./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.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_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/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_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/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_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/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 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 --- 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 20:55:50,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:50,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:51,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:51,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:51,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:51,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:51,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:51,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:51,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:51,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:51,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:51,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:51,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:51,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:51,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:51,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:51,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:51,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:51,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:51,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:51,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:51,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:51,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:51,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:51,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:51,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:51,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:51,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:51,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:51,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:51,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:51,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:51,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:51,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:51,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:51,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:51,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:51,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:51,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:51,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:51,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:55:51,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:51,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:51,097 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:51,097 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:51,098 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:51,098 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:51,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:51,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:51,099 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:51,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:51,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:55:51,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:51,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:55:51,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:51,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:55:51,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:51,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:55:51,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:55:51,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:55:51,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:51,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:55:51,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:51,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:51,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:51,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:51,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:51,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:51,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:55:51,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:51,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:51,104 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:55:51,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:55:51,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:55:51,105 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_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 586b4acd2b590d05e6c872ab286b63f1e9a66197df0a80de4a917f3d7db6c786 [2022-11-02 20:55:51,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:51,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:51,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:51,400 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:51,400 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:51,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-02 20:55:51,479 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/data/dad95f921/86c0b5d9480841528babf7f3c316da67/FLAG5312389d9 [2022-11-02 20:55:52,059 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:52,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c [2022-11-02 20:55:52,073 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/data/dad95f921/86c0b5d9480841528babf7f3c316da67/FLAG5312389d9 [2022-11-02 20:55:52,369 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/data/dad95f921/86c0b5d9480841528babf7f3c316da67 [2022-11-02 20:55:52,372 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:52,375 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:52,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:52,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:52,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:52,383 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c63c4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52, skipping insertion in model container [2022-11-02 20:55:52,385 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:52,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:52,675 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_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-02 20:55:52,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:52,692 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:52,737 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_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/sv-benchmarks/c/weaver/chl-nzb-file-trans.wvr.c[6450,6463] [2022-11-02 20:55:52,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:52,756 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:52,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52 WrapperNode [2022-11-02 20:55:52,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:52,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:52,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:52,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:52,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,848 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 646 [2022-11-02 20:55:52,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:52,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:52,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:52,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:52,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:52,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:52,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:52,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:52,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (1/1) ... [2022-11-02 20:55:52,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:52,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:52,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:53,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:55:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:55:53,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:55:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:55:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:55:53,024 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:55:53,024 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:55:53,026 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:55:53,026 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:55:53,027 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:55:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:55:53,027 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:55:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:53,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:53,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:55:53,030 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 20:55:53,231 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:53,232 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:54,302 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:54,316 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:54,316 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:55:54,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:54 BoogieIcfgContainer [2022-11-02 20:55:54,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:54,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:54,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:54,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:54,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:52" (1/3) ... [2022-11-02 20:55:54,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310a72d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:54, skipping insertion in model container [2022-11-02 20:55:54,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:52" (2/3) ... [2022-11-02 20:55:54,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@310a72d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:54, skipping insertion in model container [2022-11-02 20:55:54,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:54" (3/3) ... [2022-11-02 20:55:54,344 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2022-11-02 20:55:54,353 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:55:54,363 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:54,363 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:55:54,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:55:54,602 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:55:54,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 770 places, 851 transitions, 1726 flow [2022-11-02 20:55:55,240 INFO L130 PetriNetUnfolder]: 91/848 cut-off events. [2022-11-02 20:55:55,240 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:55:55,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 848 events. 91/848 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3058 event pairs, 0 based on Foata normal form. 0/756 useless extension candidates. Maximal degree in co-relation 622. Up to 2 conditions per place. [2022-11-02 20:55:55,274 INFO L82 GeneralOperation]: Start removeDead. Operand has 770 places, 851 transitions, 1726 flow [2022-11-02 20:55:55,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 756 places, 837 transitions, 1692 flow [2022-11-02 20:55:55,309 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:55,318 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;@642fff2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:55,319 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:55:55,685 INFO L130 PetriNetUnfolder]: 90/829 cut-off events. [2022-11-02 20:55:55,687 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:55:55,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:55:55,689 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, 1, 1, 1, 1, 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 20:55:55,690 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 20:55:55,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:55,697 INFO L85 PathProgramCache]: Analyzing trace with hash -80508772, now seen corresponding path program 1 times [2022-11-02 20:55:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:55,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338072045] [2022-11-02 20:55:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:55,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:56,165 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 20:55:56,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:56,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338072045] [2022-11-02 20:55:56,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338072045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:56,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:56,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:55:56,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353181403] [2022-11-02 20:55:56,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:56,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:55:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:55:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:55:56,245 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 807 out of 851 [2022-11-02 20:55:56,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 837 transitions, 1692 flow. Second operand has 2 states, 2 states have (on average 811.5) internal successors, (1623), 2 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states 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 20:55:56,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:55:56,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 807 of 851 [2022-11-02 20:55:56,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:55:56,691 INFO L130 PetriNetUnfolder]: 54/800 cut-off events. [2022-11-02 20:55:56,691 INFO L131 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-11-02 20:55:56,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 800 events. 54/800 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2956 event pairs, 0 based on Foata normal form. 60/775 useless extension candidates. Maximal degree in co-relation 597. Up to 7 conditions per place. [2022-11-02 20:55:56,729 INFO L137 encePairwiseOnDemand]: 814/851 looper letters, 6 selfloop transitions, 0 changer transitions 7/800 dead transitions. [2022-11-02 20:55:56,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 800 transitions, 1630 flow [2022-11-02 20:55:56,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:55:56,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:55:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1657 transitions. [2022-11-02 20:55:56,755 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9735605170387779 [2022-11-02 20:55:56,756 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1657 transitions. [2022-11-02 20:55:56,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1657 transitions. [2022-11-02 20:55:56,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:55:56,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1657 transitions. [2022-11-02 20:55:56,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 828.5) internal successors, (1657), 2 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states 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 20:55:56,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 851.0) internal successors, (2553), 3 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states 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 20:55:56,788 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 851.0) internal successors, (2553), 3 states have internal predecessors, (2553), 0 states have call successors, (0), 0 states 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 20:55:56,791 INFO L175 Difference]: Start difference. First operand has 756 places, 837 transitions, 1692 flow. Second operand 2 states and 1657 transitions. [2022-11-02 20:55:56,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 800 transitions, 1630 flow [2022-11-02 20:55:56,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 800 transitions, 1618 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:55:56,824 INFO L231 Difference]: Finished difference. Result has 751 places, 793 transitions, 1592 flow [2022-11-02 20:55:56,828 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1606, PETRI_DIFFERENCE_MINUEND_PLACES=750, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=800, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1592, PETRI_PLACES=751, PETRI_TRANSITIONS=793} [2022-11-02 20:55:56,832 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, -5 predicate places. [2022-11-02 20:55:56,832 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 793 transitions, 1592 flow [2022-11-02 20:55:56,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 811.5) internal successors, (1623), 2 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states 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 20:55:56,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:55:56,835 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, 1, 1, 1, 1, 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 20:55:56,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:55:56,836 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 20:55:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash -395488021, now seen corresponding path program 1 times [2022-11-02 20:55:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:56,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405471861] [2022-11-02 20:55:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:56,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:57,280 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 20:55:57,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:57,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405471861] [2022-11-02 20:55:57,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405471861] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:57,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:57,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:55:57,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167984707] [2022-11-02 20:55:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:57,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:57,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:57,288 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-11-02 20:55:57,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 793 transitions, 1592 flow. Second operand has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:57,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:55:57,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-11-02 20:55:57,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:55:58,802 INFO L130 PetriNetUnfolder]: 352/3450 cut-off events. [2022-11-02 20:55:58,804 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-11-02 20:55:58,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 3450 events. 352/3450 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 30798 event pairs, 96 based on Foata normal form. 0/3062 useless extension candidates. Maximal degree in co-relation 3767. Up to 185 conditions per place. [2022-11-02 20:55:58,907 INFO L137 encePairwiseOnDemand]: 847/851 looper letters, 33 selfloop transitions, 2 changer transitions 0/808 dead transitions. [2022-11-02 20:55:58,907 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 808 transitions, 1697 flow [2022-11-02 20:55:58,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:58,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:55:58,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-11-02 20:55:58,915 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-11-02 20:55:58,915 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-11-02 20:55:58,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-11-02 20:55:58,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:55:58,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-11-02 20:55:58,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 20:55:58,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:55:58,931 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:55:58,931 INFO L175 Difference]: Start difference. First operand has 751 places, 793 transitions, 1592 flow. Second operand 3 states and 2416 transitions. [2022-11-02 20:55:58,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 808 transitions, 1697 flow [2022-11-02 20:55:58,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 746 places, 808 transitions, 1697 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:55:58,953 INFO L231 Difference]: Finished difference. Result has 748 places, 795 transitions, 1612 flow [2022-11-02 20:55:58,954 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1592, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=791, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1612, PETRI_PLACES=748, PETRI_TRANSITIONS=795} [2022-11-02 20:55:58,955 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, -8 predicate places. [2022-11-02 20:55:58,956 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 795 transitions, 1612 flow [2022-11-02 20:55:58,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:58,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:55:58,959 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, 1, 1, 1, 1, 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 20:55:58,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:55:58,959 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 20:55:58,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:58,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1872725251, now seen corresponding path program 2 times [2022-11-02 20:55:58,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:58,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463906122] [2022-11-02 20:55:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:58,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,115 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 20:55:59,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:59,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463906122] [2022-11-02 20:55:59,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463906122] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:59,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:59,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:55:59,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979797887] [2022-11-02 20:55:59,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:59,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:59,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:59,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:59,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:59,122 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-11-02 20:55:59,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 795 transitions, 1612 flow. Second operand has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:59,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:55:59,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-11-02 20:55:59,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:00,752 INFO L130 PetriNetUnfolder]: 387/3844 cut-off events. [2022-11-02 20:56:00,753 INFO L131 PetriNetUnfolder]: For 104/111 co-relation queries the response was YES. [2022-11-02 20:56:00,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4245 conditions, 3844 events. 387/3844 cut-off events. For 104/111 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 34453 event pairs, 98 based on Foata normal form. 6/3459 useless extension candidates. Maximal degree in co-relation 4240. Up to 196 conditions per place. [2022-11-02 20:56:00,903 INFO L137 encePairwiseOnDemand]: 845/851 looper letters, 33 selfloop transitions, 4 changer transitions 0/810 dead transitions. [2022-11-02 20:56:00,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 750 places, 810 transitions, 1725 flow [2022-11-02 20:56:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:00,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:00,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-11-02 20:56:00,910 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-11-02 20:56:00,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-11-02 20:56:00,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-11-02 20:56:00,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:00,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-11-02 20:56:00,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 20:56:00,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:00,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:00,929 INFO L175 Difference]: Start difference. First operand has 748 places, 795 transitions, 1612 flow. Second operand 3 states and 2416 transitions. [2022-11-02 20:56:00,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 750 places, 810 transitions, 1725 flow [2022-11-02 20:56:00,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 810 transitions, 1723 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:00,950 INFO L231 Difference]: Finished difference. Result has 751 places, 797 transitions, 1642 flow [2022-11-02 20:56:00,951 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=795, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=791, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1642, PETRI_PLACES=751, PETRI_TRANSITIONS=797} [2022-11-02 20:56:00,952 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, -5 predicate places. [2022-11-02 20:56:00,952 INFO L495 AbstractCegarLoop]: Abstraction has has 751 places, 797 transitions, 1642 flow [2022-11-02 20:56:00,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.0) internal successors, (2391), 3 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:56:00,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:00,955 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, 1, 1, 1, 1, 1, 1, 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 20:56:00,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:56:00,955 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 20:56:00,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:00,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1761177293, now seen corresponding path program 1 times [2022-11-02 20:56:00,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:00,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039123027] [2022-11-02 20:56:00,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:00,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:01,098 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 20:56:01,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:01,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039123027] [2022-11-02 20:56:01,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039123027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:01,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:01,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:01,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544941065] [2022-11-02 20:56:01,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:01,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:01,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:01,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-11-02 20:56:01,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 797 transitions, 1642 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 20:56:01,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:01,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-11-02 20:56:01,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:03,290 INFO L130 PetriNetUnfolder]: 789/6879 cut-off events. [2022-11-02 20:56:03,290 INFO L131 PetriNetUnfolder]: For 396/463 co-relation queries the response was YES. [2022-11-02 20:56:03,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 6879 events. 789/6879 cut-off events. For 396/463 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 71153 event pairs, 210 based on Foata normal form. 4/6060 useless extension candidates. Maximal degree in co-relation 7573. Up to 390 conditions per place. [2022-11-02 20:56:03,457 INFO L137 encePairwiseOnDemand]: 845/851 looper letters, 32 selfloop transitions, 5 changer transitions 0/812 dead transitions. [2022-11-02 20:56:03,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 812 transitions, 1757 flow [2022-11-02 20:56:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:03,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:03,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2415 transitions. [2022-11-02 20:56:03,463 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9459459459459459 [2022-11-02 20:56:03,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2415 transitions. [2022-11-02 20:56:03,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2415 transitions. [2022-11-02 20:56:03,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:03,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2415 transitions. [2022-11-02 20:56:03,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states 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 20:56:03,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:03,483 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:03,483 INFO L175 Difference]: Start difference. First operand has 751 places, 797 transitions, 1642 flow. Second operand 3 states and 2415 transitions. [2022-11-02 20:56:03,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 812 transitions, 1757 flow [2022-11-02 20:56:03,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 812 transitions, 1745 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:03,502 INFO L231 Difference]: Finished difference. Result has 753 places, 800 transitions, 1675 flow [2022-11-02 20:56:03,504 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=792, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1675, PETRI_PLACES=753, PETRI_TRANSITIONS=800} [2022-11-02 20:56:03,505 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, -3 predicate places. [2022-11-02 20:56:03,510 INFO L495 AbstractCegarLoop]: Abstraction has has 753 places, 800 transitions, 1675 flow [2022-11-02 20:56:03,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 20:56:03,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:03,513 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, 1, 1, 1, 1, 1, 1, 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 20:56:03,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:56:03,513 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 20:56:03,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:03,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1465338821, now seen corresponding path program 1 times [2022-11-02 20:56:03,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:03,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820391140] [2022-11-02 20:56:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:03,651 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 20:56:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:03,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820391140] [2022-11-02 20:56:03,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820391140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:03,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:03,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:03,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096574777] [2022-11-02 20:56:03,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:03,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:03,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:03,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:03,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:03,657 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-11-02 20:56:03,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 800 transitions, 1675 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 20:56:03,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:03,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-11-02 20:56:03,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:05,141 INFO L130 PetriNetUnfolder]: 292/3140 cut-off events. [2022-11-02 20:56:05,142 INFO L131 PetriNetUnfolder]: For 320/389 co-relation queries the response was YES. [2022-11-02 20:56:05,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 3140 events. 292/3140 cut-off events. For 320/389 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 28003 event pairs, 72 based on Foata normal form. 8/2876 useless extension candidates. Maximal degree in co-relation 3658. Up to 184 conditions per place. [2022-11-02 20:56:05,288 INFO L137 encePairwiseOnDemand]: 847/851 looper letters, 35 selfloop transitions, 4 changer transitions 0/816 dead transitions. [2022-11-02 20:56:05,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 755 places, 816 transitions, 1800 flow [2022-11-02 20:56:05,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:05,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-11-02 20:56:05,295 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-11-02 20:56:05,295 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-11-02 20:56:05,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-11-02 20:56:05,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:05,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-11-02 20:56:05,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 20:56:05,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:05,329 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:05,330 INFO L175 Difference]: Start difference. First operand has 753 places, 800 transitions, 1675 flow. Second operand 3 states and 2416 transitions. [2022-11-02 20:56:05,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 755 places, 816 transitions, 1800 flow [2022-11-02 20:56:05,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 816 transitions, 1788 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:05,521 INFO L231 Difference]: Finished difference. Result has 755 places, 803 transitions, 1707 flow [2022-11-02 20:56:05,522 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=800, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=796, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1707, PETRI_PLACES=755, PETRI_TRANSITIONS=803} [2022-11-02 20:56:05,523 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, -1 predicate places. [2022-11-02 20:56:05,525 INFO L495 AbstractCegarLoop]: Abstraction has has 755 places, 803 transitions, 1707 flow [2022-11-02 20:56:05,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 20:56:05,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:05,527 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, 1, 1, 1, 1, 1, 1, 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 20:56:05,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:56:05,527 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 20:56:05,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:05,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1307206399, now seen corresponding path program 2 times [2022-11-02 20:56:05,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:05,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270182207] [2022-11-02 20:56:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:05,642 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 20:56:05,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:05,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270182207] [2022-11-02 20:56:05,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270182207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:05,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:05,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:05,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411970692] [2022-11-02 20:56:05,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:05,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:05,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:05,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:05,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:05,649 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-11-02 20:56:05,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 803 transitions, 1707 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 20:56:05,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:05,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-11-02 20:56:05,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:06,859 INFO L130 PetriNetUnfolder]: 269/3037 cut-off events. [2022-11-02 20:56:06,859 INFO L131 PetriNetUnfolder]: For 592/650 co-relation queries the response was YES. [2022-11-02 20:56:06,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3646 conditions, 3037 events. 269/3037 cut-off events. For 592/650 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 27078 event pairs, 80 based on Foata normal form. 8/2792 useless extension candidates. Maximal degree in co-relation 3638. Up to 201 conditions per place. [2022-11-02 20:56:06,958 INFO L137 encePairwiseOnDemand]: 845/851 looper letters, 37 selfloop transitions, 5 changer transitions 0/818 dead transitions. [2022-11-02 20:56:06,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 818 transitions, 1837 flow [2022-11-02 20:56:06,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:06,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2416 transitions. [2022-11-02 20:56:06,964 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9463376419898158 [2022-11-02 20:56:06,964 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2416 transitions. [2022-11-02 20:56:06,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2416 transitions. [2022-11-02 20:56:06,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:06,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2416 transitions. [2022-11-02 20:56:06,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.3333333333334) internal successors, (2416), 3 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states 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 20:56:06,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:06,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:06,977 INFO L175 Difference]: Start difference. First operand has 755 places, 803 transitions, 1707 flow. Second operand 3 states and 2416 transitions. [2022-11-02 20:56:06,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 818 transitions, 1837 flow [2022-11-02 20:56:06,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 818 transitions, 1833 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:06,997 INFO L231 Difference]: Finished difference. Result has 758 places, 805 transitions, 1752 flow [2022-11-02 20:56:06,998 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1697, PETRI_DIFFERENCE_MINUEND_PLACES=754, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=802, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=797, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1752, PETRI_PLACES=758, PETRI_TRANSITIONS=805} [2022-11-02 20:56:07,001 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 2 predicate places. [2022-11-02 20:56:07,001 INFO L495 AbstractCegarLoop]: Abstraction has has 758 places, 805 transitions, 1752 flow [2022-11-02 20:56:07,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 20:56:07,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:07,002 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, 1, 1, 1, 1, 1, 1, 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 20:56:07,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:56:07,003 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 20:56:07,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:07,004 INFO L85 PathProgramCache]: Analyzing trace with hash 848703073, now seen corresponding path program 2 times [2022-11-02 20:56:07,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:07,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738243021] [2022-11-02 20:56:07,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:07,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:07,116 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 20:56:07,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:07,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738243021] [2022-11-02 20:56:07,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738243021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:07,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:07,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:07,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049205877] [2022-11-02 20:56:07,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:07,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:07,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:07,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:07,129 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 793 out of 851 [2022-11-02 20:56:07,132 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 805 transitions, 1752 flow. Second operand has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 20:56:07,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:07,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 793 of 851 [2022-11-02 20:56:07,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:08,888 INFO L130 PetriNetUnfolder]: 792/7438 cut-off events. [2022-11-02 20:56:08,888 INFO L131 PetriNetUnfolder]: For 835/928 co-relation queries the response was YES. [2022-11-02 20:56:09,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8401 conditions, 7438 events. 792/7438 cut-off events. For 835/928 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 78720 event pairs, 219 based on Foata normal form. 12/6638 useless extension candidates. Maximal degree in co-relation 8392. Up to 409 conditions per place. [2022-11-02 20:56:09,037 INFO L137 encePairwiseOnDemand]: 847/851 looper letters, 36 selfloop transitions, 4 changer transitions 0/817 dead transitions. [2022-11-02 20:56:09,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 760 places, 817 transitions, 1864 flow [2022-11-02 20:56:09,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:09,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:09,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2415 transitions. [2022-11-02 20:56:09,045 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9459459459459459 [2022-11-02 20:56:09,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2415 transitions. [2022-11-02 20:56:09,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2415 transitions. [2022-11-02 20:56:09,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:09,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2415 transitions. [2022-11-02 20:56:09,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 805.0) internal successors, (2415), 3 states have internal predecessors, (2415), 0 states have call successors, (0), 0 states 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 20:56:09,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:09,063 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:09,064 INFO L175 Difference]: Start difference. First operand has 758 places, 805 transitions, 1752 flow. Second operand 3 states and 2415 transitions. [2022-11-02 20:56:09,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 760 places, 817 transitions, 1864 flow [2022-11-02 20:56:09,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 758 places, 817 transitions, 1848 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-02 20:56:09,085 INFO L231 Difference]: Finished difference. Result has 760 places, 805 transitions, 1768 flow [2022-11-02 20:56:09,087 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=803, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=799, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1768, PETRI_PLACES=760, PETRI_TRANSITIONS=805} [2022-11-02 20:56:09,087 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 4 predicate places. [2022-11-02 20:56:09,088 INFO L495 AbstractCegarLoop]: Abstraction has has 760 places, 805 transitions, 1768 flow [2022-11-02 20:56:09,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 797.3333333333334) internal successors, (2392), 3 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states 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 20:56:09,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:09,089 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:09,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:56:09,090 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 20:56:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 323817929, now seen corresponding path program 1 times [2022-11-02 20:56:09,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:09,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269909665] [2022-11-02 20:56:09,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:09,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:09,314 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 20:56:09,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:09,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269909665] [2022-11-02 20:56:09,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269909665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:09,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:09,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:56:09,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678685091] [2022-11-02 20:56:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:09,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:56:09,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:56:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:56:09,323 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 774 out of 851 [2022-11-02 20:56:09,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 760 places, 805 transitions, 1768 flow. Second operand has 5 states, 5 states have (on average 779.4) internal successors, (3897), 5 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states 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 20:56:09,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:09,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 774 of 851 [2022-11-02 20:56:09,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:09,853 INFO L130 PetriNetUnfolder]: 54/1036 cut-off events. [2022-11-02 20:56:09,853 INFO L131 PetriNetUnfolder]: For 136/174 co-relation queries the response was YES. [2022-11-02 20:56:09,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 1036 events. 54/1036 cut-off events. For 136/174 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5321 event pairs, 0 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 1190. Up to 55 conditions per place. [2022-11-02 20:56:09,889 INFO L137 encePairwiseOnDemand]: 836/851 looper letters, 39 selfloop transitions, 12 changer transitions 0/817 dead transitions. [2022-11-02 20:56:09,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 817 transitions, 1894 flow [2022-11-02 20:56:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:56:09,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:56:09,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3924 transitions. [2022-11-02 20:56:09,896 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9222091656874265 [2022-11-02 20:56:09,896 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3924 transitions. [2022-11-02 20:56:09,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3924 transitions. [2022-11-02 20:56:09,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:09,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3924 transitions. [2022-11-02 20:56:09,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 784.8) internal successors, (3924), 5 states have internal predecessors, (3924), 0 states have call successors, (0), 0 states 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 20:56:09,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 851.0) internal successors, (5106), 6 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states 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 20:56:09,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 851.0) internal successors, (5106), 6 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states 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 20:56:09,922 INFO L175 Difference]: Start difference. First operand has 760 places, 805 transitions, 1768 flow. Second operand 5 states and 3924 transitions. [2022-11-02 20:56:09,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 817 transitions, 1894 flow [2022-11-02 20:56:09,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 763 places, 817 transitions, 1886 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:09,942 INFO L231 Difference]: Finished difference. Result has 764 places, 808 transitions, 1808 flow [2022-11-02 20:56:09,943 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1760, PETRI_DIFFERENCE_MINUEND_PLACES=759, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=793, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1808, PETRI_PLACES=764, PETRI_TRANSITIONS=808} [2022-11-02 20:56:09,944 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 8 predicate places. [2022-11-02 20:56:09,944 INFO L495 AbstractCegarLoop]: Abstraction has has 764 places, 808 transitions, 1808 flow [2022-11-02 20:56:09,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 779.4) internal successors, (3897), 5 states have internal predecessors, (3897), 0 states have call successors, (0), 0 states 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 20:56:09,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:09,947 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:09,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:56:09,947 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 20:56:09,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:09,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1985403051, now seen corresponding path program 1 times [2022-11-02 20:56:09,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:09,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234699377] [2022-11-02 20:56:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:09,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:10,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:10,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234699377] [2022-11-02 20:56:10,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234699377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:10,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907076109] [2022-11-02 20:56:10,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:10,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:10,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:10,286 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:10,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:56:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:56:10,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:10,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:10,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:10,887 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:56:10,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907076109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:10,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:10,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-02 20:56:10,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009835147] [2022-11-02 20:56:10,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:10,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:56:10,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:56:10,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:56:10,907 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 771 out of 851 [2022-11-02 20:56:10,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 808 transitions, 1808 flow. Second operand has 15 states, 15 states have (on average 775.0666666666667) internal successors, (11626), 15 states have internal predecessors, (11626), 0 states have call successors, (0), 0 states 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 20:56:10,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:10,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 771 of 851 [2022-11-02 20:56:10,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:11,693 INFO L130 PetriNetUnfolder]: 54/1060 cut-off events. [2022-11-02 20:56:11,693 INFO L131 PetriNetUnfolder]: For 127/164 co-relation queries the response was YES. [2022-11-02 20:56:11,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1271 conditions, 1060 events. 54/1060 cut-off events. For 127/164 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5315 event pairs, 0 based on Foata normal form. 6/987 useless extension candidates. Maximal degree in co-relation 1260. Up to 46 conditions per place. [2022-11-02 20:56:11,736 INFO L137 encePairwiseOnDemand]: 827/851 looper letters, 42 selfloop transitions, 33 changer transitions 0/838 dead transitions. [2022-11-02 20:56:11,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 838 transitions, 2024 flow [2022-11-02 20:56:11,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:56:11,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:56:11,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 8562 transitions. [2022-11-02 20:56:11,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9146458711676103 [2022-11-02 20:56:11,757 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 8562 transitions. [2022-11-02 20:56:11,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 8562 transitions. [2022-11-02 20:56:11,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:11,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 8562 transitions. [2022-11-02 20:56:11,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 778.3636363636364) internal successors, (8562), 11 states have internal predecessors, (8562), 0 states have call successors, (0), 0 states 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 20:56:11,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 851.0) internal successors, (10212), 12 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states 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 20:56:11,804 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 851.0) internal successors, (10212), 12 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states 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 20:56:11,804 INFO L175 Difference]: Start difference. First operand has 764 places, 808 transitions, 1808 flow. Second operand 11 states and 8562 transitions. [2022-11-02 20:56:11,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 838 transitions, 2024 flow [2022-11-02 20:56:11,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 838 transitions, 2006 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:56:11,824 INFO L231 Difference]: Finished difference. Result has 774 places, 826 transitions, 1957 flow [2022-11-02 20:56:11,825 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=761, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=784, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1957, PETRI_PLACES=774, PETRI_TRANSITIONS=826} [2022-11-02 20:56:11,826 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 18 predicate places. [2022-11-02 20:56:11,827 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 826 transitions, 1957 flow [2022-11-02 20:56:11,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 775.0666666666667) internal successors, (11626), 15 states have internal predecessors, (11626), 0 states have call successors, (0), 0 states 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 20:56:11,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:11,832 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:11,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:12,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:12,047 INFO L420 AbstractCegarLoop]: === Iteration 10 === 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 20:56:12,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:12,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1938757710, now seen corresponding path program 1 times [2022-11-02 20:56:12,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:12,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469461390] [2022-11-02 20:56:12,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:12,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:12,604 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:56:12,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:12,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469461390] [2022-11-02 20:56:12,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469461390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:12,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123670068] [2022-11-02 20:56:12,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:12,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:12,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:12,610 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:12,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:56:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:12,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:56:12,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:56:13,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-02 20:56:13,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123670068] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:13,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:13,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-02 20:56:13,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958592623] [2022-11-02 20:56:13,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:13,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:56:13,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:13,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:56:13,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:56:13,291 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 771 out of 851 [2022-11-02 20:56:13,312 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 826 transitions, 1957 flow. Second operand has 22 states, 22 states have (on average 774.6818181818181) internal successors, (17043), 22 states have internal predecessors, (17043), 0 states have call successors, (0), 0 states 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 20:56:13,312 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:13,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 771 of 851 [2022-11-02 20:56:13,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:14,389 INFO L130 PetriNetUnfolder]: 54/1096 cut-off events. [2022-11-02 20:56:14,389 INFO L131 PetriNetUnfolder]: For 179/216 co-relation queries the response was YES. [2022-11-02 20:56:14,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 1096 events. 54/1096 cut-off events. For 179/216 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5332 event pairs, 0 based on Foata normal form. 6/1023 useless extension candidates. Maximal degree in co-relation 1427. Up to 46 conditions per place. [2022-11-02 20:56:14,421 INFO L137 encePairwiseOnDemand]: 827/851 looper letters, 54 selfloop transitions, 51 changer transitions 0/868 dead transitions. [2022-11-02 20:56:14,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 790 places, 868 transitions, 2347 flow [2022-11-02 20:56:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:56:14,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:56:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 13218 transitions. [2022-11-02 20:56:14,451 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9136655837423101 [2022-11-02 20:56:14,451 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 13218 transitions. [2022-11-02 20:56:14,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 13218 transitions. [2022-11-02 20:56:14,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:14,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 13218 transitions. [2022-11-02 20:56:14,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 777.5294117647059) internal successors, (13218), 17 states have internal predecessors, (13218), 0 states have call successors, (0), 0 states 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 20:56:14,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 851.0) internal successors, (15318), 18 states have internal predecessors, (15318), 0 states have call successors, (0), 0 states 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 20:56:14,518 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 851.0) internal successors, (15318), 18 states have internal predecessors, (15318), 0 states have call successors, (0), 0 states 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 20:56:14,519 INFO L175 Difference]: Start difference. First operand has 774 places, 826 transitions, 1957 flow. Second operand 17 states and 13218 transitions. [2022-11-02 20:56:14,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 790 places, 868 transitions, 2347 flow [2022-11-02 20:56:14,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 868 transitions, 2310 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-02 20:56:14,541 INFO L231 Difference]: Finished difference. Result has 790 places, 847 transitions, 2195 flow [2022-11-02 20:56:14,543 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=1932, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2195, PETRI_PLACES=790, PETRI_TRANSITIONS=847} [2022-11-02 20:56:14,544 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 34 predicate places. [2022-11-02 20:56:14,544 INFO L495 AbstractCegarLoop]: Abstraction has has 790 places, 847 transitions, 2195 flow [2022-11-02 20:56:14,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 774.6818181818181) internal successors, (17043), 22 states have internal predecessors, (17043), 0 states have call successors, (0), 0 states 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 20:56:14,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:14,551 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:14,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:14,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9337ef8f-dbdd-4050-851d-6b66d8ff88f2/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:14,767 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 20:56:14,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:14,767 INFO L85 PathProgramCache]: Analyzing trace with hash 603975358, now seen corresponding path program 2 times [2022-11-02 20:56:14,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:14,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082303145] [2022-11-02 20:56:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:14,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:15,133 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-02 20:56:15,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:15,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082303145] [2022-11-02 20:56:15,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082303145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:15,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:15,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:15,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504899972] [2022-11-02 20:56:15,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:15,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:15,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:15,139 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-11-02 20:56:15,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 790 places, 847 transitions, 2195 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states 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 20:56:15,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:15,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-11-02 20:56:15,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:18,109 INFO L130 PetriNetUnfolder]: 492/6710 cut-off events. [2022-11-02 20:56:18,109 INFO L131 PetriNetUnfolder]: For 725/834 co-relation queries the response was YES. [2022-11-02 20:56:18,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7581 conditions, 6710 events. 492/6710 cut-off events. For 725/834 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 63806 event pairs, 26 based on Foata normal form. 0/6035 useless extension candidates. Maximal degree in co-relation 7564. Up to 103 conditions per place. [2022-11-02 20:56:18,362 INFO L137 encePairwiseOnDemand]: 846/851 looper letters, 29 selfloop transitions, 4 changer transitions 0/857 dead transitions. [2022-11-02 20:56:18,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 792 places, 857 transitions, 2286 flow [2022-11-02 20:56:18,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:18,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:18,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2404 transitions. [2022-11-02 20:56:18,368 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9416372894633764 [2022-11-02 20:56:18,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2404 transitions. [2022-11-02 20:56:18,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2404 transitions. [2022-11-02 20:56:18,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:18,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2404 transitions. [2022-11-02 20:56:18,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 801.3333333333334) internal successors, (2404), 3 states have internal predecessors, (2404), 0 states have call successors, (0), 0 states 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 20:56:18,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:18,381 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:18,381 INFO L175 Difference]: Start difference. First operand has 790 places, 847 transitions, 2195 flow. Second operand 3 states and 2404 transitions. [2022-11-02 20:56:18,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 792 places, 857 transitions, 2286 flow [2022-11-02 20:56:18,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 784 places, 857 transitions, 2219 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-02 20:56:18,409 INFO L231 Difference]: Finished difference. Result has 785 places, 848 transitions, 2146 flow [2022-11-02 20:56:18,411 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2128, PETRI_DIFFERENCE_MINUEND_PLACES=782, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=847, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2146, PETRI_PLACES=785, PETRI_TRANSITIONS=848} [2022-11-02 20:56:18,411 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 29 predicate places. [2022-11-02 20:56:18,411 INFO L495 AbstractCegarLoop]: Abstraction has has 785 places, 848 transitions, 2146 flow [2022-11-02 20:56:18,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states 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 20:56:18,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:18,413 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 20:56:18,413 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 20:56:18,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:18,414 INFO L85 PathProgramCache]: Analyzing trace with hash 748666035, now seen corresponding path program 2 times [2022-11-02 20:56:18,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:18,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948068909] [2022-11-02 20:56:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:18,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-02 20:56:18,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:18,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948068909] [2022-11-02 20:56:18,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948068909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:18,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:18,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:18,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654432437] [2022-11-02 20:56:18,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:18,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:18,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:18,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:18,858 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-11-02 20:56:18,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 785 places, 848 transitions, 2146 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states 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 20:56:18,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:18,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-11-02 20:56:18,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:21,189 INFO L130 PetriNetUnfolder]: 376/4568 cut-off events. [2022-11-02 20:56:21,189 INFO L131 PetriNetUnfolder]: For 625/750 co-relation queries the response was YES. [2022-11-02 20:56:21,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5386 conditions, 4568 events. 376/4568 cut-off events. For 625/750 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 42161 event pairs, 67 based on Foata normal form. 2/4101 useless extension candidates. Maximal degree in co-relation 5368. Up to 211 conditions per place. [2022-11-02 20:56:21,426 INFO L137 encePairwiseOnDemand]: 846/851 looper letters, 28 selfloop transitions, 4 changer transitions 0/857 dead transitions. [2022-11-02 20:56:21,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 857 transitions, 2232 flow [2022-11-02 20:56:21,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:21,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:21,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2403 transitions. [2022-11-02 20:56:21,433 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9412455934195064 [2022-11-02 20:56:21,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2403 transitions. [2022-11-02 20:56:21,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2403 transitions. [2022-11-02 20:56:21,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:21,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2403 transitions. [2022-11-02 20:56:21,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 801.0) internal successors, (2403), 3 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states 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 20:56:21,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:21,441 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:21,441 INFO L175 Difference]: Start difference. First operand has 785 places, 848 transitions, 2146 flow. Second operand 3 states and 2403 transitions. [2022-11-02 20:56:21,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 787 places, 857 transitions, 2232 flow [2022-11-02 20:56:21,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 857 transitions, 2228 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:21,460 INFO L231 Difference]: Finished difference. Result has 787 places, 849 transitions, 2160 flow [2022-11-02 20:56:21,461 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=784, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=848, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=844, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2160, PETRI_PLACES=787, PETRI_TRANSITIONS=849} [2022-11-02 20:56:21,461 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 31 predicate places. [2022-11-02 20:56:21,461 INFO L495 AbstractCegarLoop]: Abstraction has has 787 places, 849 transitions, 2160 flow [2022-11-02 20:56:21,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states 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 20:56:21,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:21,462 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:21,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 20:56:21,463 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 20:56:21,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash -959893208, now seen corresponding path program 1 times [2022-11-02 20:56:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:21,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196159086] [2022-11-02 20:56:21,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:21,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:21,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-02 20:56:21,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:21,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196159086] [2022-11-02 20:56:21,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196159086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:21,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:21,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:56:21,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659927477] [2022-11-02 20:56:21,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:21,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:56:21,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:21,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:56:21,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:56:21,745 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 790 out of 851 [2022-11-02 20:56:21,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 787 places, 849 transitions, 2160 flow. Second operand has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states 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 20:56:21,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:21,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 790 of 851 [2022-11-02 20:56:21,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:23,639 INFO L130 PetriNetUnfolder]: 714/5676 cut-off events. [2022-11-02 20:56:23,640 INFO L131 PetriNetUnfolder]: For 593/680 co-relation queries the response was YES. [2022-11-02 20:56:23,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6750 conditions, 5676 events. 714/5676 cut-off events. For 593/680 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 56051 event pairs, 252 based on Foata normal form. 0/4859 useless extension candidates. Maximal degree in co-relation 6731. Up to 604 conditions per place. [2022-11-02 20:56:23,829 INFO L137 encePairwiseOnDemand]: 846/851 looper letters, 27 selfloop transitions, 4 changer transitions 0/857 dead transitions. [2022-11-02 20:56:23,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 857 transitions, 2241 flow [2022-11-02 20:56:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:56:23,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:56:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2402 transitions. [2022-11-02 20:56:23,834 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9408538973756365 [2022-11-02 20:56:23,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2402 transitions. [2022-11-02 20:56:23,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2402 transitions. [2022-11-02 20:56:23,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:23,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2402 transitions. [2022-11-02 20:56:23,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 800.6666666666666) internal successors, (2402), 3 states have internal predecessors, (2402), 0 states have call successors, (0), 0 states 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 20:56:23,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:23,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 851.0) internal successors, (3404), 4 states have internal predecessors, (3404), 0 states have call successors, (0), 0 states 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 20:56:23,843 INFO L175 Difference]: Start difference. First operand has 787 places, 849 transitions, 2160 flow. Second operand 3 states and 2402 transitions. [2022-11-02 20:56:23,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 857 transitions, 2241 flow [2022-11-02 20:56:23,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 788 places, 857 transitions, 2237 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:23,862 INFO L231 Difference]: Finished difference. Result has 789 places, 850 transitions, 2174 flow [2022-11-02 20:56:23,864 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=845, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2174, PETRI_PLACES=789, PETRI_TRANSITIONS=850} [2022-11-02 20:56:23,864 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 33 predicate places. [2022-11-02 20:56:23,865 INFO L495 AbstractCegarLoop]: Abstraction has has 789 places, 850 transitions, 2174 flow [2022-11-02 20:56:23,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 793.6666666666666) internal successors, (2381), 3 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states 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 20:56:23,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:23,866 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:23,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 20:56:23,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 20:56:23,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:23,867 INFO L85 PathProgramCache]: Analyzing trace with hash -22832146, now seen corresponding path program 1 times [2022-11-02 20:56:23,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:23,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151586360] [2022-11-02 20:56:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:23,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:24,272 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-02 20:56:24,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:24,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151586360] [2022-11-02 20:56:24,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151586360] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:24,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:24,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:56:24,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431848447] [2022-11-02 20:56:24,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:24,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:56:24,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:56:24,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:56:24,281 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 736 out of 851 [2022-11-02 20:56:24,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 789 places, 850 transitions, 2174 flow. Second operand has 7 states, 7 states have (on average 742.4285714285714) internal successors, (5197), 7 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states 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 20:56:24,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:24,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 736 of 851 [2022-11-02 20:56:24,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:56:52,853 INFO L130 PetriNetUnfolder]: 18326/94686 cut-off events. [2022-11-02 20:56:52,853 INFO L131 PetriNetUnfolder]: For 1733/1801 co-relation queries the response was YES. [2022-11-02 20:56:54,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114443 conditions, 94686 events. 18326/94686 cut-off events. For 1733/1801 co-relation queries the response was YES. Maximal size of possible extension queue 1594. Compared 1429224 event pairs, 7621 based on Foata normal form. 8/82553 useless extension candidates. Maximal degree in co-relation 114423. Up to 14654 conditions per place. [2022-11-02 20:56:54,457 INFO L137 encePairwiseOnDemand]: 843/851 looper letters, 129 selfloop transitions, 5 changer transitions 4/918 dead transitions. [2022-11-02 20:56:54,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 796 places, 918 transitions, 2595 flow [2022-11-02 20:56:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:56:54,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 6027 transitions. [2022-11-02 20:56:54,464 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8852820211515864 [2022-11-02 20:56:54,464 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 6027 transitions. [2022-11-02 20:56:54,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 6027 transitions. [2022-11-02 20:56:54,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:56:54,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 6027 transitions. [2022-11-02 20:56:54,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 753.375) internal successors, (6027), 8 states have internal predecessors, (6027), 0 states have call successors, (0), 0 states 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 20:56:54,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 851.0) internal successors, (7659), 9 states have internal predecessors, (7659), 0 states have call successors, (0), 0 states 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 20:56:54,483 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 851.0) internal successors, (7659), 9 states have internal predecessors, (7659), 0 states have call successors, (0), 0 states 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 20:56:54,483 INFO L175 Difference]: Start difference. First operand has 789 places, 850 transitions, 2174 flow. Second operand 8 states and 6027 transitions. [2022-11-02 20:56:54,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 796 places, 918 transitions, 2595 flow [2022-11-02 20:56:54,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 795 places, 918 transitions, 2591 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-02 20:56:54,508 INFO L231 Difference]: Finished difference. Result has 800 places, 852 transitions, 2199 flow [2022-11-02 20:56:54,509 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=851, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=788, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=850, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=845, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2199, PETRI_PLACES=800, PETRI_TRANSITIONS=852} [2022-11-02 20:56:54,510 INFO L287 CegarLoopForPetriNet]: 756 programPoint places, 44 predicate places. [2022-11-02 20:56:54,510 INFO L495 AbstractCegarLoop]: Abstraction has has 800 places, 852 transitions, 2199 flow [2022-11-02 20:56:54,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 742.4285714285714) internal successors, (5197), 7 states have internal predecessors, (5197), 0 states have call successors, (0), 0 states 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 20:56:54,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:56:54,512 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:56:54,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 20:56:54,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 20:56:54,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 409439216, now seen corresponding path program 1 times [2022-11-02 20:56:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:54,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489927085] [2022-11-02 20:56:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:54,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-02 20:56:55,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:55,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489927085] [2022-11-02 20:56:55,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489927085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:55,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:55,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:56:55,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973315245] [2022-11-02 20:56:55,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:55,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:56:55,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:55,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:56:55,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:56:55,035 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 851 [2022-11-02 20:56:55,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 852 transitions, 2199 flow. Second operand has 6 states, 6 states have (on average 751.6666666666666) internal successors, (4510), 6 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states 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 20:56:55,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:56:55,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 851 [2022-11-02 20:56:55,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand