,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275658057] [2022-11-25 17:46:04,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275658057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:04,811 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:04,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:46:04,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359361909] [2022-11-25 17:46:04,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:04,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:46:04,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:46:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:46:04,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-11-25 17:46:04,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:04,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:04,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-11-25 17:46:04,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:05,091 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2022-11-25 17:46:05,095 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-25 17:46:05,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 388 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2022-11-25 17:46:05,101 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2022-11-25 17:46:05,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2022-11-25 17:46:05,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:46:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:46:05,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 261 transitions. [2022-11-25 17:46:05,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4906015037593985 [2022-11-25 17:46:05,132 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 261 transitions. [2022-11-25 17:46:05,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 261 transitions. [2022-11-25 17:46:05,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:05,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 261 transitions. [2022-11-25 17:46:05,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 65.25) internal successors, (261), 4 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,160 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,166 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 261 transitions. [2022-11-25 17:46:05,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2022-11-25 17:46:05,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:46:05,172 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2022-11-25 17:46:05,176 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2022-11-25 17:46:05,181 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2022-11-25 17:46:05,182 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2022-11-25 17:46:05,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,184 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:05,192 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:05,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:46:05,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:05,202 INFO L85 PathProgramCache]: Analyzing trace with hash -707855405, now seen corresponding path program 1 times [2022-11-25 17:46:05,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:05,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910473943] [2022-11-25 17:46:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:05,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:05,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:05,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:05,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910473943] [2022-11-25 17:46:05,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910473943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:05,447 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:05,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:46:05,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613697828] [2022-11-25 17:46:05,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:05,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:05,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:05,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:05,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:05,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:05,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:05,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:05,636 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2022-11-25 17:46:05,636 INFO L131 PetriNetUnfolder]: For 71/71 co-relation queries the response was YES. [2022-11-25 17:46:05,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 659 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2022-11-25 17:46:05,639 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2022-11-25 17:46:05,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2022-11-25 17:46:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:46:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:46:05,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 380 transitions. [2022-11-25 17:46:05,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2022-11-25 17:46:05,642 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 380 transitions. [2022-11-25 17:46:05,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 380 transitions. [2022-11-25 17:46:05,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:05,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 380 transitions. [2022-11-25 17:46:05,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.333333333333336) internal successors, (380), 6 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,648 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,648 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 380 transitions. [2022-11-25 17:46:05,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2022-11-25 17:46:05,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-25 17:46:05,651 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2022-11-25 17:46:05,651 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2022-11-25 17:46:05,652 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2022-11-25 17:46:05,652 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2022-11-25 17:46:05,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,653 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:05,653 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:05,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:46:05,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:05,655 INFO L85 PathProgramCache]: Analyzing trace with hash -707835875, now seen corresponding path program 2 times [2022-11-25 17:46:05,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:05,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132142816] [2022-11-25 17:46:05,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:05,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:05,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:05,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132142816] [2022-11-25 17:46:05,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132142816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:05,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:05,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 17:46:05,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476469747] [2022-11-25 17:46:05,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:05,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:46:05,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:05,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:46:05,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:46:05,903 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:05,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:05,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:05,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:05,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:06,023 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2022-11-25 17:46:06,024 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2022-11-25 17:46:06,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 635 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2022-11-25 17:46:06,033 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2022-11-25 17:46:06,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2022-11-25 17:46:06,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:46:06,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:46:06,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2022-11-25 17:46:06,036 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4781954887218045 [2022-11-25 17:46:06,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 318 transitions. [2022-11-25 17:46:06,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 318 transitions. [2022-11-25 17:46:06,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:06,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 318 transitions. [2022-11-25 17:46:06,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 63.6) internal successors, (318), 5 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,044 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,044 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 318 transitions. [2022-11-25 17:46:06,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2022-11-25 17:46:06,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-25 17:46:06,054 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2022-11-25 17:46:06,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2022-11-25 17:46:06,056 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2022-11-25 17:46:06,057 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2022-11-25 17:46:06,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:06,058 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:06,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:46:06,059 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:06,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1979304464, now seen corresponding path program 1 times [2022-11-25 17:46:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:06,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257311998] [2022-11-25 17:46:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:06,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:06,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:06,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:06,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257311998] [2022-11-25 17:46:06,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257311998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:06,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:06,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459013572] [2022-11-25 17:46:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:46:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:46:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:46:06,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:06,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:06,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:06,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:06,436 INFO L130 PetriNetUnfolder]: 136/239 cut-off events. [2022-11-25 17:46:06,437 INFO L131 PetriNetUnfolder]: For 567/567 co-relation queries the response was YES. [2022-11-25 17:46:06,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 239 events. 136/239 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 803 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 842. Up to 101 conditions per place. [2022-11-25 17:46:06,440 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2022-11-25 17:46:06,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 419 flow [2022-11-25 17:46:06,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:46:06,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:46:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 440 transitions. [2022-11-25 17:46:06,443 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47261009667024706 [2022-11-25 17:46:06,443 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 440 transitions. [2022-11-25 17:46:06,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 440 transitions. [2022-11-25 17:46:06,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:06,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 440 transitions. [2022-11-25 17:46:06,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.857142857142854) internal successors, (440), 7 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,450 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,450 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 7 states and 440 transitions. [2022-11-25 17:46:06,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 419 flow [2022-11-25 17:46:06,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 379 flow, removed 9 selfloop flow, removed 4 redundant places. [2022-11-25 17:46:06,457 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 269 flow [2022-11-25 17:46:06,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2022-11-25 17:46:06,458 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 22 predicate places. [2022-11-25 17:46:06,458 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 269 flow [2022-11-25 17:46:06,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:06,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:06,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:46:06,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:06,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:06,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1979266334, now seen corresponding path program 2 times [2022-11-25 17:46:06,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:06,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340801053] [2022-11-25 17:46:06,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:06,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:06,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:06,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:06,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:06,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340801053] [2022-11-25 17:46:06,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340801053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:06,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:06,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:06,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168844338] [2022-11-25 17:46:06,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:06,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:46:06,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:06,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:46:06,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:46:06,666 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:06,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:06,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:06,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:06,850 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2022-11-25 17:46:06,850 INFO L131 PetriNetUnfolder]: For 782/782 co-relation queries the response was YES. [2022-11-25 17:46:06,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 303 events. 172/303 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1055 event pairs, 22 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2022-11-25 17:46:06,854 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2022-11-25 17:46:06,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 519 flow [2022-11-25 17:46:06,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 17:46:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-25 17:46:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 502 transitions. [2022-11-25 17:46:06,858 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4718045112781955 [2022-11-25 17:46:06,858 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 502 transitions. [2022-11-25 17:46:06,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 502 transitions. [2022-11-25 17:46:06,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:06,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 502 transitions. [2022-11-25 17:46:06,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 62.75) internal successors, (502), 8 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,864 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 133.0) internal successors, (1197), 9 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,864 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 269 flow. Second operand 8 states and 502 transitions. [2022-11-25 17:46:06,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 519 flow [2022-11-25 17:46:06,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 495 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-11-25 17:46:06,873 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 375 flow [2022-11-25 17:46:06,873 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2022-11-25 17:46:06,877 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 32 predicate places. [2022-11-25 17:46:06,877 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 375 flow [2022-11-25 17:46:06,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:06,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:06,878 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:06,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:46:06,879 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash -425050334, now seen corresponding path program 3 times [2022-11-25 17:46:06,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:06,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340330071] [2022-11-25 17:46:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:06,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:07,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:07,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:07,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340330071] [2022-11-25 17:46:07,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340330071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:46:07,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:46:07,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 17:46:07,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20011350] [2022-11-25 17:46:07,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:46:07,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:46:07,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:07,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:46:07,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:46:07,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:07,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:07,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:07,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:07,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:07,327 INFO L130 PetriNetUnfolder]: 160/283 cut-off events. [2022-11-25 17:46:07,328 INFO L131 PetriNetUnfolder]: For 1347/1347 co-relation queries the response was YES. [2022-11-25 17:46:07,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 283 events. 160/283 cut-off events. For 1347/1347 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 988 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1237. Up to 69 conditions per place. [2022-11-25 17:46:07,331 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2022-11-25 17:46:07,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 601 flow [2022-11-25 17:46:07,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:46:07,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 17:46:07,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 439 transitions. [2022-11-25 17:46:07,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4715359828141783 [2022-11-25 17:46:07,334 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 439 transitions. [2022-11-25 17:46:07,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 439 transitions. [2022-11-25 17:46:07,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:07,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 439 transitions. [2022-11-25 17:46:07,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.714285714285715) internal successors, (439), 7 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:07,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:07,339 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:07,339 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 375 flow. Second operand 7 states and 439 transitions. [2022-11-25 17:46:07,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 601 flow [2022-11-25 17:46:07,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 567 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-25 17:46:07,350 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 427 flow [2022-11-25 17:46:07,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2022-11-25 17:46:07,351 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 37 predicate places. [2022-11-25 17:46:07,351 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 427 flow [2022-11-25 17:46:07,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 58.666666666666664) internal successors, (352), 6 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:07,352 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:07,352 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:07,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:46:07,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:07,353 INFO L85 PathProgramCache]: Analyzing trace with hash -291636505, now seen corresponding path program 4 times [2022-11-25 17:46:07,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:07,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611649809] [2022-11-25 17:46:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:07,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:07,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:07,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:07,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611649809] [2022-11-25 17:46:07,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611649809] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:07,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745534962] [2022-11-25 17:46:07,528 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:46:07,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:07,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:07,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:07,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:46:07,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:46:07,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 17:46:07,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:07,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:07,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:08,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:08,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745534962] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:08,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:08,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-25 17:46:08,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784959230] [2022-11-25 17:46:08,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:08,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:46:08,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:08,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:46:08,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:46:08,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:08,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 427 flow. Second operand has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:08,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:08,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:08,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:08,512 INFO L130 PetriNetUnfolder]: 208/363 cut-off events. [2022-11-25 17:46:08,513 INFO L131 PetriNetUnfolder]: For 2340/2340 co-relation queries the response was YES. [2022-11-25 17:46:08,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 363 events. 208/363 cut-off events. For 2340/2340 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1277 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1713. Up to 90 conditions per place. [2022-11-25 17:46:08,517 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2022-11-25 17:46:08,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 989 flow [2022-11-25 17:46:08,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:46:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-25 17:46:08,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 872 transitions. [2022-11-25 17:46:08,521 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4683136412459721 [2022-11-25 17:46:08,522 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 872 transitions. [2022-11-25 17:46:08,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 872 transitions. [2022-11-25 17:46:08,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:08,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 872 transitions. [2022-11-25 17:46:08,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 62.285714285714285) internal successors, (872), 14 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:08,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 133.0) internal successors, (1995), 15 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:08,531 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 133.0) internal successors, (1995), 15 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:08,531 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 427 flow. Second operand 14 states and 872 transitions. [2022-11-25 17:46:08,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 989 flow [2022-11-25 17:46:08,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 93 transitions, 927 flow, removed 14 selfloop flow, removed 5 redundant places. [2022-11-25 17:46:08,546 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 735 flow [2022-11-25 17:46:08,546 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=735, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2022-11-25 17:46:08,547 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 50 predicate places. [2022-11-25 17:46:08,547 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 735 flow [2022-11-25 17:46:08,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 58.916666666666664) internal successors, (707), 12 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:08,548 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:08,548 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:08,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:08,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:46:08,756 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1208167982, now seen corresponding path program 5 times [2022-11-25 17:46:08,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:08,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433100954] [2022-11-25 17:46:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:08,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:08,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:08,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433100954] [2022-11-25 17:46:08,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433100954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:08,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107206612] [2022-11-25 17:46:08,989 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:46:08,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:08,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:08,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:09,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:46:09,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-25 17:46:09,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:09,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:46:09,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:09,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:09,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:09,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107206612] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:09,503 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:09,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-25 17:46:09,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922572011] [2022-11-25 17:46:09,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:09,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-25 17:46:09,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-25 17:46:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:46:09,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:09,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 735 flow. Second operand has 16 states, 16 states have (on average 58.75) internal successors, (940), 16 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:09,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:09,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:09,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:10,073 INFO L130 PetriNetUnfolder]: 264/475 cut-off events. [2022-11-25 17:46:10,074 INFO L131 PetriNetUnfolder]: For 4861/4861 co-relation queries the response was YES. [2022-11-25 17:46:10,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 475 events. 264/475 cut-off events. For 4861/4861 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1716 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2491. Up to 249 conditions per place. [2022-11-25 17:46:10,079 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2022-11-25 17:46:10,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 1505 flow [2022-11-25 17:46:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 17:46:10,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-25 17:46:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 995 transitions. [2022-11-25 17:46:10,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4675751879699248 [2022-11-25 17:46:10,084 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 995 transitions. [2022-11-25 17:46:10,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 995 transitions. [2022-11-25 17:46:10,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:10,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 995 transitions. [2022-11-25 17:46:10,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 62.1875) internal successors, (995), 16 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:10,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 133.0) internal successors, (2261), 17 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:10,094 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 133.0) internal successors, (2261), 17 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:10,095 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 735 flow. Second operand 16 states and 995 transitions. [2022-11-25 17:46:10,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 1505 flow [2022-11-25 17:46:10,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 1144 flow, removed 167 selfloop flow, removed 5 redundant places. [2022-11-25 17:46:10,125 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 813 flow [2022-11-25 17:46:10,126 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=813, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2022-11-25 17:46:10,127 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 70 predicate places. [2022-11-25 17:46:10,127 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 813 flow [2022-11-25 17:46:10,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 58.75) internal successors, (940), 16 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:10,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:10,128 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:10,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:10,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:10,336 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:10,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1989738532, now seen corresponding path program 6 times [2022-11-25 17:46:10,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:10,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526133729] [2022-11-25 17:46:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:10,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:10,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:10,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526133729] [2022-11-25 17:46:10,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526133729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:10,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864182943] [2022-11-25 17:46:10,545 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:46:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:10,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:10,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:46:10,667 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-25 17:46:10,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:10,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:46:10,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:10,743 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:10,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:10,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864182943] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:10,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:10,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-25 17:46:10,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473683857] [2022-11-25 17:46:10,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:10,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:46:10,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:10,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:46:10,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:46:11,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:11,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 813 flow. Second operand has 17 states, 17 states have (on average 58.76470588235294) internal successors, (999), 17 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:11,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:11,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:11,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:11,902 INFO L130 PetriNetUnfolder]: 418/767 cut-off events. [2022-11-25 17:46:11,903 INFO L131 PetriNetUnfolder]: For 12977/12977 co-relation queries the response was YES. [2022-11-25 17:46:11,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 767 events. 418/767 cut-off events. For 12977/12977 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3427 event pairs, 44 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4069. Up to 230 conditions per place. [2022-11-25 17:46:11,912 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2022-11-25 17:46:11,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 183 transitions, 2135 flow [2022-11-25 17:46:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-25 17:46:11,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-25 17:46:11,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1368 transitions. [2022-11-25 17:46:11,918 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4675324675324675 [2022-11-25 17:46:11,918 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1368 transitions. [2022-11-25 17:46:11,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1368 transitions. [2022-11-25 17:46:11,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:11,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1368 transitions. [2022-11-25 17:46:11,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 62.18181818181818) internal successors, (1368), 22 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:11,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 133.0) internal successors, (3059), 23 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:11,932 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 133.0) internal successors, (3059), 23 states have internal predecessors, (3059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:11,932 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 813 flow. Second operand 22 states and 1368 transitions. [2022-11-25 17:46:11,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 183 transitions, 2135 flow [2022-11-25 17:46:11,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 183 transitions, 2040 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-25 17:46:11,970 INFO L231 Difference]: Finished difference. Result has 119 places, 109 transitions, 1544 flow [2022-11-25 17:46:11,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1544, PETRI_PLACES=119, PETRI_TRANSITIONS=109} [2022-11-25 17:46:11,971 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 101 predicate places. [2022-11-25 17:46:11,972 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 109 transitions, 1544 flow [2022-11-25 17:46:11,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.76470588235294) internal successors, (999), 17 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:11,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:11,973 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:11,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 17:46:12,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:12,180 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:12,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:12,180 INFO L85 PathProgramCache]: Analyzing trace with hash 870285422, now seen corresponding path program 7 times [2022-11-25 17:46:12,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:12,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981263441] [2022-11-25 17:46:12,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:12,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:12,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:12,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981263441] [2022-11-25 17:46:12,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981263441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:12,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761226957] [2022-11-25 17:46:12,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:46:12,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:12,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:12,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:12,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:46:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:12,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 17:46:12,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:12,584 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:12,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:12,755 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:12,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761226957] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:12,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:12,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-25 17:46:12,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181608734] [2022-11-25 17:46:12,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:12,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-25 17:46:12,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:12,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-25 17:46:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:46:12,871 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:12,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 109 transitions, 1544 flow. Second operand has 17 states, 17 states have (on average 58.76470588235294) internal successors, (999), 17 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:12,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:12,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:12,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:13,947 INFO L130 PetriNetUnfolder]: 582/1047 cut-off events. [2022-11-25 17:46:13,948 INFO L131 PetriNetUnfolder]: For 34797/34797 co-relation queries the response was YES. [2022-11-25 17:46:13,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 1047 events. 582/1047 cut-off events. For 34797/34797 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4916 event pairs, 20 based on Foata normal form. 32/1079 useless extension candidates. Maximal degree in co-relation 7315. Up to 330 conditions per place. [2022-11-25 17:46:13,963 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 61 selfloop transitions, 129 changer transitions 48/238 dead transitions. [2022-11-25 17:46:13,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 238 transitions, 3696 flow [2022-11-25 17:46:13,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-25 17:46:13,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-25 17:46:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1679 transitions. [2022-11-25 17:46:13,970 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.467557783347257 [2022-11-25 17:46:13,970 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1679 transitions. [2022-11-25 17:46:13,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1679 transitions. [2022-11-25 17:46:13,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:13,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1679 transitions. [2022-11-25 17:46:13,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 62.18518518518518) internal successors, (1679), 27 states have internal predecessors, (1679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:13,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 133.0) internal successors, (3724), 28 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:13,986 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 133.0) internal successors, (3724), 28 states have internal predecessors, (3724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:13,986 INFO L175 Difference]: Start difference. First operand has 119 places, 109 transitions, 1544 flow. Second operand 27 states and 1679 transitions. [2022-11-25 17:46:13,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 238 transitions, 3696 flow [2022-11-25 17:46:14,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 238 transitions, 3378 flow, removed 149 selfloop flow, removed 4 redundant places. [2022-11-25 17:46:14,099 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 2545 flow [2022-11-25 17:46:14,100 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2545, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2022-11-25 17:46:14,101 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 138 predicate places. [2022-11-25 17:46:14,101 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 2545 flow [2022-11-25 17:46:14,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 58.76470588235294) internal successors, (999), 17 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:14,102 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:14,102 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:14,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:14,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:46:14,309 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:14,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:14,310 INFO L85 PathProgramCache]: Analyzing trace with hash -248661501, now seen corresponding path program 8 times [2022-11-25 17:46:14,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:14,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932534249] [2022-11-25 17:46:14,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:14,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:14,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:14,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932534249] [2022-11-25 17:46:14,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932534249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:14,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939686628] [2022-11-25 17:46:14,622 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:46:14,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:14,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:14,634 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:14,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:46:14,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:46:14,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:14,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 17:46:14,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:14,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:15,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939686628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:15,095 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:15,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-25 17:46:15,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356602607] [2022-11-25 17:46:15,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:15,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-25 17:46:15,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-25 17:46:15,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2022-11-25 17:46:15,225 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:15,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 2545 flow. Second operand has 25 states, 25 states have (on average 58.44) internal successors, (1461), 25 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:15,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:15,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:15,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:16,969 INFO L130 PetriNetUnfolder]: 814/1447 cut-off events. [2022-11-25 17:46:16,970 INFO L131 PetriNetUnfolder]: For 83146/83146 co-relation queries the response was YES. [2022-11-25 17:46:16,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13290 conditions, 1447 events. 814/1447 cut-off events. For 83146/83146 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6650 event pairs, 26 based on Foata normal form. 40/1487 useless extension candidates. Maximal degree in co-relation 13216. Up to 485 conditions per place. [2022-11-25 17:46:16,997 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 69 selfloop transitions, 184 changer transitions 70/323 dead transitions. [2022-11-25 17:46:16,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 323 transitions, 6844 flow [2022-11-25 17:46:16,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-25 17:46:16,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-25 17:46:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2354 transitions. [2022-11-25 17:46:17,008 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46576968737633556 [2022-11-25 17:46:17,008 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2354 transitions. [2022-11-25 17:46:17,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2354 transitions. [2022-11-25 17:46:17,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:17,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2354 transitions. [2022-11-25 17:46:17,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 61.94736842105263) internal successors, (2354), 38 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 133.0) internal successors, (5187), 39 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,038 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 133.0) internal successors, (5187), 39 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,038 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 2545 flow. Second operand 38 states and 2354 transitions. [2022-11-25 17:46:17,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 323 transitions, 6844 flow [2022-11-25 17:46:17,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 323 transitions, 5313 flow, removed 740 selfloop flow, removed 10 redundant places. [2022-11-25 17:46:17,384 INFO L231 Difference]: Finished difference. Result has 203 places, 212 transitions, 3754 flow [2022-11-25 17:46:17,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3754, PETRI_PLACES=203, PETRI_TRANSITIONS=212} [2022-11-25 17:46:17,385 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 185 predicate places. [2022-11-25 17:46:17,385 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 212 transitions, 3754 flow [2022-11-25 17:46:17,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 58.44) internal successors, (1461), 25 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:17,387 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:17,387 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:17,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:17,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:46:17,594 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:17,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:17,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1245384494, now seen corresponding path program 9 times [2022-11-25 17:46:17,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:17,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98737094] [2022-11-25 17:46:17,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:17,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:18,178 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:18,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:18,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98737094] [2022-11-25 17:46:18,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98737094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:18,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913265210] [2022-11-25 17:46:18,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 17:46:18,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:18,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:18,183 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:18,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:46:18,317 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-25 17:46:18,317 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:18,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:46:18,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:18,441 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:18,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:19,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913265210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:19,363 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:19,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-11-25 17:46:19,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460119255] [2022-11-25 17:46:19,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:19,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-25 17:46:19,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:19,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-25 17:46:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 17:46:19,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:19,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 212 transitions, 3754 flow. Second operand has 40 states, 40 states have (on average 58.3) internal successors, (2332), 40 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:19,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:19,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:19,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:21,778 INFO L130 PetriNetUnfolder]: 934/1687 cut-off events. [2022-11-25 17:46:21,778 INFO L131 PetriNetUnfolder]: For 144316/144316 co-relation queries the response was YES. [2022-11-25 17:46:21,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17527 conditions, 1687 events. 934/1687 cut-off events. For 144316/144316 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7589 event pairs, 275 based on Foata normal form. 80/1767 useless extension candidates. Maximal degree in co-relation 17434. Up to 1189 conditions per place. [2022-11-25 17:46:21,812 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 227 selfloop transitions, 61 changer transitions 75/363 dead transitions. [2022-11-25 17:46:21,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 363 transitions, 8342 flow [2022-11-25 17:46:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-25 17:46:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-25 17:46:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2471 transitions. [2022-11-25 17:46:21,819 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4644736842105263 [2022-11-25 17:46:21,820 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2471 transitions. [2022-11-25 17:46:21,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2471 transitions. [2022-11-25 17:46:21,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:21,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2471 transitions. [2022-11-25 17:46:21,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 61.775) internal successors, (2471), 40 states have internal predecessors, (2471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:21,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 133.0) internal successors, (5453), 41 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:21,840 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 133.0) internal successors, (5453), 41 states have internal predecessors, (5453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:21,840 INFO L175 Difference]: Start difference. First operand has 203 places, 212 transitions, 3754 flow. Second operand 40 states and 2471 transitions. [2022-11-25 17:46:21,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 363 transitions, 8342 flow [2022-11-25 17:46:22,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 363 transitions, 7062 flow, removed 614 selfloop flow, removed 6 redundant places. [2022-11-25 17:46:22,318 INFO L231 Difference]: Finished difference. Result has 258 places, 242 transitions, 4471 flow [2022-11-25 17:46:22,319 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=2958, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4471, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2022-11-25 17:46:22,320 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 240 predicate places. [2022-11-25 17:46:22,320 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 4471 flow [2022-11-25 17:46:22,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 58.3) internal successors, (2332), 40 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:22,322 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:22,322 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:22,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:22,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 17:46:22,530 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:22,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:22,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1804050468, now seen corresponding path program 10 times [2022-11-25 17:46:22,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:22,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314998000] [2022-11-25 17:46:22,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:22,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:23,145 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:23,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:23,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314998000] [2022-11-25 17:46:23,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314998000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:23,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534915281] [2022-11-25 17:46:23,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 17:46:23,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:23,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:23,149 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:23,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:46:23,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 17:46:23,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:23,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:46:23,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:23,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:24,208 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:24,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534915281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:24,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:24,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2022-11-25 17:46:24,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786698716] [2022-11-25 17:46:24,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:24,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-25 17:46:24,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:24,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-25 17:46:24,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2022-11-25 17:46:24,390 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:24,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 4471 flow. Second operand has 41 states, 41 states have (on average 58.31707317073171) internal successors, (2391), 41 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:24,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:24,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:24,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:27,237 INFO L130 PetriNetUnfolder]: 1214/2247 cut-off events. [2022-11-25 17:46:27,238 INFO L131 PetriNetUnfolder]: For 367679/367679 co-relation queries the response was YES. [2022-11-25 17:46:27,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27411 conditions, 2247 events. 1214/2247 cut-off events. For 367679/367679 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10873 event pairs, 172 based on Foata normal form. 80/2327 useless extension candidates. Maximal degree in co-relation 27295. Up to 881 conditions per place. [2022-11-25 17:46:27,300 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 188 selfloop transitions, 186 changer transitions 87/461 dead transitions. [2022-11-25 17:46:27,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 461 transitions, 10710 flow [2022-11-25 17:46:27,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-25 17:46:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-11-25 17:46:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 2844 transitions. [2022-11-25 17:46:27,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46485779666557697 [2022-11-25 17:46:27,308 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 2844 transitions. [2022-11-25 17:46:27,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 2844 transitions. [2022-11-25 17:46:27,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:27,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 2844 transitions. [2022-11-25 17:46:27,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 61.82608695652174) internal successors, (2844), 46 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:27,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 133.0) internal successors, (6251), 47 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:27,331 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 133.0) internal successors, (6251), 47 states have internal predecessors, (6251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:27,332 INFO L175 Difference]: Start difference. First operand has 258 places, 242 transitions, 4471 flow. Second operand 46 states and 2844 transitions. [2022-11-25 17:46:27,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 461 transitions, 10710 flow [2022-11-25 17:46:28,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 461 transitions, 9571 flow, removed 542 selfloop flow, removed 14 redundant places. [2022-11-25 17:46:28,422 INFO L231 Difference]: Finished difference. Result has 309 places, 311 transitions, 6193 flow [2022-11-25 17:46:28,422 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6193, PETRI_PLACES=309, PETRI_TRANSITIONS=311} [2022-11-25 17:46:28,424 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 291 predicate places. [2022-11-25 17:46:28,424 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 311 transitions, 6193 flow [2022-11-25 17:46:28,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 58.31707317073171) internal successors, (2391), 41 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:28,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:28,425 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:28,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:28,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:46:28,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:28,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:28,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1709286096, now seen corresponding path program 11 times [2022-11-25 17:46:28,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:28,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418288215] [2022-11-25 17:46:28,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:28,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:28,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:29,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418288215] [2022-11-25 17:46:29,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418288215] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:29,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083042570] [2022-11-25 17:46:29,153 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 17:46:29,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:29,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:29,155 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:29,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:46:29,294 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-11-25 17:46:29,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:29,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 17:46:29,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:29,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:30,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083042570] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:30,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:30,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2022-11-25 17:46:30,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170925641] [2022-11-25 17:46:30,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:30,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-25 17:46:30,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:30,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-25 17:46:30,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1355, Unknown=0, NotChecked=0, Total=1640 [2022-11-25 17:46:30,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:30,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 311 transitions, 6193 flow. Second operand has 41 states, 41 states have (on average 58.31707317073171) internal successors, (2391), 41 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:30,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:30,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:30,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:34,609 INFO L130 PetriNetUnfolder]: 1734/3227 cut-off events. [2022-11-25 17:46:34,609 INFO L131 PetriNetUnfolder]: For 863690/863690 co-relation queries the response was YES. [2022-11-25 17:46:34,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47591 conditions, 3227 events. 1734/3227 cut-off events. For 863690/863690 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17360 event pairs, 46 based on Foata normal form. 80/3307 useless extension candidates. Maximal degree in co-relation 47454. Up to 1337 conditions per place. [2022-11-25 17:46:34,753 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 116 selfloop transitions, 403 changer transitions 109/628 dead transitions. [2022-11-25 17:46:34,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 628 transitions, 16627 flow [2022-11-25 17:46:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-25 17:46:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-25 17:46:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3587 transitions. [2022-11-25 17:46:34,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46499870365569096 [2022-11-25 17:46:34,770 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3587 transitions. [2022-11-25 17:46:34,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3587 transitions. [2022-11-25 17:46:34,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:34,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3587 transitions. [2022-11-25 17:46:34,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 61.8448275862069) internal successors, (3587), 58 states have internal predecessors, (3587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:34,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 133.0) internal successors, (7847), 59 states have internal predecessors, (7847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:34,804 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 133.0) internal successors, (7847), 59 states have internal predecessors, (7847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:34,804 INFO L175 Difference]: Start difference. First operand has 309 places, 311 transitions, 6193 flow. Second operand 58 states and 3587 transitions. [2022-11-25 17:46:34,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 628 transitions, 16627 flow [2022-11-25 17:46:37,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 628 transitions, 14665 flow, removed 940 selfloop flow, removed 14 redundant places. [2022-11-25 17:46:37,271 INFO L231 Difference]: Finished difference. Result has 380 places, 445 transitions, 9686 flow [2022-11-25 17:46:37,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=9686, PETRI_PLACES=380, PETRI_TRANSITIONS=445} [2022-11-25 17:46:37,272 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 362 predicate places. [2022-11-25 17:46:37,273 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 445 transitions, 9686 flow [2022-11-25 17:46:37,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 58.31707317073171) internal successors, (2391), 41 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:37,274 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:37,274 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:37,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 17:46:37,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:37,481 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:37,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:37,481 INFO L85 PathProgramCache]: Analyzing trace with hash 567190564, now seen corresponding path program 12 times [2022-11-25 17:46:37,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:37,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489738082] [2022-11-25 17:46:37,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:37,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:38,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:38,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489738082] [2022-11-25 17:46:38,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489738082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:38,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853839112] [2022-11-25 17:46:38,003 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-25 17:46:38,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:38,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:38,005 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:38,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:46:38,139 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-11-25 17:46:38,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:46:38,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 17:46:38,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:38,210 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:38,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:46:38,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853839112] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:38,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:38,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-11-25 17:46:38,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560074338] [2022-11-25 17:46:38,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:38,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-25 17:46:38,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:38,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-25 17:46:38,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1189, Unknown=0, NotChecked=0, Total=1560 [2022-11-25 17:46:38,817 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:38,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 445 transitions, 9686 flow. Second operand has 40 states, 40 states have (on average 58.3) internal successors, (2332), 40 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:38,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:38,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:38,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:44,280 INFO L130 PetriNetUnfolder]: 2118/3899 cut-off events. [2022-11-25 17:46:44,281 INFO L131 PetriNetUnfolder]: For 1628886/1628886 co-relation queries the response was YES. [2022-11-25 17:46:44,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71795 conditions, 3899 events. 2118/3899 cut-off events. For 1628886/1628886 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 21264 event pairs, 28 based on Foata normal form. 84/3983 useless extension candidates. Maximal degree in co-relation 71629. Up to 1625 conditions per place. [2022-11-25 17:46:44,373 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 121 selfloop transitions, 514 changer transitions 137/772 dead transitions. [2022-11-25 17:46:44,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 772 transitions, 26333 flow [2022-11-25 17:46:44,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-11-25 17:46:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-11-25 17:46:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 4643 transitions. [2022-11-25 17:46:44,386 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4654636591478697 [2022-11-25 17:46:44,386 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 4643 transitions. [2022-11-25 17:46:44,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 4643 transitions. [2022-11-25 17:46:44,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:44,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 4643 transitions. [2022-11-25 17:46:44,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 61.906666666666666) internal successors, (4643), 75 states have internal predecessors, (4643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:44,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 133.0) internal successors, (10108), 76 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:44,419 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 133.0) internal successors, (10108), 76 states have internal predecessors, (10108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:44,419 INFO L175 Difference]: Start difference. First operand has 380 places, 445 transitions, 9686 flow. Second operand 75 states and 4643 transitions. [2022-11-25 17:46:44,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 772 transitions, 26333 flow [2022-11-25 17:46:48,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 772 transitions, 20341 flow, removed 2880 selfloop flow, removed 21 redundant places. [2022-11-25 17:46:48,116 INFO L231 Difference]: Finished difference. Result has 472 places, 540 transitions, 13192 flow [2022-11-25 17:46:48,116 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=6866, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=420, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=13192, PETRI_PLACES=472, PETRI_TRANSITIONS=540} [2022-11-25 17:46:48,117 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 454 predicate places. [2022-11-25 17:46:48,117 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 540 transitions, 13192 flow [2022-11-25 17:46:48,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 58.3) internal successors, (2332), 40 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:48,119 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:46:48,119 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:46:48,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:46:48,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-25 17:46:48,326 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:46:48,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:46:48,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1340469584, now seen corresponding path program 13 times [2022-11-25 17:46:48,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:46:48,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143403826] [2022-11-25 17:46:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:46:48,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:46:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:49,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:46:49,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143403826] [2022-11-25 17:46:49,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143403826] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:46:49,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056061552] [2022-11-25 17:46:49,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-25 17:46:49,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:46:49,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:46:49,307 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:46:49,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:46:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:46:49,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 17:46:49,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:46:49,610 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:49,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:46:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:46:50,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056061552] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:46:50,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:46:50,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2022-11-25 17:46:50,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225313425] [2022-11-25 17:46:50,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:46:50,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-25 17:46:50,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:46:50,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-25 17:46:50,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1015, Invalid=3275, Unknown=0, NotChecked=0, Total=4290 [2022-11-25 17:46:50,717 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:46:50,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 540 transitions, 13192 flow. Second operand has 66 states, 66 states have (on average 58.166666666666664) internal successors, (3839), 66 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:50,722 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:46:50,722 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:46:50,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:46:58,480 INFO L130 PetriNetUnfolder]: 2610/4803 cut-off events. [2022-11-25 17:46:58,480 INFO L131 PetriNetUnfolder]: For 2335764/2335764 co-relation queries the response was YES. [2022-11-25 17:46:58,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101729 conditions, 4803 events. 2610/4803 cut-off events. For 2335764/2335764 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 26521 event pairs, 12 based on Foata normal form. 48/4851 useless extension candidates. Maximal degree in co-relation 101524. Up to 2009 conditions per place. [2022-11-25 17:46:58,610 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 119 selfloop transitions, 639 changer transitions 158/916 dead transitions. [2022-11-25 17:46:58,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 916 transitions, 36011 flow [2022-11-25 17:46:58,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-11-25 17:46:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2022-11-25 17:46:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 5064 transitions. [2022-11-25 17:46:58,627 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4643315606088392 [2022-11-25 17:46:58,627 INFO L72 ComplementDD]: Start complementDD. Operand 82 states and 5064 transitions. [2022-11-25 17:46:58,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 82 states and 5064 transitions. [2022-11-25 17:46:58,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:46:58,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 82 states and 5064 transitions. [2022-11-25 17:46:58,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 83 states, 82 states have (on average 61.75609756097561) internal successors, (5064), 82 states have internal predecessors, (5064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:58,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 83 states, 83 states have (on average 133.0) internal successors, (11039), 83 states have internal predecessors, (11039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:58,681 INFO L81 ComplementDD]: Finished complementDD. Result has 83 states, 83 states have (on average 133.0) internal successors, (11039), 83 states have internal predecessors, (11039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:46:58,681 INFO L175 Difference]: Start difference. First operand has 472 places, 540 transitions, 13192 flow. Second operand 82 states and 5064 transitions. [2022-11-25 17:46:58,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 916 transitions, 36011 flow [2022-11-25 17:47:08,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 916 transitions, 25132 flow, removed 5230 selfloop flow, removed 31 redundant places. [2022-11-25 17:47:08,052 INFO L231 Difference]: Finished difference. Result has 541 places, 667 transitions, 13965 flow [2022-11-25 17:47:08,053 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=8641, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=513, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=82, PETRI_FLOW=13965, PETRI_PLACES=541, PETRI_TRANSITIONS=667} [2022-11-25 17:47:08,053 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 523 predicate places. [2022-11-25 17:47:08,053 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 667 transitions, 13965 flow [2022-11-25 17:47:08,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 58.166666666666664) internal successors, (3839), 66 states have internal predecessors, (3839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:47:08,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:47:08,055 INFO L209 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:47:08,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:47:08,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 17:47:08,266 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:47:08,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:08,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1815852972, now seen corresponding path program 14 times [2022-11-25 17:47:08,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:08,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096045159] [2022-11-25 17:47:08,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:08,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:47:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:47:09,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:47:09,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096045159] [2022-11-25 17:47:09,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096045159] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:47:09,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325550836] [2022-11-25 17:47:09,635 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:47:09,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:47:09,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:47:09,637 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:47:09,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 17:47:09,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 17:47:09,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:47:09,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-25 17:47:09,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:47:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:47:10,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:47:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:47:10,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325550836] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:47:10,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:47:10,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 46 [2022-11-25 17:47:10,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935277008] [2022-11-25 17:47:10,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:47:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-25 17:47:10,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:47:10,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-25 17:47:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=1733, Unknown=0, NotChecked=0, Total=2256 [2022-11-25 17:47:11,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 133 [2022-11-25 17:47:11,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 667 transitions, 13965 flow. Second operand has 48 states, 48 states have (on average 58.25) internal successors, (2796), 48 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:47:11,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:47:11,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 133 [2022-11-25 17:47:11,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:47:18,747 INFO L130 PetriNetUnfolder]: 2722/4991 cut-off events. [2022-11-25 17:47:18,747 INFO L131 PetriNetUnfolder]: For 2975264/2975264 co-relation queries the response was YES. [2022-11-25 17:47:18,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106336 conditions, 4991 events. 2722/4991 cut-off events. For 2975264/2975264 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 27333 event pairs, 18 based on Foata normal form. 20/5011 useless extension candidates. Maximal degree in co-relation 106113. Up to 2061 conditions per place. [2022-11-25 17:47:19,018 INFO L137 encePairwiseOnDemand]: 128/133 looper letters, 130 selfloop transitions, 667 changer transitions 170/967 dead transitions. [2022-11-25 17:47:19,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 967 transitions, 32070 flow [2022-11-25 17:47:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-11-25 17:47:19,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-11-25 17:47:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 5428 transitions. [2022-11-25 17:47:19,028 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46377306903622695 [2022-11-25 17:47:19,028 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 5428 transitions. [2022-11-25 17:47:19,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 5428 transitions. [2022-11-25 17:47:19,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:47:19,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 5428 transitions. [2022-11-25 17:47:19,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 61.68181818181818) internal successors, (5428), 88 states have internal predecessors, (5428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:47:19,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 133.0) internal successors, (11837), 89 states have internal predecessors, (11837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:47:19,059 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 133.0) internal successors, (11837), 89 states have internal predecessors, (11837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:47:19,060 INFO L175 Difference]: Start difference. First operand has 541 places, 667 transitions, 13965 flow. Second operand 88 states and 5428 transitions. [2022-11-25 17:47:19,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 967 transitions, 32070 flow [2022-11-25 17:47:29,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 967 transitions, 27699 flow, removed 2048 selfloop flow, removed 20 redundant places. [2022-11-25 17:47:29,286 INFO L231 Difference]: Finished difference. Result has 618 places, 695 transitions, 14153 flow [2022-11-25 17:47:29,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=10970, PETRI_DIFFERENCE_MINUEND_PLACES=521, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=667, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=640, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=14153, PETRI_PLACES=618, PETRI_TRANSITIONS=695} [2022-11-25 17:47:29,288 INFO L288 CegarLoopForPetriNet]: 18 programPoint places, 600 predicate places. [2022-11-25 17:47:29,288 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 695 transitions, 14153 flow [2022-11-25 17:47:29,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 58.25) internal successors, (2796), 48 states have internal predecessors, (2796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:47:29,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:47:29,289 INFO L209 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:47:29,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 17:47:29,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 17:47:29,491 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-25 17:47:29,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:47:29,492 INFO L85 PathProgramCache]: Analyzing trace with hash 541320040, now seen corresponding path program 15 times [2022-11-25 17:47:29,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:47:29,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194397603] [2022-11-25 17:47:29,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:47:29,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:47:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:47:29,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-25 17:47:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-25 17:47:29,585 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-25 17:47:29,586 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-11-25 17:47:29,587 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-25 17:47:29,589 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-25 17:47:29,590 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-25 17:47:29,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:47:29,591 INFO L445 BasicCegarLoop]: Path program histogram: [15, 2, 1] [2022-11-25 17:47:29,597 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:47:29,597 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:47:29,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:47:29 BasicIcfg [2022-11-25 17:47:29,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:47:29,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:47:29,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:47:29,721 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:47:29,722 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:46:00" (3/4) ... [2022-11-25 17:47:29,724 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-25 17:47:29,864 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:47:29,864 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:47:29,865 INFO L158 Benchmark]: Toolchain (without parser) took 90664.82ms. Allocated memory was 155.2MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 110.0MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 853.8MB. Max. memory is 16.1GB. [2022-11-25 17:47:29,865 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 155.2MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:47:29,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 650.39ms. Allocated memory is still 155.2MB. Free memory was 109.6MB in the beginning and 89.5MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-25 17:47:29,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.45ms. Allocated memory is still 155.2MB. Free memory was 89.5MB in the beginning and 87.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:47:29,867 INFO L158 Benchmark]: Boogie Preprocessor took 68.91ms. Allocated memory is still 155.2MB. Free memory was 87.5MB in the beginning and 86.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:47:29,867 INFO L158 Benchmark]: RCFGBuilder took 607.32ms. Allocated memory is still 155.2MB. Free memory was 86.0MB in the beginning and 74.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-25 17:47:29,867 INFO L158 Benchmark]: TraceAbstraction took 89096.34ms. Allocated memory was 155.2MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 72.8MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 803.5MB. Max. memory is 16.1GB. [2022-11-25 17:47:29,868 INFO L158 Benchmark]: Witness Printer took 143.57ms. Allocated memory is still 4.6GB. Free memory was 3.7GB in the beginning and 3.7GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-25 17:47:29,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 155.2MB. Free memory is still 99.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 650.39ms. Allocated memory is still 155.2MB. Free memory was 109.6MB in the beginning and 89.5MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 89.45ms. Allocated memory is still 155.2MB. Free memory was 89.5MB in the beginning and 87.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.91ms. Allocated memory is still 155.2MB. Free memory was 87.5MB in the beginning and 86.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 607.32ms. Allocated memory is still 155.2MB. Free memory was 86.0MB in the beginning and 74.0MB in the end (delta: 12.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 89096.34ms. Allocated memory was 155.2MB in the beginning and 4.6GB in the end (delta: 4.4GB). Free memory was 72.8MB in the beginning and 3.7GB in the end (delta: -3.6GB). Peak memory consumption was 803.5MB. Max. memory is 16.1GB. * Witness Printer took 143.57ms. Allocated memory is still 4.6GB. Free memory was 3.7GB in the beginning and 3.7GB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 70 PlacesBefore, 18 PlacesAfterwards, 68 TransitionsBefore, 14 TransitionsAfterwards, 1122 CoEnabledTransitionPairs, 5 FixpointIterations, 21 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 63 TotalNumberOfCompositions, 1024 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 904, independent: 878, independent conditional: 0, independent unconditional: 878, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 751, independent: 736, independent conditional: 0, independent unconditional: 736, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 751, independent: 736, independent conditional: 0, independent unconditional: 736, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 56, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 904, independent: 142, independent conditional: 0, independent unconditional: 142, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 751, unknown conditional: 0, unknown unconditional: 751] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={3:0}, id2={5:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=-2] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={3:0}, id2={5:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=-1] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=1, k=0] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, i=7, id1={3:0}, id2={5:0}, j=6, k=1, k=0] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=3, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=5, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=6, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=7, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=9, k=10] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=12, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=14, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=18, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=20, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, condJ=1, i=45, id1={3:0}, id2={5:0}, j=46, k=20, k=20] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 88 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: 88.8s, OverallIterations: 18, TraceHistogramMax: 20, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 66.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7529 SdHoareTripleChecker+Valid, 6.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7423 mSDsluCounter, 1131 SdHoareTripleChecker+Invalid, 5.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1111 mSDsCounter, 805 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6257 IncrementalHoareTripleChecker+Invalid, 7062 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 805 mSolverCounterUnsat, 20 mSDtfsCounter, 6257 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1172 GetRequests, 298 SyntacticMatches, 40 SemanticMatches, 834 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23479 ImplicationChecksByTransitivity, 21.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14153occurred in iteration=17, InterpolantAutomatonStates: 543, 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: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 13.8s InterpolantComputationTime, 616 NumberOfCodeBlocks, 615 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 787 ConstructedInterpolants, 0 QuantifiedInterpolants, 3375 SizeOfPredicates, 163 NumberOfNonLiveVariables, 2055 ConjunctsInSsa, 231 ConjunctsInUnsatCore, 39 InterpolantComputations, 6 PerfectInterpolantSequences, 21/2646 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 RESULT: Ultimate proved your program to be incorrect! [2022-11-25 17:47:29,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_372bd077-04ee-48eb-82c3-2e8ad19570d8/bin/uautomizer-ZsLfNo2U6R/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE