./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/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_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/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_1592eaec-236c-48ef-9f5d-2a92555cdcbe/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 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:34:55,684 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:34:55,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:34:55,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:34:55,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:34:55,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:34:55,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:34:55,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:34:55,756 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:34:55,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:34:55,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:34:55,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:34:55,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:34:55,761 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:34:55,766 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:34:55,768 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:34:55,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:34:55,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:34:55,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:34:55,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:34:55,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:34:55,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:34:55,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:34:55,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:34:55,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:34:55,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:34:55,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:34:55,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:34:55,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:34:55,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:34:55,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:34:55,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:34:55,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:34:55,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:34:55,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:34:55,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:34:55,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:34:55,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:34:55,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:34:55,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:34:55,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:34:55,823 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:34:55,860 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:34:55,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:34:55,861 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:34:55,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:34:55,862 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:34:55,863 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:34:55,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:34:55,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:34:55,864 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:34:55,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:34:55,866 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:34:55,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:34:55,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:34:55,866 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:34:55,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:34:55,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:34:55,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:34:55,867 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:34:55,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:34:55,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:34:55,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:34:55,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:34:55,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:34:55,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:34:55,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:55,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:34:55,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:34:55,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:34:55,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:34:55,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:34:55,872 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:34:55,872 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:34:55,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:34:55,873 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_1592eaec-236c-48ef-9f5d-2a92555cdcbe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d38eb9d6ba70070fe3ced1aec90f1c3400cc1f89786e1bd625a19020cb0869f [2022-11-02 20:34:56,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:34:56,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:34:56,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:34:56,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:34:56,188 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:34:56,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-02 20:34:56,273 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/data/7a5c78ad9/b9f95903acd24fc892c2b71b937359a0/FLAG8fe7fd059 [2022-11-02 20:34:56,895 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:34:56,896 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c [2022-11-02 20:34:56,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/data/7a5c78ad9/b9f95903acd24fc892c2b71b937359a0/FLAG8fe7fd059 [2022-11-02 20:34:57,221 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/data/7a5c78ad9/b9f95903acd24fc892c2b71b937359a0 [2022-11-02 20:34:57,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:34:57,227 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:34:57,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:57,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:34:57,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:34:57,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bf518f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57, skipping insertion in model container [2022-11-02 20:34:57,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:34:57,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:34:57,568 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_1592eaec-236c-48ef-9f5d-2a92555cdcbe/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-02 20:34:57,589 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:57,609 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:34:57,634 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_1592eaec-236c-48ef-9f5d-2a92555cdcbe/sv-benchmarks/c/weaver/popl20-more-mts.wvr.c[2533,2546] [2022-11-02 20:34:57,640 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:34:57,657 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:34:57,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57 WrapperNode [2022-11-02 20:34:57,657 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:34:57,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:57,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:34:57,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:34:57,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,708 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 13, calls inlined = 19, statements flattened = 229 [2022-11-02 20:34:57,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:34:57,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:34:57,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:34:57,710 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:34:57,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,724 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,724 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,740 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,745 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:34:57,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:34:57,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:34:57,746 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:34:57,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (1/1) ... [2022-11-02 20:34:57,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:34:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:34:57,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:34:57,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:34:57,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:34:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:34:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:34:57,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:34:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:34:57,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:34:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:34:57,860 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:34:57,860 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:34:57,861 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:34:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:34:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:34:57,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:34:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:34:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:34:57,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:34:57,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:34:57,864 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:34:58,075 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:34:58,089 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:34:58,597 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:34:58,831 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:34:58,831 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:34:58,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:58 BoogieIcfgContainer [2022-11-02 20:34:58,836 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:34:58,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:34:58,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:34:58,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:34:58,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:34:57" (1/3) ... [2022-11-02 20:34:58,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614722dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:58, skipping insertion in model container [2022-11-02 20:34:58,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:34:57" (2/3) ... [2022-11-02 20:34:58,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@614722dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:34:58, skipping insertion in model container [2022-11-02 20:34:58,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:34:58" (3/3) ... [2022-11-02 20:34:58,853 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-mts.wvr.c [2022-11-02 20:34:58,867 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:34:58,879 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:34:58,879 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:34:58,880 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:34:59,004 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:34:59,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 232 transitions, 488 flow [2022-11-02 20:34:59,156 INFO L130 PetriNetUnfolder]: 19/229 cut-off events. [2022-11-02 20:34:59,156 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:34:59,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 229 events. 19/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 186. Up to 2 conditions per place. [2022-11-02 20:34:59,163 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 232 transitions, 488 flow [2022-11-02 20:34:59,171 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 218 transitions, 454 flow [2022-11-02 20:34:59,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:34:59,194 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;@64bb9a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:34:59,196 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:34:59,301 INFO L130 PetriNetUnfolder]: 19/217 cut-off events. [2022-11-02 20:34:59,301 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:34:59,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:59,302 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] [2022-11-02 20:34:59,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:34:59,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:59,309 INFO L85 PathProgramCache]: Analyzing trace with hash -455398299, now seen corresponding path program 1 times [2022-11-02 20:34:59,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:59,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279237097] [2022-11-02 20:34:59,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:59,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:34:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:34:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:34:59,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:34:59,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279237097] [2022-11-02 20:34:59,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279237097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:34:59,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:34:59,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:34:59,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273254718] [2022-11-02 20:34:59,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:34:59,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:34:59,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:34:59,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:34:59,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:34:59,782 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 232 [2022-11-02 20:34:59,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 218 transitions, 454 flow. Second operand has 2 states, 2 states have (on average 217.0) internal successors, (434), 2 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:59,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:34:59,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 232 [2022-11-02 20:34:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:34:59,885 INFO L130 PetriNetUnfolder]: 12/227 cut-off events. [2022-11-02 20:34:59,886 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-02 20:34:59,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 227 events. 12/227 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 458 event pairs, 2 based on Foata normal form. 25/235 useless extension candidates. Maximal degree in co-relation 178. Up to 15 conditions per place. [2022-11-02 20:34:59,890 INFO L137 encePairwiseOnDemand]: 220/232 looper letters, 7 selfloop transitions, 0 changer transitions 4/206 dead transitions. [2022-11-02 20:34:59,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 206 transitions, 444 flow [2022-11-02 20:34:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:34:59,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:34:59,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 443 transitions. [2022-11-02 20:34:59,917 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9547413793103449 [2022-11-02 20:34:59,918 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 443 transitions. [2022-11-02 20:34:59,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 443 transitions. [2022-11-02 20:34:59,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:34:59,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 443 transitions. [2022-11-02 20:34:59,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 221.5) internal successors, (443), 2 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:59,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:59,953 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:59,955 INFO L175 Difference]: Start difference. First operand has 209 places, 218 transitions, 454 flow. Second operand 2 states and 443 transitions. [2022-11-02 20:34:59,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 206 transitions, 444 flow [2022-11-02 20:34:59,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 206 transitions, 432 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:34:59,971 INFO L231 Difference]: Finished difference. Result has 204 places, 202 transitions, 410 flow [2022-11-02 20:34:59,974 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=410, PETRI_PLACES=204, PETRI_TRANSITIONS=202} [2022-11-02 20:34:59,981 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -5 predicate places. [2022-11-02 20:34:59,982 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 202 transitions, 410 flow [2022-11-02 20:34:59,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 217.0) internal successors, (434), 2 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:34:59,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:34:59,984 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] [2022-11-02 20:34:59,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:34:59,985 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:34:59,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:34:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1671150115, now seen corresponding path program 1 times [2022-11-02 20:34:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:34:59,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688576318] [2022-11-02 20:34:59,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:34:59,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:00,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:00,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:00,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688576318] [2022-11-02 20:35:00,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688576318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:00,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:00,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:35:00,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958269235] [2022-11-02 20:35:00,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:00,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:35:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:00,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:35:00,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:35:00,914 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 232 [2022-11-02 20:35:00,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 202 transitions, 410 flow. Second operand has 8 states, 8 states have (on average 175.5) internal successors, (1404), 8 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:00,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:00,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 232 [2022-11-02 20:35:00,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:01,452 INFO L130 PetriNetUnfolder]: 195/830 cut-off events. [2022-11-02 20:35:01,452 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-02 20:35:01,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 830 events. 195/830 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4262 event pairs, 92 based on Foata normal form. 1/663 useless extension candidates. Maximal degree in co-relation 1127. Up to 270 conditions per place. [2022-11-02 20:35:01,467 INFO L137 encePairwiseOnDemand]: 222/232 looper letters, 42 selfloop transitions, 6 changer transitions 4/210 dead transitions. [2022-11-02 20:35:01,467 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 210 transitions, 530 flow [2022-11-02 20:35:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:35:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:35:01,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1421 transitions. [2022-11-02 20:35:01,479 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.765625 [2022-11-02 20:35:01,480 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1421 transitions. [2022-11-02 20:35:01,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1421 transitions. [2022-11-02 20:35:01,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:01,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1421 transitions. [2022-11-02 20:35:01,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 177.625) internal successors, (1421), 8 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:01,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:01,496 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:01,496 INFO L175 Difference]: Start difference. First operand has 204 places, 202 transitions, 410 flow. Second operand 8 states and 1421 transitions. [2022-11-02 20:35:01,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 210 transitions, 530 flow [2022-11-02 20:35:01,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 210 transitions, 530 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:35:01,509 INFO L231 Difference]: Finished difference. Result has 211 places, 203 transitions, 438 flow [2022-11-02 20:35:01,510 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=410, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=438, PETRI_PLACES=211, PETRI_TRANSITIONS=203} [2022-11-02 20:35:01,511 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 2 predicate places. [2022-11-02 20:35:01,512 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 203 transitions, 438 flow [2022-11-02 20:35:01,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.5) internal successors, (1404), 8 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:01,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:01,514 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 20:35:01,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:35:01,514 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:35:01,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:01,517 INFO L85 PathProgramCache]: Analyzing trace with hash 653630989, now seen corresponding path program 1 times [2022-11-02 20:35:01,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:01,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83283959] [2022-11-02 20:35:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:01,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:01,833 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 20:35:01,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:01,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83283959] [2022-11-02 20:35:01,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83283959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:01,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:35:01,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:35:01,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921629728] [2022-11-02 20:35:01,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:01,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:01,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:01,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:01,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:35:01,843 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 232 [2022-11-02 20:35:01,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 203 transitions, 438 flow. Second operand has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:01,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:01,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 232 [2022-11-02 20:35:01,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:02,097 INFO L130 PetriNetUnfolder]: 52/575 cut-off events. [2022-11-02 20:35:02,097 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-02 20:35:02,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 692 conditions, 575 events. 52/575 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2185 event pairs, 2 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 684. Up to 47 conditions per place. [2022-11-02 20:35:02,109 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 32 selfloop transitions, 6 changer transitions 0/224 dead transitions. [2022-11-02 20:35:02,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 224 transitions, 563 flow [2022-11-02 20:35:02,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:35:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:35:02,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1049 transitions. [2022-11-02 20:35:02,114 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9043103448275862 [2022-11-02 20:35:02,115 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1049 transitions. [2022-11-02 20:35:02,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1049 transitions. [2022-11-02 20:35:02,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:02,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1049 transitions. [2022-11-02 20:35:02,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.8) internal successors, (1049), 5 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,125 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,125 INFO L175 Difference]: Start difference. First operand has 211 places, 203 transitions, 438 flow. Second operand 5 states and 1049 transitions. [2022-11-02 20:35:02,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 224 transitions, 563 flow [2022-11-02 20:35:02,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 224 transitions, 545 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-02 20:35:02,133 INFO L231 Difference]: Finished difference. Result has 207 places, 206 transitions, 447 flow [2022-11-02 20:35:02,133 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=447, PETRI_PLACES=207, PETRI_TRANSITIONS=206} [2022-11-02 20:35:02,136 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, -2 predicate places. [2022-11-02 20:35:02,137 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 206 transitions, 447 flow [2022-11-02 20:35:02,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.2) internal successors, (1021), 5 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:02,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:02,139 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 20:35:02,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:35:02,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:35:02,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:02,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1652797045, now seen corresponding path program 1 times [2022-11-02 20:35:02,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:02,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399331929] [2022-11-02 20:35:02,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:02,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:02,426 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 20:35:02,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:02,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399331929] [2022-11-02 20:35:02,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399331929] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:02,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684237342] [2022-11-02 20:35:02,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:02,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:02,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:35:02,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:35:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:02,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:35:02,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:02,825 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 20:35:02,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:03,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684237342] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:03,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:03,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-02 20:35:03,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772729565] [2022-11-02 20:35:03,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:03,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:35:03,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:03,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:35:03,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:35:03,144 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 232 [2022-11-02 20:35:03,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 206 transitions, 447 flow. Second operand has 7 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:03,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:03,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 232 [2022-11-02 20:35:03,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:03,606 INFO L130 PetriNetUnfolder]: 125/1107 cut-off events. [2022-11-02 20:35:03,606 INFO L131 PetriNetUnfolder]: For 33/46 co-relation queries the response was YES. [2022-11-02 20:35:03,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 1107 events. 125/1107 cut-off events. For 33/46 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 5904 event pairs, 46 based on Foata normal form. 0/986 useless extension candidates. Maximal degree in co-relation 1392. Up to 93 conditions per place. [2022-11-02 20:35:03,626 INFO L137 encePairwiseOnDemand]: 224/232 looper letters, 34 selfloop transitions, 7 changer transitions 0/214 dead transitions. [2022-11-02 20:35:03,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 214 transitions, 552 flow [2022-11-02 20:35:03,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:35:03,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:35:03,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1355 transitions. [2022-11-02 20:35:03,633 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8343596059113301 [2022-11-02 20:35:03,633 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1355 transitions. [2022-11-02 20:35:03,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1355 transitions. [2022-11-02 20:35:03,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:03,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1355 transitions. [2022-11-02 20:35:03,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 193.57142857142858) internal successors, (1355), 7 states have internal predecessors, (1355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:03,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:03,647 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:03,647 INFO L175 Difference]: Start difference. First operand has 207 places, 206 transitions, 447 flow. Second operand 7 states and 1355 transitions. [2022-11-02 20:35:03,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 214 transitions, 552 flow [2022-11-02 20:35:03,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 214 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:35:03,655 INFO L231 Difference]: Finished difference. Result has 215 places, 208 transitions, 478 flow [2022-11-02 20:35:03,656 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=478, PETRI_PLACES=215, PETRI_TRANSITIONS=208} [2022-11-02 20:35:03,657 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 6 predicate places. [2022-11-02 20:35:03,657 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 208 transitions, 478 flow [2022-11-02 20:35:03,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 191.42857142857142) internal successors, (1340), 7 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:03,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:03,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:03,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:35:03,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:03,876 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:35:03,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:03,877 INFO L85 PathProgramCache]: Analyzing trace with hash 11397645, now seen corresponding path program 1 times [2022-11-02 20:35:03,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:03,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192713525] [2022-11-02 20:35:03,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:03,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:04,286 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 20:35:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:04,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192713525] [2022-11-02 20:35:04,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192713525] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:04,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143690446] [2022-11-02 20:35:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:04,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:04,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:04,290 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:35:04,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:35:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:04,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:35:04,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:04,733 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 20:35:04,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:05,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:35:05,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143690446] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:05,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:05,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-02 20:35:05,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966371181] [2022-11-02 20:35:05,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:35:05,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:35:05,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:35:05,128 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 232 [2022-11-02 20:35:05,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 208 transitions, 478 flow. Second operand has 9 states, 9 states have (on average 184.22222222222223) internal successors, (1658), 9 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:05,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:05,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 232 [2022-11-02 20:35:05,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:06,226 INFO L130 PetriNetUnfolder]: 952/2781 cut-off events. [2022-11-02 20:35:06,226 INFO L131 PetriNetUnfolder]: For 860/1181 co-relation queries the response was YES. [2022-11-02 20:35:06,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4878 conditions, 2781 events. 952/2781 cut-off events. For 860/1181 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 19407 event pairs, 269 based on Foata normal form. 302/2657 useless extension candidates. Maximal degree in co-relation 4868. Up to 404 conditions per place. [2022-11-02 20:35:06,264 INFO L137 encePairwiseOnDemand]: 221/232 looper letters, 85 selfloop transitions, 17 changer transitions 0/268 dead transitions. [2022-11-02 20:35:06,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 268 transitions, 863 flow [2022-11-02 20:35:06,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:35:06,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:35:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2084 transitions. [2022-11-02 20:35:06,272 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8166144200626959 [2022-11-02 20:35:06,272 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2084 transitions. [2022-11-02 20:35:06,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2084 transitions. [2022-11-02 20:35:06,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:06,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2084 transitions. [2022-11-02 20:35:06,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 189.45454545454547) internal successors, (2084), 11 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:06,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 232.0) internal successors, (2784), 12 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:06,290 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 232.0) internal successors, (2784), 12 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:06,290 INFO L175 Difference]: Start difference. First operand has 215 places, 208 transitions, 478 flow. Second operand 11 states and 2084 transitions. [2022-11-02 20:35:06,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 268 transitions, 863 flow [2022-11-02 20:35:06,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 268 transitions, 850 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:35:06,299 INFO L231 Difference]: Finished difference. Result has 225 places, 219 transitions, 558 flow [2022-11-02 20:35:06,300 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=558, PETRI_PLACES=225, PETRI_TRANSITIONS=219} [2022-11-02 20:35:06,303 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 16 predicate places. [2022-11-02 20:35:06,303 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 219 transitions, 558 flow [2022-11-02 20:35:06,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 184.22222222222223) internal successors, (1658), 9 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:06,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:06,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:06,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:06,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:06,519 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:35:06,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:06,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1128603471, now seen corresponding path program 2 times [2022-11-02 20:35:06,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:06,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83334644] [2022-11-02 20:35:06,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:06,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:06,873 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 20:35:06,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:06,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83334644] [2022-11-02 20:35:06,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83334644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:06,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079706022] [2022-11-02 20:35:06,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:35:06,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:06,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:06,881 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:35:06,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:35:07,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:35:07,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:35:07,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:35:07,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:35:07,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:35:07,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079706022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:35:07,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:35:07,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-02 20:35:07,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65503389] [2022-11-02 20:35:07,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:07,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:35:07,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:07,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:35:07,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:35:07,469 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 232 [2022-11-02 20:35:07,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 219 transitions, 558 flow. Second operand has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:07,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:07,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 232 [2022-11-02 20:35:07,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:08,221 INFO L130 PetriNetUnfolder]: 426/1866 cut-off events. [2022-11-02 20:35:08,221 INFO L131 PetriNetUnfolder]: For 764/919 co-relation queries the response was YES. [2022-11-02 20:35:08,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 1866 events. 426/1866 cut-off events. For 764/919 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11631 event pairs, 106 based on Foata normal form. 169/1883 useless extension candidates. Maximal degree in co-relation 3170. Up to 375 conditions per place. [2022-11-02 20:35:08,253 INFO L137 encePairwiseOnDemand]: 223/232 looper letters, 45 selfloop transitions, 13 changer transitions 0/230 dead transitions. [2022-11-02 20:35:08,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 230 transitions, 723 flow [2022-11-02 20:35:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:35:08,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:35:08,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1469 transitions. [2022-11-02 20:35:08,258 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7914870689655172 [2022-11-02 20:35:08,259 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1469 transitions. [2022-11-02 20:35:08,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1469 transitions. [2022-11-02 20:35:08,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:08,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1469 transitions. [2022-11-02 20:35:08,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 183.625) internal successors, (1469), 8 states have internal predecessors, (1469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:08,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:08,271 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 232.0) internal successors, (2088), 9 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:08,271 INFO L175 Difference]: Start difference. First operand has 225 places, 219 transitions, 558 flow. Second operand 8 states and 1469 transitions. [2022-11-02 20:35:08,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 230 transitions, 723 flow [2022-11-02 20:35:08,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 230 transitions, 714 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-11-02 20:35:08,284 INFO L231 Difference]: Finished difference. Result has 230 places, 222 transitions, 617 flow [2022-11-02 20:35:08,284 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=617, PETRI_PLACES=230, PETRI_TRANSITIONS=222} [2022-11-02 20:35:08,287 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 21 predicate places. [2022-11-02 20:35:08,287 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 222 transitions, 617 flow [2022-11-02 20:35:08,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 183.33333333333334) internal successors, (1100), 6 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:08,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:08,289 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:08,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:08,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:35:08,515 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:35:08,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1615971972, now seen corresponding path program 1 times [2022-11-02 20:35:08,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:08,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142622335] [2022-11-02 20:35:08,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:08,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:35:09,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:09,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142622335] [2022-11-02 20:35:09,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142622335] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:09,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863095906] [2022-11-02 20:35:09,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:09,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:09,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:09,070 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:35:09,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:35:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:09,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:35:09,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:10,138 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2022-11-02 20:35:10,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:35:10,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:10,541 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 40 [2022-11-02 20:35:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:35:10,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863095906] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:10,838 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:35:10,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 11 [2022-11-02 20:35:10,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949910915] [2022-11-02 20:35:10,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:35:10,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:35:10,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:35:10,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:35:10,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:35:10,841 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 232 [2022-11-02 20:35:10,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 222 transitions, 617 flow. Second operand has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:10,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:35:10,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 232 [2022-11-02 20:35:10,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:35:11,102 INFO L130 PetriNetUnfolder]: 92/767 cut-off events. [2022-11-02 20:35:11,102 INFO L131 PetriNetUnfolder]: For 208/222 co-relation queries the response was YES. [2022-11-02 20:35:11,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1159 conditions, 767 events. 92/767 cut-off events. For 208/222 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3704 event pairs, 15 based on Foata normal form. 7/719 useless extension candidates. Maximal degree in co-relation 1143. Up to 63 conditions per place. [2022-11-02 20:35:11,125 INFO L137 encePairwiseOnDemand]: 226/232 looper letters, 23 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2022-11-02 20:35:11,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 231 transitions, 699 flow [2022-11-02 20:35:11,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:35:11,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:35:11,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1240 transitions. [2022-11-02 20:35:11,130 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2022-11-02 20:35:11,130 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1240 transitions. [2022-11-02 20:35:11,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1240 transitions. [2022-11-02 20:35:11,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:35:11,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1240 transitions. [2022-11-02 20:35:11,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.66666666666666) internal successors, (1240), 6 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:11,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:11,142 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 232.0) internal successors, (1624), 7 states have internal predecessors, (1624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:11,142 INFO L175 Difference]: Start difference. First operand has 230 places, 222 transitions, 617 flow. Second operand 6 states and 1240 transitions. [2022-11-02 20:35:11,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 231 transitions, 699 flow [2022-11-02 20:35:11,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 231 transitions, 682 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-02 20:35:11,158 INFO L231 Difference]: Finished difference. Result has 232 places, 223 transitions, 625 flow [2022-11-02 20:35:11,159 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=625, PETRI_PLACES=232, PETRI_TRANSITIONS=223} [2022-11-02 20:35:11,160 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 23 predicate places. [2022-11-02 20:35:11,160 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 223 transitions, 625 flow [2022-11-02 20:35:11,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:35:11,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:35:11,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:35:11,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:35:11,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:11,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:35:11,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:35:11,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1080458872, now seen corresponding path program 1 times [2022-11-02 20:35:11,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:35:11,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231268846] [2022-11-02 20:35:11,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:11,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:35:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:35:14,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231268846] [2022-11-02 20:35:14,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231268846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:35:14,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294530899] [2022-11-02 20:35:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:35:14,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:35:14,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:35:14,599 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:35:14,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:35:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:35:14,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-02 20:35:14,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:35:15,950 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-02 20:35:17,120 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:35:17,342 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:35:17,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:35:18,954 INFO L356 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-11-02 20:35:18,955 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 62 treesize of output 37 [2022-11-02 20:35:19,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:35:19,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:35:20,861 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_209 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_209) c_~A~0.base))) (let ((.cse0 (+ c_~mts3~0 (select .cse1 (+ c_~A~0.offset (* 4 c_~M~0)))))) (or (< .cse0 0) (< 0 (+ (select .cse1 c_~A~0.offset) c_~mts1~0 1)) (= 0 .cse0))))) is different from false [2022-11-02 20:35:20,951 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_209 (Array Int Int)) (v_ArrVal_208 (Array Int Int))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_208) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_209) c_~A~0.base))) (let ((.cse0 (+ (select .cse1 (+ c_~A~0.offset (* 4 c_~M~0))) c_~mts3~0))) (or (< .cse0 0) (< 0 (+ (select .cse1 c_~A~0.offset) c_~mts1~0 1)) (= .cse0 0))))) is different from false [2022-11-02 20:35:21,124 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_207 (Array Int Int)) (v_ArrVal_209 (Array Int Int)) (v_ArrVal_208 (Array Int Int))) (let ((.cse1 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_207) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_208) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_209) c_~A~0.base))) (let ((.cse0 (+ (select .cse1 (+ c_~A~0.offset (* 4 c_~M~0))) c_~mts3~0))) (or (= .cse0 0) (< .cse0 0) (< 0 (+ c_~mts1~0 (select .cse1 c_~A~0.offset) 1)))))) is different from false [2022-11-02 20:35:21,226 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_207 (Array Int Int)) (v_ArrVal_209 (Array Int Int)) (v_ArrVal_208 (Array Int Int))) (let ((.cse1 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_207) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_208) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_209) c_~A~0.base))) (let ((.cse0 (+ (select .cse1 (+ c_~A~0.offset (* 4 c_~M~0))) c_~mts3~0))) (or (= .cse0 0) (< .cse0 0) (< 0 (+ c_~mts1~0 (select .cse1 c_~A~0.offset) 1)))))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) is different from false [2022-11-02 20:35:21,253 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_207 (Array Int Int)) (v_ArrVal_209 (Array Int Int)) (v_ArrVal_208 (Array Int Int))) (let ((.cse1 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_207) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_208) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_209) c_~A~0.base))) (let ((.cse0 (+ (select .cse1 (+ c_~A~0.offset (* 4 c_~M~0))) c_~mts3~0))) (or (= .cse0 0) (< .cse0 0) (< 0 (+ c_~mts1~0 (select .cse1 c_~A~0.offset) 1)))))) (= |c_ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) is different from false [2022-11-02 20:35:23,069 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:23,070 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 76 [2022-11-02 20:35:23,103 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:23,104 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 1912 treesize of output 1842 [2022-11-02 20:35:23,154 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:23,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1832 treesize of output 1730 [2022-11-02 20:35:23,266 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:23,267 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1720 treesize of output 1506 [2022-11-02 20:35:23,321 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:35:23,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1496 treesize of output 1450 [2022-11-02 20:36:02,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:36:02,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294530899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:36:02,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:36:02,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 39, 35] total 99 [2022-11-02 20:36:02,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041371905] [2022-11-02 20:36:02,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:36:02,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-11-02 20:36:02,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:36:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-11-02 20:36:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=8035, Unknown=74, NotChecked=940, Total=9702 [2022-11-02 20:36:02,779 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 232 [2022-11-02 20:36:02,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 223 transitions, 625 flow. Second operand has 99 states, 99 states have (on average 110.60606060606061) internal successors, (10950), 99 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:36:02,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:36:02,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 232 [2022-11-02 20:36:02,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:37:17,081 INFO L130 PetriNetUnfolder]: 118321/203500 cut-off events. [2022-11-02 20:37:17,082 INFO L131 PetriNetUnfolder]: For 146500/168347 co-relation queries the response was YES. [2022-11-02 20:37:18,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485977 conditions, 203500 events. 118321/203500 cut-off events. For 146500/168347 co-relation queries the response was YES. Maximal size of possible extension queue 3400. Compared 2032760 event pairs, 7280 based on Foata normal form. 2152/196779 useless extension candidates. Maximal degree in co-relation 485960. Up to 24084 conditions per place. [2022-11-02 20:37:19,877 INFO L137 encePairwiseOnDemand]: 176/232 looper letters, 1718 selfloop transitions, 458 changer transitions 12/2294 dead transitions. [2022-11-02 20:37:19,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 2294 transitions, 12764 flow [2022-11-02 20:37:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-11-02 20:37:19,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2022-11-02 20:37:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 14898 transitions. [2022-11-02 20:37:19,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5263566986998304 [2022-11-02 20:37:19,923 INFO L72 ComplementDD]: Start complementDD. Operand 122 states and 14898 transitions. [2022-11-02 20:37:19,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 14898 transitions. [2022-11-02 20:37:19,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:37:19,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 122 states and 14898 transitions. [2022-11-02 20:37:19,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 123 states, 122 states have (on average 122.11475409836065) internal successors, (14898), 122 states have internal predecessors, (14898), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:20,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 123 states, 123 states have (on average 232.0) internal successors, (28536), 123 states have internal predecessors, (28536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:20,029 INFO L81 ComplementDD]: Finished complementDD. Result has 123 states, 123 states have (on average 232.0) internal successors, (28536), 123 states have internal predecessors, (28536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:20,030 INFO L175 Difference]: Start difference. First operand has 232 places, 223 transitions, 625 flow. Second operand 122 states and 14898 transitions. [2022-11-02 20:37:20,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 2294 transitions, 12764 flow [2022-11-02 20:37:28,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 2294 transitions, 12561 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:37:28,143 INFO L231 Difference]: Finished difference. Result has 429 places, 720 transitions, 5143 flow [2022-11-02 20:37:28,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=122, PETRI_FLOW=5143, PETRI_PLACES=429, PETRI_TRANSITIONS=720} [2022-11-02 20:37:28,145 INFO L287 CegarLoopForPetriNet]: 209 programPoint places, 220 predicate places. [2022-11-02 20:37:28,145 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 720 transitions, 5143 flow [2022-11-02 20:37:28,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 99 states, 99 states have (on average 110.60606060606061) internal successors, (10950), 99 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:28,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:37:28,150 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:37:28,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:37:28,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:28,365 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:37:28,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:37:28,365 INFO L85 PathProgramCache]: Analyzing trace with hash -960565562, now seen corresponding path program 2 times [2022-11-02 20:37:28,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:37:28,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203633203] [2022-11-02 20:37:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:37:28,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:37:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:37:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:31,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:37:31,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203633203] [2022-11-02 20:37:31,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203633203] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:37:31,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96420693] [2022-11-02 20:37:31,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:37:31,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:37:31,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:37:31,228 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:37:31,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1592eaec-236c-48ef-9f5d-2a92555cdcbe/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:37:31,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:37:31,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:37:31,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-02 20:37:31,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:37:32,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:37:32,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-02 20:37:34,019 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:37:34,019 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 58 treesize of output 46 [2022-11-02 20:37:34,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:34,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:37:37,240 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:37:37,241 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 81 treesize of output 69 [2022-11-02 20:37:37,248 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2022-11-02 20:37:38,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:37:38,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96420693] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:37:38,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:37:38,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38, 38] total 103 [2022-11-02 20:37:38,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265493822] [2022-11-02 20:37:38,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:37:38,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-11-02 20:37:38,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:37:38,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-11-02 20:37:38,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=645, Invalid=9858, Unknown=3, NotChecked=0, Total=10506 [2022-11-02 20:37:38,937 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 232 [2022-11-02 20:37:38,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 720 transitions, 5143 flow. Second operand has 103 states, 103 states have (on average 110.53398058252426) internal successors, (11385), 103 states have internal predecessors, (11385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:37:38,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:37:38,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 232 [2022-11-02 20:37:38,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand