./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.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_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/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_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/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_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- 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 20:25:05,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:25:05,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:25:05,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:25:05,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:25:05,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:25:05,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:25:05,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:25:05,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:25:05,707 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:25:05,708 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:25:05,709 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:25:05,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:25:05,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:25:05,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:25:05,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:25:05,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:25:05,714 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:25:05,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:25:05,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:25:05,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:25:05,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:25:05,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:25:05,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:25:05,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:25:05,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:25:05,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:25:05,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:25:05,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:25:05,729 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:25:05,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:25:05,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:25:05,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:25:05,732 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:25:05,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:25:05,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:25:05,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:25:05,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:25:05,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:25:05,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:25:05,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:25:05,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:25:05,765 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:25:05,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:25:05,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:25:05,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:25:05,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:25:05,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:25:05,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:25:05,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:25:05,777 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:25:05,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:25:05,779 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:25:05,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:25:05,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:25:05,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:25:05,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:25:05,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:25:05,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:25:05,780 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:25:05,780 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:25:05,780 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:25:05,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:25:05,781 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:25:05,781 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:25:05,781 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:25:05,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:25:05,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:25:05,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:25:05,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:25:05,784 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:25:05,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:25:05,784 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:25:05,784 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:25:05,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:25:05,785 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_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-11-02 20:25:06,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:25:06,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:25:06,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:25:06,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:25:06,148 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:25:06,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-02 20:25:06,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/data/6d6f334cf/f3c94f161edf44958383882285522f76/FLAG3ee00f585 [2022-11-02 20:25:06,745 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:25:06,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-11-02 20:25:06,752 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/data/6d6f334cf/f3c94f161edf44958383882285522f76/FLAG3ee00f585 [2022-11-02 20:25:07,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/data/6d6f334cf/f3c94f161edf44958383882285522f76 [2022-11-02 20:25:07,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:25:07,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:25:07,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:25:07,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:25:07,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:25:07,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18f342c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07, skipping insertion in model container [2022-11-02 20:25:07,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:25:07,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:25:07,372 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_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-02 20:25:07,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:25:07,422 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:25:07,478 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_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-11-02 20:25:07,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:25:07,516 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:25:07,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07 WrapperNode [2022-11-02 20:25:07,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:25:07,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:25:07,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:25:07,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:25:07,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,581 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 369 [2022-11-02 20:25:07,581 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:25:07,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:25:07,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:25:07,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:25:07,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,613 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:25:07,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:25:07,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:25:07,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:25:07,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (1/1) ... [2022-11-02 20:25:07,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:25:07,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:25:07,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:25:07,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:25:07,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:25:07,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:25:07,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:25:07,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:25:07,696 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:25:07,696 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:25:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:25:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:25:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:25:07,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:25:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:25:07,697 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:25:07,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:25:07,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:25:07,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:25:07,699 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 20:25:07,860 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:25:07,863 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:25:08,534 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:25:08,559 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:25:08,559 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-02 20:25:08,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:25:08 BoogieIcfgContainer [2022-11-02 20:25:08,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:25:08,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:25:08,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:25:08,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:25:08,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:25:07" (1/3) ... [2022-11-02 20:25:08,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d1c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:25:08, skipping insertion in model container [2022-11-02 20:25:08,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:25:07" (2/3) ... [2022-11-02 20:25:08,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@706d1c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:25:08, skipping insertion in model container [2022-11-02 20:25:08,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:25:08" (3/3) ... [2022-11-02 20:25:08,577 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-11-02 20:25:08,589 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:25:08,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:25:08,610 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:25:08,611 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:25:08,733 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:25:08,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 465 transitions, 954 flow [2022-11-02 20:25:09,044 INFO L130 PetriNetUnfolder]: 44/462 cut-off events. [2022-11-02 20:25:09,044 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:25:09,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 462 events. 44/462 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1304 event pairs, 0 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 334. Up to 2 conditions per place. [2022-11-02 20:25:09,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 465 transitions, 954 flow [2022-11-02 20:25:09,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 451 transitions, 920 flow [2022-11-02 20:25:09,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:25:09,082 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;@342fe177, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:25:09,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:25:09,226 INFO L130 PetriNetUnfolder]: 44/450 cut-off events. [2022-11-02 20:25:09,226 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:25:09,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:09,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:09,228 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 20:25:09,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1447824840, now seen corresponding path program 1 times [2022-11-02 20:25:09,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:09,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799280450] [2022-11-02 20:25:09,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:09,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:09,716 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 20:25:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:09,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799280450] [2022-11-02 20:25:09,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799280450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:09,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:09,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:25:09,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125679451] [2022-11-02 20:25:09,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:09,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:25:09,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:25:09,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:25:09,784 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 439 out of 465 [2022-11-02 20:25:09,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 451 transitions, 920 flow. Second operand has 2 states, 2 states have (on average 444.0) internal successors, (888), 2 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 20:25:09,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:09,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 439 of 465 [2022-11-02 20:25:09,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:09,959 INFO L130 PetriNetUnfolder]: 25/432 cut-off events. [2022-11-02 20:25:09,959 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-11-02 20:25:09,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 452 conditions, 432 events. 25/432 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1277 event pairs, 0 based on Foata normal form. 32/424 useless extension candidates. Maximal degree in co-relation 323. Up to 7 conditions per place. [2022-11-02 20:25:09,970 INFO L137 encePairwiseOnDemand]: 446/465 looper letters, 6 selfloop transitions, 0 changer transitions 3/432 dead transitions. [2022-11-02 20:25:09,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 432 transitions, 894 flow [2022-11-02 20:25:09,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:25:09,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:25:09,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 903 transitions. [2022-11-02 20:25:09,994 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9709677419354839 [2022-11-02 20:25:09,995 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 903 transitions. [2022-11-02 20:25:09,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 903 transitions. [2022-11-02 20:25:09,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:10,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 903 transitions. [2022-11-02 20:25:10,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 451.5) internal successors, (903), 2 states have internal predecessors, (903), 0 states have call successors, (0), 0 states 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 20:25:10,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states 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 20:25:10,019 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 465.0) internal successors, (1395), 3 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states 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 20:25:10,021 INFO L175 Difference]: Start difference. First operand has 417 places, 451 transitions, 920 flow. Second operand 2 states and 903 transitions. [2022-11-02 20:25:10,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 432 transitions, 894 flow [2022-11-02 20:25:10,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 432 transitions, 882 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:25:10,035 INFO L231 Difference]: Finished difference. Result has 412 places, 429 transitions, 864 flow [2022-11-02 20:25:10,038 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=864, PETRI_PLACES=412, PETRI_TRANSITIONS=429} [2022-11-02 20:25:10,041 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, -5 predicate places. [2022-11-02 20:25:10,042 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 429 transitions, 864 flow [2022-11-02 20:25:10,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 444.0) internal successors, (888), 2 states have internal predecessors, (888), 0 states have call successors, (0), 0 states 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 20:25:10,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:10,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:10,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:25:10,044 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 20:25:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:10,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1676678338, now seen corresponding path program 1 times [2022-11-02 20:25:10,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:10,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454720916] [2022-11-02 20:25:10,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:10,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:10,271 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 20:25:10,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:10,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454720916] [2022-11-02 20:25:10,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454720916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:10,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:10,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:10,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178782629] [2022-11-02 20:25:10,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:10,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:10,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:10,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:10,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:10,276 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-11-02 20:25:10,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 429 transitions, 864 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 20:25:10,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:10,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-11-02 20:25:10,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:16,817 INFO L130 PetriNetUnfolder]: 6828/29546 cut-off events. [2022-11-02 20:25:16,817 INFO L131 PetriNetUnfolder]: For 222/222 co-relation queries the response was YES. [2022-11-02 20:25:17,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37561 conditions, 29546 events. 6828/29546 cut-off events. For 222/222 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 403910 event pairs, 2479 based on Foata normal form. 0/24227 useless extension candidates. Maximal degree in co-relation 37558. Up to 3927 conditions per place. [2022-11-02 20:25:17,275 INFO L137 encePairwiseOnDemand]: 462/465 looper letters, 72 selfloop transitions, 2 changer transitions 0/462 dead transitions. [2022-11-02 20:25:17,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 462 transitions, 1083 flow [2022-11-02 20:25:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:25:17,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:25:17,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1287 transitions. [2022-11-02 20:25:17,281 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9225806451612903 [2022-11-02 20:25:17,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1287 transitions. [2022-11-02 20:25:17,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1287 transitions. [2022-11-02 20:25:17,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:17,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1287 transitions. [2022-11-02 20:25:17,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states 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 20:25:17,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 20:25:17,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 20:25:17,295 INFO L175 Difference]: Start difference. First operand has 412 places, 429 transitions, 864 flow. Second operand 3 states and 1287 transitions. [2022-11-02 20:25:17,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 462 transitions, 1083 flow [2022-11-02 20:25:17,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 462 transitions, 1083 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:25:17,312 INFO L231 Difference]: Finished difference. Result has 413 places, 430 transitions, 878 flow [2022-11-02 20:25:17,313 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=429, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=878, PETRI_PLACES=413, PETRI_TRANSITIONS=430} [2022-11-02 20:25:17,315 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, -4 predicate places. [2022-11-02 20:25:17,315 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 430 transitions, 878 flow [2022-11-02 20:25:17,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 20:25:17,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:17,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:17,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:25:17,318 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 20:25:17,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:17,321 INFO L85 PathProgramCache]: Analyzing trace with hash -218329502, now seen corresponding path program 1 times [2022-11-02 20:25:17,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:17,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312391216] [2022-11-02 20:25:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:17,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:17,761 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 20:25:17,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:17,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312391216] [2022-11-02 20:25:17,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312391216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:17,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:17,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:25:17,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118328049] [2022-11-02 20:25:17,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:17,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:25:17,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:17,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:25:17,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:25:17,773 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 465 [2022-11-02 20:25:17,777 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 430 transitions, 878 flow. Second operand has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states 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 20:25:17,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:17,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 465 [2022-11-02 20:25:17,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:18,044 INFO L130 PetriNetUnfolder]: 30/536 cut-off events. [2022-11-02 20:25:18,045 INFO L131 PetriNetUnfolder]: For 8/12 co-relation queries the response was YES. [2022-11-02 20:25:18,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 575 conditions, 536 events. 30/536 cut-off events. For 8/12 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1999 event pairs, 0 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 570. Up to 19 conditions per place. [2022-11-02 20:25:18,059 INFO L137 encePairwiseOnDemand]: 460/465 looper letters, 18 selfloop transitions, 4 changer transitions 0/434 dead transitions. [2022-11-02 20:25:18,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 434 transitions, 930 flow [2022-11-02 20:25:18,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:25:18,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:25:18,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2158 transitions. [2022-11-02 20:25:18,067 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9281720430107527 [2022-11-02 20:25:18,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2158 transitions. [2022-11-02 20:25:18,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2158 transitions. [2022-11-02 20:25:18,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:18,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2158 transitions. [2022-11-02 20:25:18,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.6) internal successors, (2158), 5 states have internal predecessors, (2158), 0 states have call successors, (0), 0 states 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 20:25:18,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states 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 20:25:18,086 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 465.0) internal successors, (2790), 6 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states 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 20:25:18,087 INFO L175 Difference]: Start difference. First operand has 413 places, 430 transitions, 878 flow. Second operand 5 states and 2158 transitions. [2022-11-02 20:25:18,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 434 transitions, 930 flow [2022-11-02 20:25:18,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 434 transitions, 928 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:25:18,098 INFO L231 Difference]: Finished difference. Result has 417 places, 431 transitions, 892 flow [2022-11-02 20:25:18,099 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=876, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=892, PETRI_PLACES=417, PETRI_TRANSITIONS=431} [2022-11-02 20:25:18,102 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 0 predicate places. [2022-11-02 20:25:18,102 INFO L495 AbstractCegarLoop]: Abstraction has has 417 places, 431 transitions, 892 flow [2022-11-02 20:25:18,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 429.8) internal successors, (2149), 5 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states 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 20:25:18,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:18,105 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:18,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:25:18,105 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 20:25:18,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:18,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1230526974, now seen corresponding path program 1 times [2022-11-02 20:25:18,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:18,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375359171] [2022-11-02 20:25:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:18,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:18,325 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 20:25:18,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:18,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375359171] [2022-11-02 20:25:18,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375359171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:18,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:18,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:18,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733098255] [2022-11-02 20:25:18,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:18,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:18,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:18,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:18,337 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-11-02 20:25:18,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 431 transitions, 892 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 20:25:18,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:18,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-11-02 20:25:18,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:18,982 INFO L130 PetriNetUnfolder]: 165/1500 cut-off events. [2022-11-02 20:25:18,982 INFO L131 PetriNetUnfolder]: For 55/167 co-relation queries the response was YES. [2022-11-02 20:25:19,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1738 conditions, 1500 events. 165/1500 cut-off events. For 55/167 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 11099 event pairs, 26 based on Foata normal form. 0/1330 useless extension candidates. Maximal degree in co-relation 1732. Up to 96 conditions per place. [2022-11-02 20:25:19,041 INFO L137 encePairwiseOnDemand]: 453/465 looper letters, 31 selfloop transitions, 11 changer transitions 0/448 dead transitions. [2022-11-02 20:25:19,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 448 transitions, 1016 flow [2022-11-02 20:25:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:25:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:25:19,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1723 transitions. [2022-11-02 20:25:19,045 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9263440860215054 [2022-11-02 20:25:19,045 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1723 transitions. [2022-11-02 20:25:19,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1723 transitions. [2022-11-02 20:25:19,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:19,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1723 transitions. [2022-11-02 20:25:19,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states 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 20:25:19,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states 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 20:25:19,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states 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 20:25:19,061 INFO L175 Difference]: Start difference. First operand has 417 places, 431 transitions, 892 flow. Second operand 4 states and 1723 transitions. [2022-11-02 20:25:19,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 448 transitions, 1016 flow [2022-11-02 20:25:19,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 448 transitions, 1010 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:25:19,071 INFO L231 Difference]: Finished difference. Result has 420 places, 437 transitions, 956 flow [2022-11-02 20:25:19,072 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=956, PETRI_PLACES=420, PETRI_TRANSITIONS=437} [2022-11-02 20:25:19,074 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 3 predicate places. [2022-11-02 20:25:19,075 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 437 transitions, 956 flow [2022-11-02 20:25:19,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 20:25:19,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:19,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:19,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:25:19,077 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 20:25:19,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -597943646, now seen corresponding path program 1 times [2022-11-02 20:25:19,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:19,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226032258] [2022-11-02 20:25:19,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:19,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:19,175 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 20:25:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:19,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226032258] [2022-11-02 20:25:19,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226032258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:19,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:19,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:19,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519531403] [2022-11-02 20:25:19,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:19,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:19,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:19,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:19,179 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-11-02 20:25:19,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 437 transitions, 956 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 20:25:19,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:19,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-11-02 20:25:19,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:28,865 INFO L130 PetriNetUnfolder]: 13327/56922 cut-off events. [2022-11-02 20:25:28,865 INFO L131 PetriNetUnfolder]: For 5486/5498 co-relation queries the response was YES. [2022-11-02 20:25:29,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81813 conditions, 56922 events. 13327/56922 cut-off events. For 5486/5498 co-relation queries the response was YES. Maximal size of possible extension queue 1827. Compared 861682 event pairs, 4312 based on Foata normal form. 0/48818 useless extension candidates. Maximal degree in co-relation 81805. Up to 9058 conditions per place. [2022-11-02 20:25:29,740 INFO L137 encePairwiseOnDemand]: 462/465 looper letters, 75 selfloop transitions, 2 changer transitions 0/471 dead transitions. [2022-11-02 20:25:29,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 471 transitions, 1202 flow [2022-11-02 20:25:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:25:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:25:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1286 transitions. [2022-11-02 20:25:29,745 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9218637992831541 [2022-11-02 20:25:29,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1286 transitions. [2022-11-02 20:25:29,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1286 transitions. [2022-11-02 20:25:29,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:29,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1286 transitions. [2022-11-02 20:25:29,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states 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 20:25:29,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 20:25:29,755 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 465.0) internal successors, (1860), 4 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 20:25:29,756 INFO L175 Difference]: Start difference. First operand has 420 places, 437 transitions, 956 flow. Second operand 3 states and 1286 transitions. [2022-11-02 20:25:29,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 471 transitions, 1202 flow [2022-11-02 20:25:29,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 471 transitions, 1202 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:25:29,960 INFO L231 Difference]: Finished difference. Result has 424 places, 438 transitions, 970 flow [2022-11-02 20:25:29,961 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=970, PETRI_PLACES=424, PETRI_TRANSITIONS=438} [2022-11-02 20:25:29,964 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 7 predicate places. [2022-11-02 20:25:29,964 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 438 transitions, 970 flow [2022-11-02 20:25:29,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 20:25:29,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:29,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:29,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:25:29,966 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 20:25:29,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:29,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1650739816, now seen corresponding path program 1 times [2022-11-02 20:25:29,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:29,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491769345] [2022-11-02 20:25:29,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:29,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:30,278 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 20:25:30,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:30,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491769345] [2022-11-02 20:25:30,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491769345] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:25:30,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700514912] [2022-11-02 20:25:30,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:30,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:25:30,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:25:30,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:25:30,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:25:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:30,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:25:30,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:25:30,691 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 20:25:30,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:25:30,819 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 20:25:30,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700514912] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:25:30,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:25:30,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-02 20:25:30,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338682044] [2022-11-02 20:25:30,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:25:30,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:25:30,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:30,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:25:30,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:25:30,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 465 [2022-11-02 20:25:30,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 438 transitions, 970 flow. Second operand has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states 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 20:25:30,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:30,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 465 [2022-11-02 20:25:30,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:31,290 INFO L130 PetriNetUnfolder]: 38/758 cut-off events. [2022-11-02 20:25:31,290 INFO L131 PetriNetUnfolder]: For 35/57 co-relation queries the response was YES. [2022-11-02 20:25:31,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 758 events. 38/758 cut-off events. For 35/57 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3410 event pairs, 0 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 864. Up to 28 conditions per place. [2022-11-02 20:25:31,320 INFO L137 encePairwiseOnDemand]: 457/465 looper letters, 19 selfloop transitions, 11 changer transitions 0/448 dead transitions. [2022-11-02 20:25:31,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 448 transitions, 1052 flow [2022-11-02 20:25:31,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:25:31,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:25:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4718 transitions. [2022-11-02 20:25:31,333 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9223851417399804 [2022-11-02 20:25:31,334 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4718 transitions. [2022-11-02 20:25:31,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4718 transitions. [2022-11-02 20:25:31,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:31,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4718 transitions. [2022-11-02 20:25:31,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 428.90909090909093) internal successors, (4718), 11 states have internal predecessors, (4718), 0 states have call successors, (0), 0 states 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 20:25:31,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 20:25:31,364 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 465.0) internal successors, (5580), 12 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 20:25:31,365 INFO L175 Difference]: Start difference. First operand has 424 places, 438 transitions, 970 flow. Second operand 11 states and 4718 transitions. [2022-11-02 20:25:31,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 448 transitions, 1052 flow [2022-11-02 20:25:31,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 448 transitions, 1050 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:25:31,378 INFO L231 Difference]: Finished difference. Result has 436 places, 444 transitions, 1023 flow [2022-11-02 20:25:31,379 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1023, PETRI_PLACES=436, PETRI_TRANSITIONS=444} [2022-11-02 20:25:31,381 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 19 predicate places. [2022-11-02 20:25:31,382 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 444 transitions, 1023 flow [2022-11-02 20:25:31,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 428.7857142857143) internal successors, (6003), 14 states have internal predecessors, (6003), 0 states have call successors, (0), 0 states 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 20:25:31,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:31,395 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:31,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:25:31,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e605c65-75b6-4e50-a2aa-cf1c3649e8a9/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:25:31,611 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 20:25:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:31,612 INFO L85 PathProgramCache]: Analyzing trace with hash 457992940, now seen corresponding path program 1 times [2022-11-02 20:25:31,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:31,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445910959] [2022-11-02 20:25:31,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:31,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:31,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:31,807 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:25:31,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:31,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445910959] [2022-11-02 20:25:31,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445910959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:31,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:31,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:25:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326929183] [2022-11-02 20:25:31,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:31,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:25:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:25:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:25:31,813 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 465 [2022-11-02 20:25:31,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 444 transitions, 1023 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 20:25:31,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:31,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 465 [2022-11-02 20:25:31,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:32,649 INFO L130 PetriNetUnfolder]: 371/2462 cut-off events. [2022-11-02 20:25:32,649 INFO L131 PetriNetUnfolder]: For 276/760 co-relation queries the response was YES. [2022-11-02 20:25:32,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 2462 events. 371/2462 cut-off events. For 276/760 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 22120 event pairs, 138 based on Foata normal form. 0/2082 useless extension candidates. Maximal degree in co-relation 3114. Up to 276 conditions per place. [2022-11-02 20:25:32,702 INFO L137 encePairwiseOnDemand]: 453/465 looper letters, 30 selfloop transitions, 11 changer transitions 0/460 dead transitions. [2022-11-02 20:25:32,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 460 transitions, 1142 flow [2022-11-02 20:25:32,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:25:32,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-02 20:25:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1722 transitions. [2022-11-02 20:25:32,707 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9258064516129032 [2022-11-02 20:25:32,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1722 transitions. [2022-11-02 20:25:32,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1722 transitions. [2022-11-02 20:25:32,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:32,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1722 transitions. [2022-11-02 20:25:32,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 430.5) internal successors, (1722), 4 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states 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 20:25:32,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states 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 20:25:32,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 465.0) internal successors, (2325), 5 states have internal predecessors, (2325), 0 states have call successors, (0), 0 states 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 20:25:32,717 INFO L175 Difference]: Start difference. First operand has 436 places, 444 transitions, 1023 flow. Second operand 4 states and 1722 transitions. [2022-11-02 20:25:32,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 460 transitions, 1142 flow [2022-11-02 20:25:32,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 460 transitions, 1133 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-02 20:25:32,728 INFO L231 Difference]: Finished difference. Result has 439 places, 450 transitions, 1084 flow [2022-11-02 20:25:32,729 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1084, PETRI_PLACES=439, PETRI_TRANSITIONS=450} [2022-11-02 20:25:32,730 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 22 predicate places. [2022-11-02 20:25:32,730 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 450 transitions, 1084 flow [2022-11-02 20:25:32,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states 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 20:25:32,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:32,731 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:32,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:25:32,732 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 20:25:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:32,732 INFO L85 PathProgramCache]: Analyzing trace with hash 266760556, now seen corresponding path program 2 times [2022-11-02 20:25:32,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:32,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362656024] [2022-11-02 20:25:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:32,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:33,576 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:25:33,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:33,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362656024] [2022-11-02 20:25:33,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362656024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:33,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:33,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:25:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116248852] [2022-11-02 20:25:33,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:33,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:25:33,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:33,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:25:33,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:25:33,585 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 465 [2022-11-02 20:25:33,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 450 transitions, 1084 flow. Second operand has 10 states, 10 states have (on average 399.4) internal successors, (3994), 10 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states 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 20:25:33,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:33,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 465 [2022-11-02 20:25:33,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:25:42,027 INFO L130 PetriNetUnfolder]: 6357/30647 cut-off events. [2022-11-02 20:25:42,027 INFO L131 PetriNetUnfolder]: For 2787/2803 co-relation queries the response was YES. [2022-11-02 20:25:42,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42290 conditions, 30647 events. 6357/30647 cut-off events. For 2787/2803 co-relation queries the response was YES. Maximal size of possible extension queue 1197. Compared 423214 event pairs, 2662 based on Foata normal form. 2/26829 useless extension candidates. Maximal degree in co-relation 42275. Up to 5505 conditions per place. [2022-11-02 20:25:42,964 INFO L137 encePairwiseOnDemand]: 446/465 looper letters, 125 selfloop transitions, 44 changer transitions 6/579 dead transitions. [2022-11-02 20:25:42,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 579 transitions, 1714 flow [2022-11-02 20:25:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:25:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-02 20:25:42,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7304 transitions. [2022-11-02 20:25:42,983 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8726403823178017 [2022-11-02 20:25:42,983 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7304 transitions. [2022-11-02 20:25:42,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7304 transitions. [2022-11-02 20:25:42,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:25:42,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7304 transitions. [2022-11-02 20:25:43,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 405.77777777777777) internal successors, (7304), 18 states have internal predecessors, (7304), 0 states have call successors, (0), 0 states 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 20:25:43,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 465.0) internal successors, (8835), 19 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states 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 20:25:43,029 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 465.0) internal successors, (8835), 19 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states 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 20:25:43,029 INFO L175 Difference]: Start difference. First operand has 439 places, 450 transitions, 1084 flow. Second operand 18 states and 7304 transitions. [2022-11-02 20:25:43,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 579 transitions, 1714 flow [2022-11-02 20:25:43,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 579 transitions, 1714 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:25:43,068 INFO L231 Difference]: Finished difference. Result has 472 places, 495 transitions, 1405 flow [2022-11-02 20:25:43,069 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=465, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1405, PETRI_PLACES=472, PETRI_TRANSITIONS=495} [2022-11-02 20:25:43,071 INFO L287 CegarLoopForPetriNet]: 417 programPoint places, 55 predicate places. [2022-11-02 20:25:43,072 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 495 transitions, 1405 flow [2022-11-02 20:25:43,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 399.4) internal successors, (3994), 10 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states 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 20:25:43,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:25:43,077 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:43,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:25:43,078 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 20:25:43,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:25:43,079 INFO L85 PathProgramCache]: Analyzing trace with hash -493773354, now seen corresponding path program 1 times [2022-11-02 20:25:43,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:25:43,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14900919] [2022-11-02 20:25:43,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:25:43,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:25:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:25:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-02 20:25:43,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:25:43,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14900919] [2022-11-02 20:25:43,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14900919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:25:43,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:25:43,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:25:43,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117622608] [2022-11-02 20:25:43,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:25:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:25:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:25:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:25:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:25:43,204 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 465 [2022-11-02 20:25:43,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 495 transitions, 1405 flow. Second operand has 3 states, 3 states have (on average 409.3333333333333) internal successors, (1228), 3 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states 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 20:25:43,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:25:43,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 465 [2022-11-02 20:25:43,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand