./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/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_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/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_c6cbd70e-9623-4606-914e-c8dddbe54384/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 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 --- 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 19:48:55,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 19:48:55,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 19:48:55,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 19:48:55,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 19:48:55,752 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 19:48:55,755 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 19:48:55,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 19:48:55,763 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 19:48:55,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 19:48:55,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 19:48:55,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 19:48:55,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 19:48:55,781 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 19:48:55,783 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 19:48:55,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 19:48:55,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 19:48:55,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 19:48:55,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 19:48:55,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 19:48:55,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 19:48:55,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 19:48:55,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 19:48:55,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 19:48:55,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 19:48:55,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 19:48:55,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 19:48:55,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 19:48:55,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 19:48:55,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 19:48:55,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 19:48:55,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 19:48:55,828 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 19:48:55,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 19:48:55,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 19:48:55,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 19:48:55,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 19:48:55,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 19:48:55,833 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 19:48:55,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 19:48:55,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 19:48:55,836 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 19:48:55,888 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 19:48:55,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 19:48:55,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 19:48:55,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 19:48:55,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 19:48:55,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 19:48:55,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 19:48:55,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 19:48:55,893 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 19:48:55,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 19:48:55,895 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 19:48:55,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 19:48:55,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 19:48:55,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 19:48:55,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 19:48:55,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 19:48:55,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 19:48:55,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 19:48:55,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 19:48:55,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 19:48:55,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 19:48:55,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 19:48:55,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 19:48:55,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 19:48:55,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:48:55,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 19:48:55,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 19:48:55,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 19:48:55,901 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 19:48:55,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 19:48:55,902 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 19:48:55,902 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 19:48:55,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 19:48:55,903 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_c6cbd70e-9623-4606-914e-c8dddbe54384/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4755329f7559a8be1422f8772c1ed30abe185c2742a237de140cc196ec4e9010 [2022-11-02 19:48:56,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 19:48:56,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 19:48:56,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 19:48:56,322 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 19:48:56,323 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 19:48:56,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-11-02 19:48:56,408 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/data/e8e97e6a8/9aa6d4b2e7a14b329601267b5c80e9e2/FLAG3e35b5914 [2022-11-02 19:48:57,067 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 19:48:57,068 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c [2022-11-02 19:48:57,075 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/data/e8e97e6a8/9aa6d4b2e7a14b329601267b5c80e9e2/FLAG3e35b5914 [2022-11-02 19:48:57,396 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/data/e8e97e6a8/9aa6d4b2e7a14b329601267b5c80e9e2 [2022-11-02 19:48:57,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 19:48:57,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 19:48:57,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 19:48:57,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 19:48:57,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 19:48:57,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@de2ba4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57, skipping insertion in model container [2022-11-02 19:48:57,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 19:48:57,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 19:48:57,716 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_c6cbd70e-9623-4606-914e-c8dddbe54384/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c[2808,2821] [2022-11-02 19:48:57,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:48:57,736 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 19:48:57,769 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_c6cbd70e-9623-4606-914e-c8dddbe54384/sv-benchmarks/c/weaver/unroll-cond-4.wvr.c[2808,2821] [2022-11-02 19:48:57,773 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 19:48:57,790 INFO L208 MainTranslator]: Completed translation [2022-11-02 19:48:57,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57 WrapperNode [2022-11-02 19:48:57,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 19:48:57,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 19:48:57,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 19:48:57,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 19:48:57,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,812 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,844 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 183 [2022-11-02 19:48:57,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 19:48:57,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 19:48:57,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 19:48:57,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 19:48:57,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,879 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,884 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 19:48:57,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 19:48:57,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 19:48:57,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 19:48:57,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (1/1) ... [2022-11-02 19:48:57,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 19:48:57,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:48:57,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 19:48:57,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 19:48:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 19:48:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 19:48:57,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 19:48:57,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 19:48:57,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 19:48:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 19:48:57,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 19:48:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 19:48:57,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 19:48:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 19:48:57,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 19:48:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 19:48:57,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 19:48:57,993 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 19:48:58,193 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 19:48:58,195 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 19:48:58,738 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 19:48:58,755 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 19:48:58,760 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 19:48:58,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:48:58 BoogieIcfgContainer [2022-11-02 19:48:58,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 19:48:58,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 19:48:58,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 19:48:58,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 19:48:58,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 07:48:57" (1/3) ... [2022-11-02 19:48:58,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649d0ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:48:58, skipping insertion in model container [2022-11-02 19:48:58,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 07:48:57" (2/3) ... [2022-11-02 19:48:58,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@649d0ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 07:48:58, skipping insertion in model container [2022-11-02 19:48:58,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 07:48:58" (3/3) ... [2022-11-02 19:48:58,777 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2022-11-02 19:48:58,788 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 19:48:58,801 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 19:48:58,801 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 19:48:58,801 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 19:48:58,915 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-02 19:48:58,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 239 transitions, 494 flow [2022-11-02 19:48:59,176 INFO L130 PetriNetUnfolder]: 21/237 cut-off events. [2022-11-02 19:48:59,177 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 19:48:59,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 237 events. 21/237 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 413 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 141. Up to 2 conditions per place. [2022-11-02 19:48:59,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 239 transitions, 494 flow [2022-11-02 19:48:59,206 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 228 transitions, 468 flow [2022-11-02 19:48:59,234 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 19:48:59,244 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;@4689fc67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 19:48:59,245 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-02 19:48:59,349 INFO L130 PetriNetUnfolder]: 18/198 cut-off events. [2022-11-02 19:48:59,349 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-02 19:48:59,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:48:59,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:48:59,351 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:48:59,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:48:59,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1600668032, now seen corresponding path program 1 times [2022-11-02 19:48:59,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:48:59,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499969192] [2022-11-02 19:48:59,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:48:59,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:48:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:00,518 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 19:49:00,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:00,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499969192] [2022-11-02 19:49:00,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499969192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:00,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:00,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 19:49:00,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402327507] [2022-11-02 19:49:00,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 19:49:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 19:49:00,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-02 19:49:00,631 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 239 [2022-11-02 19:49:00,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 228 transitions, 468 flow. Second operand has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 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 19:49:00,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:00,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 239 [2022-11-02 19:49:00,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:01,021 INFO L130 PetriNetUnfolder]: 161/785 cut-off events. [2022-11-02 19:49:01,022 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-11-02 19:49:01,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1095 conditions, 785 events. 161/785 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3648 event pairs, 46 based on Foata normal form. 68/729 useless extension candidates. Maximal degree in co-relation 967. Up to 216 conditions per place. [2022-11-02 19:49:01,035 INFO L137 encePairwiseOnDemand]: 219/239 looper letters, 40 selfloop transitions, 4 changer transitions 4/226 dead transitions. [2022-11-02 19:49:01,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 226 transitions, 558 flow [2022-11-02 19:49:01,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 19:49:01,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 19:49:01,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 835 transitions. [2022-11-02 19:49:01,068 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8734309623430963 [2022-11-02 19:49:01,069 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 835 transitions. [2022-11-02 19:49:01,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 835 transitions. [2022-11-02 19:49:01,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:01,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 835 transitions. [2022-11-02 19:49:01,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 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 19:49:01,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 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 19:49:01,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 239.0) internal successors, (1195), 5 states have internal predecessors, (1195), 0 states have call successors, (0), 0 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 19:49:01,098 INFO L175 Difference]: Start difference. First operand has 214 places, 228 transitions, 468 flow. Second operand 4 states and 835 transitions. [2022-11-02 19:49:01,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 226 transitions, 558 flow [2022-11-02 19:49:01,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 226 transitions, 546 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 19:49:01,111 INFO L231 Difference]: Finished difference. Result has 215 places, 212 transitions, 449 flow [2022-11-02 19:49:01,113 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=449, PETRI_PLACES=215, PETRI_TRANSITIONS=212} [2022-11-02 19:49:01,117 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 1 predicate places. [2022-11-02 19:49:01,118 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 212 transitions, 449 flow [2022-11-02 19:49:01,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 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 19:49:01,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:01,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:01,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 19:49:01,120 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:01,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:01,121 INFO L85 PathProgramCache]: Analyzing trace with hash 724912626, now seen corresponding path program 1 times [2022-11-02 19:49:01,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:01,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360655442] [2022-11-02 19:49:01,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:01,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:01,876 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 19:49:01,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:01,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360655442] [2022-11-02 19:49:01,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360655442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:01,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:01,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:49:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78467164] [2022-11-02 19:49:01,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:01,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:49:01,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:01,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:49:01,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:49:01,891 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-11-02 19:49:01,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 212 transitions, 449 flow. Second operand has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 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 19:49:01,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:01,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-11-02 19:49:01,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:02,704 INFO L130 PetriNetUnfolder]: 366/1824 cut-off events. [2022-11-02 19:49:02,704 INFO L131 PetriNetUnfolder]: For 144/144 co-relation queries the response was YES. [2022-11-02 19:49:02,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1824 events. 366/1824 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 12840 event pairs, 141 based on Foata normal form. 2/1626 useless extension candidates. Maximal degree in co-relation 2031. Up to 363 conditions per place. [2022-11-02 19:49:02,720 INFO L137 encePairwiseOnDemand]: 231/239 looper letters, 94 selfloop transitions, 7 changer transitions 0/276 dead transitions. [2022-11-02 19:49:02,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 276 transitions, 829 flow [2022-11-02 19:49:02,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:49:02,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 19:49:02,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1227 transitions. [2022-11-02 19:49:02,724 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8556485355648535 [2022-11-02 19:49:02,725 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1227 transitions. [2022-11-02 19:49:02,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1227 transitions. [2022-11-02 19:49:02,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:02,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1227 transitions. [2022-11-02 19:49:02,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 0 states have call successors, (0), 0 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 19:49:02,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 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 19:49:02,737 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 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 19:49:02,737 INFO L175 Difference]: Start difference. First operand has 215 places, 212 transitions, 449 flow. Second operand 6 states and 1227 transitions. [2022-11-02 19:49:02,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 276 transitions, 829 flow [2022-11-02 19:49:02,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 276 transitions, 819 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 19:49:02,750 INFO L231 Difference]: Finished difference. Result has 218 places, 216 transitions, 490 flow [2022-11-02 19:49:02,750 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=490, PETRI_PLACES=218, PETRI_TRANSITIONS=216} [2022-11-02 19:49:02,751 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-11-02 19:49:02,752 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 216 transitions, 490 flow [2022-11-02 19:49:02,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.0) internal successors, (960), 5 states have internal predecessors, (960), 0 states have call successors, (0), 0 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 19:49:02,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:02,753 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 19:49:02,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 19:49:02,753 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:02,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:02,754 INFO L85 PathProgramCache]: Analyzing trace with hash 269032412, now seen corresponding path program 2 times [2022-11-02 19:49:02,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:02,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300245322] [2022-11-02 19:49:02,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:02,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:03,169 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 19:49:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:03,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300245322] [2022-11-02 19:49:03,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300245322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:03,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:03,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:49:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861505454] [2022-11-02 19:49:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:03,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:49:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:03,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:49:03,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:49:03,174 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 239 [2022-11-02 19:49:03,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 216 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 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 19:49:03,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:03,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 239 [2022-11-02 19:49:03,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:03,633 INFO L130 PetriNetUnfolder]: 222/1265 cut-off events. [2022-11-02 19:49:03,633 INFO L131 PetriNetUnfolder]: For 252/307 co-relation queries the response was YES. [2022-11-02 19:49:03,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1912 conditions, 1265 events. 222/1265 cut-off events. For 252/307 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 8708 event pairs, 119 based on Foata normal form. 55/1226 useless extension candidates. Maximal degree in co-relation 1252. Up to 296 conditions per place. [2022-11-02 19:49:03,642 INFO L137 encePairwiseOnDemand]: 230/239 looper letters, 54 selfloop transitions, 10 changer transitions 0/242 dead transitions. [2022-11-02 19:49:03,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 242 transitions, 705 flow [2022-11-02 19:49:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:49:03,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 19:49:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1394 transitions. [2022-11-02 19:49:03,646 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8332337118947998 [2022-11-02 19:49:03,647 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1394 transitions. [2022-11-02 19:49:03,647 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1394 transitions. [2022-11-02 19:49:03,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:03,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1394 transitions. [2022-11-02 19:49:03,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 199.14285714285714) internal successors, (1394), 7 states have internal predecessors, (1394), 0 states have call successors, (0), 0 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 19:49:03,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 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 19:49:03,656 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 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 19:49:03,656 INFO L175 Difference]: Start difference. First operand has 218 places, 216 transitions, 490 flow. Second operand 7 states and 1394 transitions. [2022-11-02 19:49:03,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 242 transitions, 705 flow [2022-11-02 19:49:03,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 242 transitions, 699 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:49:03,664 INFO L231 Difference]: Finished difference. Result has 226 places, 219 transitions, 531 flow [2022-11-02 19:49:03,664 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=484, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=531, PETRI_PLACES=226, PETRI_TRANSITIONS=219} [2022-11-02 19:49:03,667 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 12 predicate places. [2022-11-02 19:49:03,667 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 219 transitions, 531 flow [2022-11-02 19:49:03,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.5) internal successors, (1161), 6 states have internal predecessors, (1161), 0 states have call successors, (0), 0 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 19:49:03,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:03,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:03,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 19:49:03,669 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:03,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:03,670 INFO L85 PathProgramCache]: Analyzing trace with hash -445000328, now seen corresponding path program 1 times [2022-11-02 19:49:03,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:03,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957922407] [2022-11-02 19:49:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:04,174 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 19:49:04,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:04,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957922407] [2022-11-02 19:49:04,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957922407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:04,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:04,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:49:04,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090073403] [2022-11-02 19:49:04,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:04,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:49:04,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:04,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:49:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:49:04,187 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-11-02 19:49:04,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 219 transitions, 531 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 19:49:04,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:04,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-11-02 19:49:04,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:04,902 INFO L130 PetriNetUnfolder]: 498/2523 cut-off events. [2022-11-02 19:49:04,903 INFO L131 PetriNetUnfolder]: For 709/709 co-relation queries the response was YES. [2022-11-02 19:49:04,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4072 conditions, 2523 events. 498/2523 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 19646 event pairs, 212 based on Foata normal form. 11/2359 useless extension candidates. Maximal degree in co-relation 3235. Up to 532 conditions per place. [2022-11-02 19:49:04,925 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 82 selfloop transitions, 11 changer transitions 0/269 dead transitions. [2022-11-02 19:49:04,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 269 transitions, 879 flow [2022-11-02 19:49:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 19:49:04,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 19:49:04,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1408 transitions. [2022-11-02 19:49:04,930 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8416019127316199 [2022-11-02 19:49:04,930 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1408 transitions. [2022-11-02 19:49:04,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1408 transitions. [2022-11-02 19:49:04,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:04,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1408 transitions. [2022-11-02 19:49:04,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.14285714285714) internal successors, (1408), 7 states have internal predecessors, (1408), 0 states have call successors, (0), 0 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 19:49:04,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 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 19:49:04,943 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 239.0) internal successors, (1912), 8 states have internal predecessors, (1912), 0 states have call successors, (0), 0 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 19:49:04,943 INFO L175 Difference]: Start difference. First operand has 226 places, 219 transitions, 531 flow. Second operand 7 states and 1408 transitions. [2022-11-02 19:49:04,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 269 transitions, 879 flow [2022-11-02 19:49:04,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 269 transitions, 866 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 19:49:04,959 INFO L231 Difference]: Finished difference. Result has 233 places, 224 transitions, 590 flow [2022-11-02 19:49:04,960 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=590, PETRI_PLACES=233, PETRI_TRANSITIONS=224} [2022-11-02 19:49:04,962 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 19 predicate places. [2022-11-02 19:49:04,962 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 224 transitions, 590 flow [2022-11-02 19:49:04,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 19:49:04,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:04,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:04,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 19:49:04,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:04,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:04,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1946681628, now seen corresponding path program 2 times [2022-11-02 19:49:04,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:04,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91501747] [2022-11-02 19:49:04,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:04,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:05,416 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 19:49:05,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:05,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91501747] [2022-11-02 19:49:05,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91501747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:05,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:05,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:49:05,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856052025] [2022-11-02 19:49:05,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:05,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:49:05,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:05,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:49:05,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:49:05,421 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-11-02 19:49:05,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 224 transitions, 590 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 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 19:49:05,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:05,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-11-02 19:49:05,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:06,130 INFO L130 PetriNetUnfolder]: 531/2673 cut-off events. [2022-11-02 19:49:06,130 INFO L131 PetriNetUnfolder]: For 1682/1692 co-relation queries the response was YES. [2022-11-02 19:49:06,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4658 conditions, 2673 events. 531/2673 cut-off events. For 1682/1692 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 21145 event pairs, 299 based on Foata normal form. 4/2484 useless extension candidates. Maximal degree in co-relation 3552. Up to 477 conditions per place. [2022-11-02 19:49:06,157 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 85 selfloop transitions, 15 changer transitions 0/276 dead transitions. [2022-11-02 19:49:06,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 276 transitions, 1018 flow [2022-11-02 19:49:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:49:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 19:49:06,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2022-11-02 19:49:06,161 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8610878661087866 [2022-11-02 19:49:06,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2022-11-02 19:49:06,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2022-11-02 19:49:06,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:06,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2022-11-02 19:49:06,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 0 states have call successors, (0), 0 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 19:49:06,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 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 19:49:06,169 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 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 19:49:06,169 INFO L175 Difference]: Start difference. First operand has 233 places, 224 transitions, 590 flow. Second operand 5 states and 1029 transitions. [2022-11-02 19:49:06,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 276 transitions, 1018 flow [2022-11-02 19:49:06,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 276 transitions, 999 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 19:49:06,182 INFO L231 Difference]: Finished difference. Result has 238 places, 231 transitions, 710 flow [2022-11-02 19:49:06,183 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=710, PETRI_PLACES=238, PETRI_TRANSITIONS=231} [2022-11-02 19:49:06,184 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 24 predicate places. [2022-11-02 19:49:06,184 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 231 transitions, 710 flow [2022-11-02 19:49:06,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 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 19:49:06,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:06,186 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:06,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 19:49:06,186 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash -768224580, now seen corresponding path program 3 times [2022-11-02 19:49:06,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63156642] [2022-11-02 19:49:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:06,692 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 19:49:06,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:06,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63156642] [2022-11-02 19:49:06,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63156642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:06,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:06,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:49:06,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576748666] [2022-11-02 19:49:06,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:06,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:49:06,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:49:06,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:49:06,699 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-11-02 19:49:06,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 231 transitions, 710 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 19:49:06,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:06,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-11-02 19:49:06,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:07,456 INFO L130 PetriNetUnfolder]: 549/2783 cut-off events. [2022-11-02 19:49:07,456 INFO L131 PetriNetUnfolder]: For 2799/2808 co-relation queries the response was YES. [2022-11-02 19:49:07,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5091 conditions, 2783 events. 549/2783 cut-off events. For 2799/2808 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 22264 event pairs, 303 based on Foata normal form. 12/2596 useless extension candidates. Maximal degree in co-relation 3689. Up to 485 conditions per place. [2022-11-02 19:49:07,486 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 91 selfloop transitions, 16 changer transitions 0/283 dead transitions. [2022-11-02 19:49:07,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 283 transitions, 1113 flow [2022-11-02 19:49:07,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:49:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 19:49:07,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1225 transitions. [2022-11-02 19:49:07,491 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8542538354253836 [2022-11-02 19:49:07,491 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1225 transitions. [2022-11-02 19:49:07,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1225 transitions. [2022-11-02 19:49:07,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:07,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1225 transitions. [2022-11-02 19:49:07,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.16666666666666) internal successors, (1225), 6 states have internal predecessors, (1225), 0 states have call successors, (0), 0 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 19:49:07,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 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 19:49:07,500 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 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 19:49:07,501 INFO L175 Difference]: Start difference. First operand has 238 places, 231 transitions, 710 flow. Second operand 6 states and 1225 transitions. [2022-11-02 19:49:07,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 283 transitions, 1113 flow [2022-11-02 19:49:07,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 283 transitions, 1086 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-02 19:49:07,518 INFO L231 Difference]: Finished difference. Result has 245 places, 233 transitions, 756 flow [2022-11-02 19:49:07,519 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=756, PETRI_PLACES=245, PETRI_TRANSITIONS=233} [2022-11-02 19:49:07,522 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 31 predicate places. [2022-11-02 19:49:07,523 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 233 transitions, 756 flow [2022-11-02 19:49:07,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 19:49:07,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:07,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 19:49:07,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:07,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash 315615160, now seen corresponding path program 4 times [2022-11-02 19:49:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:07,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310776020] [2022-11-02 19:49:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:07,941 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 19:49:07,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:07,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310776020] [2022-11-02 19:49:07,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310776020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:07,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:07,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 19:49:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572641191] [2022-11-02 19:49:07,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:07,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 19:49:07,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 19:49:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 19:49:07,953 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-11-02 19:49:07,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 233 transitions, 756 flow. Second operand has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 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 19:49:07,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:07,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-11-02 19:49:07,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:08,700 INFO L130 PetriNetUnfolder]: 547/2773 cut-off events. [2022-11-02 19:49:08,701 INFO L131 PetriNetUnfolder]: For 3179/3182 co-relation queries the response was YES. [2022-11-02 19:49:08,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5168 conditions, 2773 events. 547/2773 cut-off events. For 3179/3182 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 22075 event pairs, 323 based on Foata normal form. 5/2571 useless extension candidates. Maximal degree in co-relation 4723. Up to 811 conditions per place. [2022-11-02 19:49:08,733 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 65 selfloop transitions, 19 changer transitions 0/260 dead transitions. [2022-11-02 19:49:08,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 260 transitions, 1075 flow [2022-11-02 19:49:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 19:49:08,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 19:49:08,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2022-11-02 19:49:08,738 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8460251046025105 [2022-11-02 19:49:08,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2022-11-02 19:49:08,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2022-11-02 19:49:08,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:08,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2022-11-02 19:49:08,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 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 19:49:08,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 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 19:49:08,746 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 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 19:49:08,746 INFO L175 Difference]: Start difference. First operand has 245 places, 233 transitions, 756 flow. Second operand 5 states and 1011 transitions. [2022-11-02 19:49:08,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 260 transitions, 1075 flow [2022-11-02 19:49:08,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 260 transitions, 1045 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 19:49:08,763 INFO L231 Difference]: Finished difference. Result has 250 places, 240 transitions, 882 flow [2022-11-02 19:49:08,764 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=882, PETRI_PLACES=250, PETRI_TRANSITIONS=240} [2022-11-02 19:49:08,765 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 36 predicate places. [2022-11-02 19:49:08,765 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 240 transitions, 882 flow [2022-11-02 19:49:08,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 192.4) internal successors, (962), 5 states have internal predecessors, (962), 0 states have call successors, (0), 0 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 19:49:08,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:08,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:08,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 19:49:08,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:08,767 INFO L85 PathProgramCache]: Analyzing trace with hash -922629982, now seen corresponding path program 5 times [2022-11-02 19:49:08,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:08,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481983265] [2022-11-02 19:49:08,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:08,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:49:09,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:09,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481983265] [2022-11-02 19:49:09,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481983265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:09,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 19:49:09,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 19:49:09,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961297092] [2022-11-02 19:49:09,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:09,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 19:49:09,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:09,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 19:49:09,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 19:49:09,181 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 239 [2022-11-02 19:49:09,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 240 transitions, 882 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 19:49:09,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:09,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 239 [2022-11-02 19:49:09,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:09,936 INFO L130 PetriNetUnfolder]: 525/2656 cut-off events. [2022-11-02 19:49:09,936 INFO L131 PetriNetUnfolder]: For 3587/3588 co-relation queries the response was YES. [2022-11-02 19:49:09,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5002 conditions, 2656 events. 525/2656 cut-off events. For 3587/3588 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 20918 event pairs, 268 based on Foata normal form. 12/2476 useless extension candidates. Maximal degree in co-relation 4576. Up to 738 conditions per place. [2022-11-02 19:49:09,967 INFO L137 encePairwiseOnDemand]: 232/239 looper letters, 74 selfloop transitions, 20 changer transitions 0/270 dead transitions. [2022-11-02 19:49:09,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 270 transitions, 1171 flow [2022-11-02 19:49:09,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 19:49:09,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 19:49:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1211 transitions. [2022-11-02 19:49:09,973 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8444909344490934 [2022-11-02 19:49:09,973 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1211 transitions. [2022-11-02 19:49:09,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1211 transitions. [2022-11-02 19:49:09,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:09,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1211 transitions. [2022-11-02 19:49:09,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 201.83333333333334) internal successors, (1211), 6 states have internal predecessors, (1211), 0 states have call successors, (0), 0 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 19:49:09,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 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 19:49:09,983 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 239.0) internal successors, (1673), 7 states have internal predecessors, (1673), 0 states have call successors, (0), 0 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 19:49:09,983 INFO L175 Difference]: Start difference. First operand has 250 places, 240 transitions, 882 flow. Second operand 6 states and 1211 transitions. [2022-11-02 19:49:09,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 270 transitions, 1171 flow [2022-11-02 19:49:09,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 270 transitions, 1130 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-11-02 19:49:10,002 INFO L231 Difference]: Finished difference. Result has 257 places, 242 transitions, 930 flow [2022-11-02 19:49:10,003 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=930, PETRI_PLACES=257, PETRI_TRANSITIONS=242} [2022-11-02 19:49:10,004 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 43 predicate places. [2022-11-02 19:49:10,004 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 242 transitions, 930 flow [2022-11-02 19:49:10,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 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 19:49:10,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:10,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 19:49:10,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 19:49:10,006 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash 336008823, now seen corresponding path program 1 times [2022-11-02 19:49:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:10,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141296434] [2022-11-02 19:49:10,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:10,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:10,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:49:10,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:10,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141296434] [2022-11-02 19:49:10,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141296434] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:49:10,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792747505] [2022-11-02 19:49:10,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:10,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:10,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:49:10,473 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:49:10,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 19:49:10,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:10,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 19:49:10,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:49:10,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:49:10,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 19:49:10,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792747505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 19:49:10,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 19:49:10,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-02 19:49:10,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198986666] [2022-11-02 19:49:10,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 19:49:10,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 19:49:10,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:10,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 19:49:10,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-02 19:49:10,992 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 239 [2022-11-02 19:49:10,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 242 transitions, 930 flow. Second operand has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:49:10,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:10,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 239 [2022-11-02 19:49:10,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:11,765 INFO L130 PetriNetUnfolder]: 369/1908 cut-off events. [2022-11-02 19:49:11,766 INFO L131 PetriNetUnfolder]: For 1416/1427 co-relation queries the response was YES. [2022-11-02 19:49:11,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 1908 events. 369/1908 cut-off events. For 1416/1427 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15105 event pairs, 207 based on Foata normal form. 1/1779 useless extension candidates. Maximal degree in co-relation 3008. Up to 531 conditions per place. [2022-11-02 19:49:11,784 INFO L137 encePairwiseOnDemand]: 219/239 looper letters, 47 selfloop transitions, 13 changer transitions 18/265 dead transitions. [2022-11-02 19:49:11,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 265 transitions, 1138 flow [2022-11-02 19:49:11,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 19:49:11,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 19:49:11,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1760 transitions. [2022-11-02 19:49:11,791 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7364016736401674 [2022-11-02 19:49:11,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1760 transitions. [2022-11-02 19:49:11,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1760 transitions. [2022-11-02 19:49:11,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:11,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1760 transitions. [2022-11-02 19:49:11,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 176.0) internal successors, (1760), 10 states have internal predecessors, (1760), 0 states have call successors, (0), 0 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 19:49:11,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 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 19:49:11,805 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 239.0) internal successors, (2629), 11 states have internal predecessors, (2629), 0 states have call successors, (0), 0 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 19:49:11,806 INFO L175 Difference]: Start difference. First operand has 257 places, 242 transitions, 930 flow. Second operand 10 states and 1760 transitions. [2022-11-02 19:49:11,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 265 transitions, 1138 flow [2022-11-02 19:49:11,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 265 transitions, 1093 flow, removed 9 selfloop flow, removed 2 redundant places. [2022-11-02 19:49:11,824 INFO L231 Difference]: Finished difference. Result has 268 places, 243 transitions, 931 flow [2022-11-02 19:49:11,824 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=931, PETRI_PLACES=268, PETRI_TRANSITIONS=243} [2022-11-02 19:49:11,826 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 54 predicate places. [2022-11-02 19:49:11,826 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 243 transitions, 931 flow [2022-11-02 19:49:11,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 171.0) internal successors, (1368), 8 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 19:49:11,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:11,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:11,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 19:49:12,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:12,053 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:12,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:12,054 INFO L85 PathProgramCache]: Analyzing trace with hash 416673764, now seen corresponding path program 1 times [2022-11-02 19:49:12,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:12,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534917850] [2022-11-02 19:49:12,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:49:12,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:12,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534917850] [2022-11-02 19:49:12,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534917850] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:49:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790604025] [2022-11-02 19:49:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:12,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:12,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:49:12,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:49:12,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 19:49:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:12,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 19:49:12,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:49:13,707 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-02 19:49:13,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-11-02 19:49:13,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:49:13,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:49:14,540 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 19:49:14,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:49:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:49:15,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790604025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:49:15,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:49:15,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 18] total 35 [2022-11-02 19:49:15,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58195893] [2022-11-02 19:49:15,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:49:15,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 19:49:15,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:15,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 19:49:15,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 19:49:15,737 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 239 [2022-11-02 19:49:15,742 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 243 transitions, 931 flow. Second operand has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 0 states have call successors, (0), 0 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 19:49:15,742 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:15,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 239 [2022-11-02 19:49:15,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:49:48,280 INFO L130 PetriNetUnfolder]: 25856/54842 cut-off events. [2022-11-02 19:49:48,280 INFO L131 PetriNetUnfolder]: For 47986/48025 co-relation queries the response was YES. [2022-11-02 19:49:48,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121048 conditions, 54842 events. 25856/54842 cut-off events. For 47986/48025 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 571024 event pairs, 703 based on Foata normal form. 89/53677 useless extension candidates. Maximal degree in co-relation 112522. Up to 8316 conditions per place. [2022-11-02 19:49:49,003 INFO L137 encePairwiseOnDemand]: 171/239 looper letters, 2091 selfloop transitions, 493 changer transitions 446/3112 dead transitions. [2022-11-02 19:49:49,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 3112 transitions, 17313 flow [2022-11-02 19:49:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 164 states. [2022-11-02 19:49:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2022-11-02 19:49:49,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 17743 transitions. [2022-11-02 19:49:49,044 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.45267374221859374 [2022-11-02 19:49:49,045 INFO L72 ComplementDD]: Start complementDD. Operand 164 states and 17743 transitions. [2022-11-02 19:49:49,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 164 states and 17743 transitions. [2022-11-02 19:49:49,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:49:49,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 164 states and 17743 transitions. [2022-11-02 19:49:49,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 165 states, 164 states have (on average 108.1890243902439) internal successors, (17743), 164 states have internal predecessors, (17743), 0 states have call successors, (0), 0 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 19:49:49,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 165 states, 165 states have (on average 239.0) internal successors, (39435), 165 states have internal predecessors, (39435), 0 states have call successors, (0), 0 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 19:49:49,172 INFO L81 ComplementDD]: Finished complementDD. Result has 165 states, 165 states have (on average 239.0) internal successors, (39435), 165 states have internal predecessors, (39435), 0 states have call successors, (0), 0 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 19:49:49,173 INFO L175 Difference]: Start difference. First operand has 268 places, 243 transitions, 931 flow. Second operand 164 states and 17743 transitions. [2022-11-02 19:49:49,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 3112 transitions, 17313 flow [2022-11-02 19:49:50,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 3112 transitions, 16424 flow, removed 322 selfloop flow, removed 7 redundant places. [2022-11-02 19:49:50,202 INFO L231 Difference]: Finished difference. Result has 521 places, 760 transitions, 5584 flow [2022-11-02 19:49:50,203 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=164, PETRI_FLOW=5584, PETRI_PLACES=521, PETRI_TRANSITIONS=760} [2022-11-02 19:49:50,203 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 307 predicate places. [2022-11-02 19:49:50,204 INFO L495 AbstractCegarLoop]: Abstraction has has 521 places, 760 transitions, 5584 flow [2022-11-02 19:49:50,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 96.82857142857142) internal successors, (3389), 35 states have internal predecessors, (3389), 0 states have call successors, (0), 0 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 19:49:50,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:49:50,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:49:50,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 19:49:50,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 19:49:50,417 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:49:50,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:49:50,418 INFO L85 PathProgramCache]: Analyzing trace with hash 454125398, now seen corresponding path program 2 times [2022-11-02 19:49:50,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:49:50,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969487177] [2022-11-02 19:49:50,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:49:50,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:49:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:49:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:49:50,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:49:50,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969487177] [2022-11-02 19:49:50,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969487177] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:49:50,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582228947] [2022-11-02 19:49:50,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 19:49:50,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:49:50,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:49:50,993 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:49:51,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 19:49:51,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 19:49:51,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:49:51,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 19:49:51,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:49:52,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:49:52,302 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:49:52,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-11-02 19:49:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:49:52,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:49:52,860 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 19:49:52,861 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:49:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:49:53,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582228947] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:49:53,992 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:49:53,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 23, 18] total 40 [2022-11-02 19:49:53,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5611342] [2022-11-02 19:49:53,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:49:53,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-02 19:49:53,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:49:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-02 19:49:53,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1406, Unknown=0, NotChecked=0, Total=1560 [2022-11-02 19:49:54,000 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 239 [2022-11-02 19:49:54,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 760 transitions, 5584 flow. Second operand has 40 states, 40 states have (on average 89.625) internal successors, (3585), 40 states have internal predecessors, (3585), 0 states have call successors, (0), 0 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 19:49:54,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:49:54,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 239 [2022-11-02 19:49:54,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 19:50:28,498 INFO L130 PetriNetUnfolder]: 25127/52693 cut-off events. [2022-11-02 19:50:28,498 INFO L131 PetriNetUnfolder]: For 433812/433950 co-relation queries the response was YES. [2022-11-02 19:50:29,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208186 conditions, 52693 events. 25127/52693 cut-off events. For 433812/433950 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 537602 event pairs, 3562 based on Foata normal form. 162/52033 useless extension candidates. Maximal degree in co-relation 207992. Up to 13696 conditions per place. [2022-11-02 19:50:30,208 INFO L137 encePairwiseOnDemand]: 171/239 looper letters, 1823 selfloop transitions, 576 changer transitions 4/2478 dead transitions. [2022-11-02 19:50:30,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 570 places, 2478 transitions, 25015 flow [2022-11-02 19:50:30,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2022-11-02 19:50:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2022-11-02 19:50:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 10981 transitions. [2022-11-02 19:50:30,259 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.42151932747303367 [2022-11-02 19:50:30,259 INFO L72 ComplementDD]: Start complementDD. Operand 109 states and 10981 transitions. [2022-11-02 19:50:30,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 109 states and 10981 transitions. [2022-11-02 19:50:30,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 19:50:30,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 109 states and 10981 transitions. [2022-11-02 19:50:30,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 110 states, 109 states have (on average 100.74311926605505) internal successors, (10981), 109 states have internal predecessors, (10981), 0 states have call successors, (0), 0 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 19:50:30,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 110 states, 110 states have (on average 239.0) internal successors, (26290), 110 states have internal predecessors, (26290), 0 states have call successors, (0), 0 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 19:50:30,353 INFO L81 ComplementDD]: Finished complementDD. Result has 110 states, 110 states have (on average 239.0) internal successors, (26290), 110 states have internal predecessors, (26290), 0 states have call successors, (0), 0 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 19:50:30,354 INFO L175 Difference]: Start difference. First operand has 521 places, 760 transitions, 5584 flow. Second operand 109 states and 10981 transitions. [2022-11-02 19:50:30,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 570 places, 2478 transitions, 25015 flow [2022-11-02 19:50:36,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 2478 transitions, 24335 flow, removed 265 selfloop flow, removed 18 redundant places. [2022-11-02 19:50:36,997 INFO L231 Difference]: Finished difference. Result has 601 places, 1068 transitions, 10169 flow [2022-11-02 19:50:36,998 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=239, PETRI_DIFFERENCE_MINUEND_FLOW=5315, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=269, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=109, PETRI_FLOW=10169, PETRI_PLACES=601, PETRI_TRANSITIONS=1068} [2022-11-02 19:50:36,999 INFO L287 CegarLoopForPetriNet]: 214 programPoint places, 387 predicate places. [2022-11-02 19:50:36,999 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 1068 transitions, 10169 flow [2022-11-02 19:50:37,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 89.625) internal successors, (3585), 40 states have internal predecessors, (3585), 0 states have call successors, (0), 0 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 19:50:37,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 19:50:37,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:37,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 19:50:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 19:50:37,201 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-02 19:50:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 19:50:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1169345300, now seen corresponding path program 3 times [2022-11-02 19:50:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 19:50:37,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021594374] [2022-11-02 19:50:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 19:50:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 19:50:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 19:50:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 19:50:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 19:50:37,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021594374] [2022-11-02 19:50:37,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021594374] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 19:50:37,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161332209] [2022-11-02 19:50:37,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 19:50:37,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 19:50:37,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 19:50:37,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 19:50:37,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6cbd70e-9623-4606-914e-c8dddbe54384/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 19:50:38,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 19:50:38,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 19:50:38,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 19:50:38,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 19:50:39,145 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-02 19:50:39,148 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 19:50:39,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-11-02 19:50:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:50:39,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 19:50:39,681 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-02 19:50:39,682 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-11-02 19:50:40,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 19:50:40,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161332209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 19:50:40,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 19:50:40,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 18] total 41 [2022-11-02 19:50:40,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990546212] [2022-11-02 19:50:40,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 19:50:40,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-02 19:50:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 19:50:40,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-02 19:50:40,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1480, Unknown=0, NotChecked=0, Total=1640 [2022-11-02 19:50:40,992 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 239 [2022-11-02 19:50:40,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 1068 transitions, 10169 flow. Second operand has 41 states, 41 states have (on average 89.3170731707317) internal successors, (3662), 41 states have internal predecessors, (3662), 0 states have call successors, (0), 0 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 19:50:40,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 19:50:40,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 239 [2022-11-02 19:50:40,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand