./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc --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 76dbb78f4fe406633111c7d7e2c1e8bd933a1f67e6e1cf5d4cbd1b0379bfe086 --- 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-5e519f3 [2022-11-02 20:49:54,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:49:54,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:49:54,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:49:54,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:49:54,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:49:54,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:49:54,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:49:54,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:49:54,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:49:54,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:49:54,683 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:49:54,683 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:49:54,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:49:54,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:49:54,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:49:54,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:49:54,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:49:54,689 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:49:54,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:49:54,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:49:54,708 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:49:54,712 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:49:54,713 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:49:54,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:49:54,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:49:54,721 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:49:54,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:49:54,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:49:54,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:49:54,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:49:54,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:49:54,727 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:49:54,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:49:54,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:49:54,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:49:54,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:49:54,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:49:54,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:49:54,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:49:54,733 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:49:54,734 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:49:54,778 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:49:54,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:49:54,779 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:49:54,780 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:49:54,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:49:54,781 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:49:54,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:49:54,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:49:54,782 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:49:54,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:49:54,783 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:49:54,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:49:54,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:49:54,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:49:54,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:49:54,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:49:54,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:49:54,785 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:49:54,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:49:54,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:49:54,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:49:54,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:49:54,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:49:54,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:49:54,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:49:54,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:49:54,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:49:54,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:49:54,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:49:54,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:49:54,789 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:49:54,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:49:54,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:49:54,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76dbb78f4fe406633111c7d7e2c1e8bd933a1f67e6e1cf5d4cbd1b0379bfe086 [2022-11-02 20:49:55,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:49:55,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:49:55,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:49:55,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:49:55,137 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:49:55,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2022-11-02 20:49:55,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/data/6b4ee9671/2ade4fbf65f14ffa9538acb1fadb6753/FLAGd4b54cf7d [2022-11-02 20:49:55,771 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:49:55,772 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/sv-benchmarks/c/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2022-11-02 20:49:55,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/data/6b4ee9671/2ade4fbf65f14ffa9538acb1fadb6753/FLAGd4b54cf7d [2022-11-02 20:49:56,042 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/data/6b4ee9671/2ade4fbf65f14ffa9538acb1fadb6753 [2022-11-02 20:49:56,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:49:56,049 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:49:56,052 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:56,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:49:56,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:49:56,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,059 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c587a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56, skipping insertion in model container [2022-11-02 20:49:56,059 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:49:56,133 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:49:56,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/sv-benchmarks/c/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i[979,992] [2022-11-02 20:49:56,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:56,658 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:49:56,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/sv-benchmarks/c/pthread-wmm/mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i[979,992] [2022-11-02 20:49:56,715 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:49:56,765 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:49:56,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56 WrapperNode [2022-11-02 20:49:56,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:49:56,767 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:49:56,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:49:56,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:49:56,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,829 INFO L138 Inliner]: procedures = 177, calls = 67, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-11-02 20:49:56,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:49:56,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:49:56,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:49:56,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:49:56,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:49:56,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:49:56,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:49:56,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:49:56,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (1/1) ... [2022-11-02 20:49:56,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:49:56,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:49:56,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:49:56,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d532b9c5-f315-4068-b4b2-c04fd809396d/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:49:56,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:49:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:49:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:49:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:49:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:49:56,987 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-02 20:49:56,988 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-02 20:49:56,988 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-02 20:49:56,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-02 20:49:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-11-02 20:49:56,989 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-11-02 20:49:56,989 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-11-02 20:49:56,990 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-11-02 20:49:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:49:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:49:56,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:49:56,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:49:56,992 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:49:57,224 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:49:57,227 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:49:57,936 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:49:58,428 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:49:58,429 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:49:58,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:49:58 BoogieIcfgContainer [2022-11-02 20:49:58,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:49:58,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:49:58,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:49:58,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:49:58,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:49:56" (1/3) ... [2022-11-02 20:49:58,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70874004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:49:58, skipping insertion in model container [2022-11-02 20:49:58,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:49:56" (2/3) ... [2022-11-02 20:49:58,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70874004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:49:58, skipping insertion in model container [2022-11-02 20:49:58,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:49:58" (3/3) ... [2022-11-02 20:49:58,441 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_power.oepc_power.opt_pso.oepc_rmo.oepc.i [2022-11-02 20:49:58,451 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:49:58,461 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:49:58,461 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:49:58,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:49:58,553 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:49:58,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 136 transitions, 292 flow [2022-11-02 20:49:58,682 INFO L130 PetriNetUnfolder]: 2/132 cut-off events. [2022-11-02 20:49:58,682 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:49:58,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 132 events. 2/132 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 70 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2022-11-02 20:49:58,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 147 places, 136 transitions, 292 flow [2022-11-02 20:49:58,695 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 132 transitions, 276 flow [2022-11-02 20:49:58,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:49:58,725 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;@29b6f32d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:49:58,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-02 20:49:58,735 INFO L130 PetriNetUnfolder]: 0/50 cut-off events. [2022-11-02 20:49:58,736 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:49:58,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:58,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:58,737 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:49:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1142825894, now seen corresponding path program 1 times [2022-11-02 20:49:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:58,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381880119] [2022-11-02 20:49:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:58,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:49:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:49:59,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:49:59,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381880119] [2022-11-02 20:49:59,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381880119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:49:59,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:49:59,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:49:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667030311] [2022-11-02 20:49:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:49:59,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:49:59,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:49:59,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:49:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:49:59,416 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 136 [2022-11-02 20:49:59,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 132 transitions, 276 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:59,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:49:59,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 136 [2022-11-02 20:49:59,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:49:59,718 INFO L130 PetriNetUnfolder]: 162/546 cut-off events. [2022-11-02 20:49:59,718 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-02 20:49:59,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 852 conditions, 546 events. 162/546 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2877 event pairs, 34 based on Foata normal form. 45/560 useless extension candidates. Maximal degree in co-relation 795. Up to 191 conditions per place. [2022-11-02 20:49:59,726 INFO L137 encePairwiseOnDemand]: 131/136 looper letters, 18 selfloop transitions, 2 changer transitions 0/136 dead transitions. [2022-11-02 20:49:59,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 136 transitions, 333 flow [2022-11-02 20:49:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:49:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:49:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2022-11-02 20:49:59,741 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9436274509803921 [2022-11-02 20:49:59,742 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2022-11-02 20:49:59,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2022-11-02 20:49:59,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:49:59,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2022-11-02 20:49:59,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:59,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:59,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:59,758 INFO L175 Difference]: Start difference. First operand has 143 places, 132 transitions, 276 flow. Second operand 3 states and 385 transitions. [2022-11-02 20:49:59,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 136 transitions, 333 flow [2022-11-02 20:49:59,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 136 transitions, 326 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:49:59,766 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 268 flow [2022-11-02 20:49:59,768 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-11-02 20:49:59,771 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, -4 predicate places. [2022-11-02 20:49:59,772 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 268 flow [2022-11-02 20:49:59,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:49:59,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:49:59,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:49:59,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:49:59,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:49:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:49:59,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1080347648, now seen corresponding path program 1 times [2022-11-02 20:49:59,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:49:59,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982543835] [2022-11-02 20:49:59,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:49:59,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:49:59,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:00,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:00,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:00,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982543835] [2022-11-02 20:50:00,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982543835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:00,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:00,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:50:00,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117327943] [2022-11-02 20:50:00,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:00,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:00,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:00,450 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 136 [2022-11-02 20:50:00,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 268 flow. Second operand has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:00,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:00,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 136 [2022-11-02 20:50:00,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:02,519 INFO L130 PetriNetUnfolder]: 2125/5419 cut-off events. [2022-11-02 20:50:02,519 INFO L131 PetriNetUnfolder]: For 208/208 co-relation queries the response was YES. [2022-11-02 20:50:02,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8744 conditions, 5419 events. 2125/5419 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 47850 event pairs, 1020 based on Foata normal form. 0/5256 useless extension candidates. Maximal degree in co-relation 8688. Up to 1734 conditions per place. [2022-11-02 20:50:02,559 INFO L137 encePairwiseOnDemand]: 129/136 looper letters, 27 selfloop transitions, 3 changer transitions 65/189 dead transitions. [2022-11-02 20:50:02,560 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 189 transitions, 574 flow [2022-11-02 20:50:02,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:50:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:50:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1083 transitions. [2022-11-02 20:50:02,567 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8848039215686274 [2022-11-02 20:50:02,567 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1083 transitions. [2022-11-02 20:50:02,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1083 transitions. [2022-11-02 20:50:02,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:02,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1083 transitions. [2022-11-02 20:50:02,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.33333333333333) internal successors, (1083), 9 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:02,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:02,578 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:02,578 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 268 flow. Second operand 9 states and 1083 transitions. [2022-11-02 20:50:02,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 189 transitions, 574 flow [2022-11-02 20:50:02,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 189 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:50:02,586 INFO L231 Difference]: Finished difference. Result has 152 places, 116 transitions, 279 flow [2022-11-02 20:50:02,586 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=279, PETRI_PLACES=152, PETRI_TRANSITIONS=116} [2022-11-02 20:50:02,588 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 9 predicate places. [2022-11-02 20:50:02,588 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 116 transitions, 279 flow [2022-11-02 20:50:02,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.0) internal successors, (678), 6 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:02,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:02,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:02,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:50:02,589 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:02,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:02,590 INFO L85 PathProgramCache]: Analyzing trace with hash -203435521, now seen corresponding path program 1 times [2022-11-02 20:50:02,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:02,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591153587] [2022-11-02 20:50:02,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:02,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:02,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:02,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591153587] [2022-11-02 20:50:02,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591153587] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:02,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:02,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:50:02,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516799868] [2022-11-02 20:50:02,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:02,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:02,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:02,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:02,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:02,981 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-11-02 20:50:02,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 116 transitions, 279 flow. Second operand has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:02,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:02,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-11-02 20:50:02,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:05,719 INFO L130 PetriNetUnfolder]: 4967/9068 cut-off events. [2022-11-02 20:50:05,719 INFO L131 PetriNetUnfolder]: For 1699/1699 co-relation queries the response was YES. [2022-11-02 20:50:05,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17849 conditions, 9068 events. 4967/9068 cut-off events. For 1699/1699 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 72997 event pairs, 309 based on Foata normal form. 0/8770 useless extension candidates. Maximal degree in co-relation 17786. Up to 2617 conditions per place. [2022-11-02 20:50:05,887 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 47 selfloop transitions, 8 changer transitions 50/198 dead transitions. [2022-11-02 20:50:05,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 198 transitions, 659 flow [2022-11-02 20:50:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:50:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:50:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1197 transitions. [2022-11-02 20:50:05,891 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8801470588235294 [2022-11-02 20:50:05,892 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1197 transitions. [2022-11-02 20:50:05,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1197 transitions. [2022-11-02 20:50:05,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:05,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1197 transitions. [2022-11-02 20:50:05,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 119.7) internal successors, (1197), 10 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) [2022-11-02 20:50:05,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:05,899 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 136.0) internal successors, (1496), 11 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:05,900 INFO L175 Difference]: Start difference. First operand has 152 places, 116 transitions, 279 flow. Second operand 10 states and 1197 transitions. [2022-11-02 20:50:05,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 198 transitions, 659 flow [2022-11-02 20:50:05,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 198 transitions, 650 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-02 20:50:05,934 INFO L231 Difference]: Finished difference. Result has 143 places, 121 transitions, 344 flow [2022-11-02 20:50:05,934 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=344, PETRI_PLACES=143, PETRI_TRANSITIONS=121} [2022-11-02 20:50:05,935 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 0 predicate places. [2022-11-02 20:50:05,935 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 121 transitions, 344 flow [2022-11-02 20:50:05,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.0) internal successors, (666), 6 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:05,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:05,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:05,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:50:05,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:05,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:05,937 INFO L85 PathProgramCache]: Analyzing trace with hash 69267629, now seen corresponding path program 1 times [2022-11-02 20:50:05,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:05,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248007464] [2022-11-02 20:50:05,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:05,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:06,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:06,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248007464] [2022-11-02 20:50:06,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248007464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:06,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:06,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:50:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145520972] [2022-11-02 20:50:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:06,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:50:06,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:50:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:50:06,269 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 136 [2022-11-02 20:50:06,271 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 121 transitions, 344 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:06,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:06,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 136 [2022-11-02 20:50:06,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:10,127 INFO L130 PetriNetUnfolder]: 6679/14920 cut-off events. [2022-11-02 20:50:10,127 INFO L131 PetriNetUnfolder]: For 11115/11782 co-relation queries the response was YES. [2022-11-02 20:50:10,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35930 conditions, 14920 events. 6679/14920 cut-off events. For 11115/11782 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 148302 event pairs, 2261 based on Foata normal form. 316/14500 useless extension candidates. Maximal degree in co-relation 35859. Up to 4016 conditions per place. [2022-11-02 20:50:10,295 INFO L137 encePairwiseOnDemand]: 126/136 looper letters, 75 selfloop transitions, 25 changer transitions 0/194 dead transitions. [2022-11-02 20:50:10,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 194 transitions, 770 flow [2022-11-02 20:50:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:50:10,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:50:10,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1053 transitions. [2022-11-02 20:50:10,298 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8602941176470589 [2022-11-02 20:50:10,299 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1053 transitions. [2022-11-02 20:50:10,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1053 transitions. [2022-11-02 20:50:10,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:10,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1053 transitions. [2022-11-02 20:50:10,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.0) internal successors, (1053), 9 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:10,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:10,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 136.0) internal successors, (1360), 10 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:10,312 INFO L175 Difference]: Start difference. First operand has 143 places, 121 transitions, 344 flow. Second operand 9 states and 1053 transitions. [2022-11-02 20:50:10,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 194 transitions, 770 flow [2022-11-02 20:50:10,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 194 transitions, 761 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-02 20:50:10,371 INFO L231 Difference]: Finished difference. Result has 151 places, 144 transitions, 577 flow [2022-11-02 20:50:10,376 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=577, PETRI_PLACES=151, PETRI_TRANSITIONS=144} [2022-11-02 20:50:10,378 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 8 predicate places. [2022-11-02 20:50:10,379 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 144 transitions, 577 flow [2022-11-02 20:50:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:10,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:10,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:10,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:50:10,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:10,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1220493915, now seen corresponding path program 1 times [2022-11-02 20:50:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:10,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159475864] [2022-11-02 20:50:10,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:10,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:10,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:10,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:10,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159475864] [2022-11-02 20:50:10,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159475864] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:10,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:10,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:50:10,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113995913] [2022-11-02 20:50:10,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:10,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:50:10,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:10,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:50:10,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:10,722 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-11-02 20:50:10,723 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 144 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:10,723 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:10,723 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-11-02 20:50:10,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:15,179 INFO L130 PetriNetUnfolder]: 7985/16193 cut-off events. [2022-11-02 20:50:15,179 INFO L131 PetriNetUnfolder]: For 26319/27231 co-relation queries the response was YES. [2022-11-02 20:50:15,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48126 conditions, 16193 events. 7985/16193 cut-off events. For 26319/27231 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 150904 event pairs, 849 based on Foata normal form. 371/16119 useless extension candidates. Maximal degree in co-relation 48052. Up to 3933 conditions per place. [2022-11-02 20:50:15,329 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 103 selfloop transitions, 24 changer transitions 3/242 dead transitions. [2022-11-02 20:50:15,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 242 transitions, 1323 flow [2022-11-02 20:50:15,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:50:15,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:50:15,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1319 transitions. [2022-11-02 20:50:15,334 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8816844919786097 [2022-11-02 20:50:15,334 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1319 transitions. [2022-11-02 20:50:15,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1319 transitions. [2022-11-02 20:50:15,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:15,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1319 transitions. [2022-11-02 20:50:15,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 119.9090909090909) internal successors, (1319), 11 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:15,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:15,342 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:15,342 INFO L175 Difference]: Start difference. First operand has 151 places, 144 transitions, 577 flow. Second operand 11 states and 1319 transitions. [2022-11-02 20:50:15,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 242 transitions, 1323 flow [2022-11-02 20:50:15,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 242 transitions, 1295 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-11-02 20:50:15,410 INFO L231 Difference]: Finished difference. Result has 167 places, 159 transitions, 772 flow [2022-11-02 20:50:15,410 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=772, PETRI_PLACES=167, PETRI_TRANSITIONS=159} [2022-11-02 20:50:15,414 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 24 predicate places. [2022-11-02 20:50:15,414 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 159 transitions, 772 flow [2022-11-02 20:50:15,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:15,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:15,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:15,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:50:15,416 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:15,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1321698760, now seen corresponding path program 1 times [2022-11-02 20:50:15,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:15,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599915807] [2022-11-02 20:50:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:15,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:15,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:15,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599915807] [2022-11-02 20:50:15,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599915807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:15,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:15,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:50:15,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366697360] [2022-11-02 20:50:15,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:15,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:50:15,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:15,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:50:15,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:50:15,822 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-11-02 20:50:15,824 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 159 transitions, 772 flow. Second operand has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:15,824 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:15,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-11-02 20:50:15,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:19,713 INFO L130 PetriNetUnfolder]: 7210/14477 cut-off events. [2022-11-02 20:50:19,713 INFO L131 PetriNetUnfolder]: For 44745/45686 co-relation queries the response was YES. [2022-11-02 20:50:19,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51795 conditions, 14477 events. 7210/14477 cut-off events. For 44745/45686 co-relation queries the response was YES. Maximal size of possible extension queue 905. Compared 134063 event pairs, 726 based on Foata normal form. 207/14288 useless extension candidates. Maximal degree in co-relation 51712. Up to 3745 conditions per place. [2022-11-02 20:50:19,828 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 97 selfloop transitions, 42 changer transitions 47/284 dead transitions. [2022-11-02 20:50:19,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 284 transitions, 1898 flow [2022-11-02 20:50:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:50:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:50:19,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1682 transitions. [2022-11-02 20:50:19,832 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8834033613445378 [2022-11-02 20:50:19,832 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1682 transitions. [2022-11-02 20:50:19,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1682 transitions. [2022-11-02 20:50:19,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:19,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1682 transitions. [2022-11-02 20:50:19,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 120.14285714285714) internal successors, (1682), 14 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:19,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 136.0) internal successors, (2040), 15 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:19,842 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 136.0) internal successors, (2040), 15 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:19,842 INFO L175 Difference]: Start difference. First operand has 167 places, 159 transitions, 772 flow. Second operand 14 states and 1682 transitions. [2022-11-02 20:50:19,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 284 transitions, 1898 flow [2022-11-02 20:50:20,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 284 transitions, 1805 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-11-02 20:50:20,861 INFO L231 Difference]: Finished difference. Result has 182 places, 169 transitions, 1013 flow [2022-11-02 20:50:20,862 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1013, PETRI_PLACES=182, PETRI_TRANSITIONS=169} [2022-11-02 20:50:20,863 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 39 predicate places. [2022-11-02 20:50:20,863 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 169 transitions, 1013 flow [2022-11-02 20:50:20,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 111.125) internal successors, (889), 8 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:20,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:20,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:20,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:50:20,864 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:20,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:20,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1438608436, now seen corresponding path program 1 times [2022-11-02 20:50:20,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:20,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499922065] [2022-11-02 20:50:20,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:20,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:21,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:21,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:21,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499922065] [2022-11-02 20:50:21,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499922065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:21,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:21,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:50:21,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273338312] [2022-11-02 20:50:21,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:21,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:50:21,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:21,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:50:21,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:21,198 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 136 [2022-11-02 20:50:21,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 169 transitions, 1013 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:21,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:21,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 136 [2022-11-02 20:50:21,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:23,514 INFO L130 PetriNetUnfolder]: 2787/10263 cut-off events. [2022-11-02 20:50:23,514 INFO L131 PetriNetUnfolder]: For 37141/38131 co-relation queries the response was YES. [2022-11-02 20:50:23,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34908 conditions, 10263 events. 2787/10263 cut-off events. For 37141/38131 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 128903 event pairs, 170 based on Foata normal form. 51/9739 useless extension candidates. Maximal degree in co-relation 34816. Up to 2001 conditions per place. [2022-11-02 20:50:23,644 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 61 selfloop transitions, 18 changer transitions 37/250 dead transitions. [2022-11-02 20:50:23,645 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 250 transitions, 1679 flow [2022-11-02 20:50:23,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:50:23,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:50:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1253 transitions. [2022-11-02 20:50:23,649 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8375668449197861 [2022-11-02 20:50:23,649 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1253 transitions. [2022-11-02 20:50:23,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1253 transitions. [2022-11-02 20:50:23,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:23,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1253 transitions. [2022-11-02 20:50:23,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.9090909090909) internal successors, (1253), 11 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:23,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:23,658 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:23,658 INFO L175 Difference]: Start difference. First operand has 182 places, 169 transitions, 1013 flow. Second operand 11 states and 1253 transitions. [2022-11-02 20:50:23,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 250 transitions, 1679 flow [2022-11-02 20:50:25,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 250 transitions, 1312 flow, removed 142 selfloop flow, removed 15 redundant places. [2022-11-02 20:50:25,420 INFO L231 Difference]: Finished difference. Result has 180 places, 180 transitions, 874 flow [2022-11-02 20:50:25,421 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=874, PETRI_PLACES=180, PETRI_TRANSITIONS=180} [2022-11-02 20:50:25,421 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 37 predicate places. [2022-11-02 20:50:25,421 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 180 transitions, 874 flow [2022-11-02 20:50:25,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:25,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:25,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:25,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:50:25,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:25,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:25,423 INFO L85 PathProgramCache]: Analyzing trace with hash -994621190, now seen corresponding path program 2 times [2022-11-02 20:50:25,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:25,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4946042] [2022-11-02 20:50:25,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:25,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:25,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:25,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4946042] [2022-11-02 20:50:25,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4946042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:25,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:25,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:50:25,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443168163] [2022-11-02 20:50:25,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:25,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:50:25,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:25,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:50:25,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:50:25,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 136 [2022-11-02 20:50:25,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 180 transitions, 874 flow. Second operand has 9 states, 9 states have (on average 111.11111111111111) internal successors, (1000), 9 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:25,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:25,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 136 [2022-11-02 20:50:25,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:30,783 INFO L130 PetriNetUnfolder]: 10158/20553 cut-off events. [2022-11-02 20:50:30,784 INFO L131 PetriNetUnfolder]: For 47899/51549 co-relation queries the response was YES. [2022-11-02 20:50:30,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62059 conditions, 20553 events. 10158/20553 cut-off events. For 47899/51549 co-relation queries the response was YES. Maximal size of possible extension queue 1307. Compared 206568 event pairs, 758 based on Foata normal form. 276/20389 useless extension candidates. Maximal degree in co-relation 62024. Up to 2715 conditions per place. [2022-11-02 20:50:30,980 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 101 selfloop transitions, 47 changer transitions 37/292 dead transitions. [2022-11-02 20:50:30,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 292 transitions, 1925 flow [2022-11-02 20:50:30,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:50:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:50:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1994 transitions. [2022-11-02 20:50:30,986 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8624567474048442 [2022-11-02 20:50:30,987 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1994 transitions. [2022-11-02 20:50:30,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1994 transitions. [2022-11-02 20:50:30,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:30,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1994 transitions. [2022-11-02 20:50:30,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 117.29411764705883) internal successors, (1994), 17 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:30,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 136.0) internal successors, (2448), 18 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:31,000 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 136.0) internal successors, (2448), 18 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:31,000 INFO L175 Difference]: Start difference. First operand has 180 places, 180 transitions, 874 flow. Second operand 17 states and 1994 transitions. [2022-11-02 20:50:31,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 292 transitions, 1925 flow [2022-11-02 20:50:32,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 292 transitions, 1731 flow, removed 97 selfloop flow, removed 9 redundant places. [2022-11-02 20:50:32,212 INFO L231 Difference]: Finished difference. Result has 188 places, 179 transitions, 929 flow [2022-11-02 20:50:32,212 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=929, PETRI_PLACES=188, PETRI_TRANSITIONS=179} [2022-11-02 20:50:32,213 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 45 predicate places. [2022-11-02 20:50:32,213 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 179 transitions, 929 flow [2022-11-02 20:50:32,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 111.11111111111111) internal successors, (1000), 9 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:32,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:32,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:32,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:50:32,215 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:32,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1111431011, now seen corresponding path program 1 times [2022-11-02 20:50:32,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:32,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327260279] [2022-11-02 20:50:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:32,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:33,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:33,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327260279] [2022-11-02 20:50:33,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327260279] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:33,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:33,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:50:33,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526984789] [2022-11-02 20:50:33,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:33,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:50:33,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:33,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:50:33,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:50:33,915 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 136 [2022-11-02 20:50:33,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 179 transitions, 929 flow. Second operand has 13 states, 13 states have (on average 106.07692307692308) internal successors, (1379), 13 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:33,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:33,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 136 [2022-11-02 20:50:33,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:36,009 INFO L130 PetriNetUnfolder]: 3684/13069 cut-off events. [2022-11-02 20:50:36,010 INFO L131 PetriNetUnfolder]: For 25188/26870 co-relation queries the response was YES. [2022-11-02 20:50:36,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38626 conditions, 13069 events. 3684/13069 cut-off events. For 25188/26870 co-relation queries the response was YES. Maximal size of possible extension queue 1471. Compared 177634 event pairs, 95 based on Foata normal form. 11/12298 useless extension candidates. Maximal degree in co-relation 38529. Up to 1459 conditions per place. [2022-11-02 20:50:36,175 INFO L137 encePairwiseOnDemand]: 124/136 looper letters, 44 selfloop transitions, 12 changer transitions 6/211 dead transitions. [2022-11-02 20:50:36,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 211 transitions, 1187 flow [2022-11-02 20:50:36,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:50:36,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:50:36,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1302 transitions. [2022-11-02 20:50:36,179 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7977941176470589 [2022-11-02 20:50:36,180 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1302 transitions. [2022-11-02 20:50:36,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1302 transitions. [2022-11-02 20:50:36,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:36,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1302 transitions. [2022-11-02 20:50:36,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 108.5) internal successors, (1302), 12 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:36,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 136.0) internal successors, (1768), 13 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:36,189 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 136.0) internal successors, (1768), 13 states have internal predecessors, (1768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:36,190 INFO L175 Difference]: Start difference. First operand has 188 places, 179 transitions, 929 flow. Second operand 12 states and 1302 transitions. [2022-11-02 20:50:36,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 211 transitions, 1187 flow [2022-11-02 20:50:37,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 211 transitions, 1070 flow, removed 25 selfloop flow, removed 15 redundant places. [2022-11-02 20:50:37,848 INFO L231 Difference]: Finished difference. Result has 187 places, 186 transitions, 920 flow [2022-11-02 20:50:37,848 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=920, PETRI_PLACES=187, PETRI_TRANSITIONS=186} [2022-11-02 20:50:37,849 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 44 predicate places. [2022-11-02 20:50:37,849 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 186 transitions, 920 flow [2022-11-02 20:50:37,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 106.07692307692308) internal successors, (1379), 13 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:37,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:37,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:37,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:50:37,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash -705344745, now seen corresponding path program 2 times [2022-11-02 20:50:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:37,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774104660] [2022-11-02 20:50:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:37,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:39,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:39,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774104660] [2022-11-02 20:50:39,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774104660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:39,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:39,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:50:39,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724804275] [2022-11-02 20:50:39,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:39,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:50:39,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:50:39,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:50:39,187 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 136 [2022-11-02 20:50:39,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 186 transitions, 920 flow. Second operand has 11 states, 11 states have (on average 107.36363636363636) internal successors, (1181), 11 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:39,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:39,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 136 [2022-11-02 20:50:39,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:50:43,030 INFO L130 PetriNetUnfolder]: 5788/20216 cut-off events. [2022-11-02 20:50:43,031 INFO L131 PetriNetUnfolder]: For 28029/29985 co-relation queries the response was YES. [2022-11-02 20:50:43,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54474 conditions, 20216 events. 5788/20216 cut-off events. For 28029/29985 co-relation queries the response was YES. Maximal size of possible extension queue 2324. Compared 292225 event pairs, 89 based on Foata normal form. 63/19098 useless extension candidates. Maximal degree in co-relation 54443. Up to 2035 conditions per place. [2022-11-02 20:50:43,299 INFO L137 encePairwiseOnDemand]: 125/136 looper letters, 49 selfloop transitions, 14 changer transitions 10/223 dead transitions. [2022-11-02 20:50:43,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 223 transitions, 1283 flow [2022-11-02 20:50:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:50:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:50:43,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1209 transitions. [2022-11-02 20:50:43,305 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8081550802139037 [2022-11-02 20:50:43,305 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1209 transitions. [2022-11-02 20:50:43,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1209 transitions. [2022-11-02 20:50:43,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:50:43,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1209 transitions. [2022-11-02 20:50:43,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 109.9090909090909) internal successors, (1209), 11 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,313 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 136.0) internal successors, (1632), 12 states have internal predecessors, (1632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:43,313 INFO L175 Difference]: Start difference. First operand has 187 places, 186 transitions, 920 flow. Second operand 11 states and 1209 transitions. [2022-11-02 20:50:43,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 223 transitions, 1283 flow [2022-11-02 20:50:47,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 223 transitions, 1259 flow, removed 5 selfloop flow, removed 8 redundant places. [2022-11-02 20:50:47,804 INFO L231 Difference]: Finished difference. Result has 193 places, 197 transitions, 1052 flow [2022-11-02 20:50:47,804 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=136, PETRI_DIFFERENCE_MINUEND_FLOW=903, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1052, PETRI_PLACES=193, PETRI_TRANSITIONS=197} [2022-11-02 20:50:47,805 INFO L287 CegarLoopForPetriNet]: 143 programPoint places, 50 predicate places. [2022-11-02 20:50:47,805 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 197 transitions, 1052 flow [2022-11-02 20:50:47,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.36363636363636) internal successors, (1181), 11 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:47,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:50:47,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:50:47,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:50:47,807 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-02 20:50:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:50:47,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1691632887, now seen corresponding path program 3 times [2022-11-02 20:50:47,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:50:47,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219402647] [2022-11-02 20:50:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:50:47,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:50:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:50:48,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:50:48,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:50:48,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219402647] [2022-11-02 20:50:48,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219402647] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:50:48,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:50:48,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:50:48,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869746115] [2022-11-02 20:50:48,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:50:48,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:50:48,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:50:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:50:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:50:48,210 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 136 [2022-11-02 20:50:48,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 197 transitions, 1052 flow. Second operand has 7 states, 7 states have (on average 113.0) internal successors, (791), 7 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:50:48,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:50:48,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 136 [2022-11-02 20:50:48,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand