./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-5.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_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/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_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/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_ac94fd06-e47d-4f0a-88e9-b7f621801944/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 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 --- 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 21:11:17,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:11:17,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:11:17,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:11:17,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:11:17,330 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:11:17,333 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:11:17,336 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:11:17,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:11:17,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:11:17,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:11:17,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:11:17,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:11:17,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:11:17,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:11:17,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:11:17,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:11:17,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:11:17,357 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:11:17,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:11:17,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:11:17,368 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:11:17,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:11:17,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:11:17,381 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:11:17,381 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:11:17,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:11:17,384 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:11:17,384 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:11:17,386 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:11:17,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:11:17,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:11:17,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:11:17,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:11:17,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:11:17,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:11:17,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:11:17,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:11:17,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:11:17,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:11:17,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:11:17,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:11:17,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:11:17,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:11:17,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:11:17,437 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:11:17,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:11:17,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:11:17,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:11:17,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:11:17,439 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:11:17,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:11:17,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:11:17,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:11:17,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:11:17,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:11:17,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:11:17,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:11:17,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:11:17,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:11:17,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:11:17,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:11:17,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:11:17,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:11:17,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:11:17,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:11:17,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:17,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:11:17,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:11:17,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:11:17,447 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:11:17,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:11:17,448 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:11:17,448 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:11:17,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:11:17,449 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_ac94fd06-e47d-4f0a-88e9-b7f621801944/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 084d7ddce3c53222c6533ccae99969e854061e3b422eaf94457157515e3bd009 [2022-11-02 21:11:17,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:11:17,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:11:17,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:11:17,764 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:11:17,765 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:11:17,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-11-02 21:11:17,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/data/9c119c1d6/efdf6adf2c504cc495031f7df9d33279/FLAGf88133ee1 [2022-11-02 21:11:18,273 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:11:18,274 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2022-11-02 21:11:18,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/data/9c119c1d6/efdf6adf2c504cc495031f7df9d33279/FLAGf88133ee1 [2022-11-02 21:11:18,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/data/9c119c1d6/efdf6adf2c504cc495031f7df9d33279 [2022-11-02 21:11:18,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:11:18,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:11:18,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:18,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:11:18,690 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:11:18,691 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:18" (1/1) ... [2022-11-02 21:11:18,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ea1260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:18, skipping insertion in model container [2022-11-02 21:11:18,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:11:18" (1/1) ... [2022-11-02 21:11:18,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:11:18,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:11:19,011 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_ac94fd06-e47d-4f0a-88e9-b7f621801944/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-11-02 21:11:19,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:19,023 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:11:19,062 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_ac94fd06-e47d-4f0a-88e9-b7f621801944/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c[3963,3976] [2022-11-02 21:11:19,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:11:19,076 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:11:19,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19 WrapperNode [2022-11-02 21:11:19,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:11:19,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:19,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:11:19,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:11:19,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,137 INFO L138 Inliner]: procedures = 24, calls = 85, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 238 [2022-11-02 21:11:19,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:11:19,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:11:19,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:11:19,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:11:19,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:11:19,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:11:19,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:11:19,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:11:19,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (1/1) ... [2022-11-02 21:11:19,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:11:19,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:19,233 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:11:19,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac94fd06-e47d-4f0a-88e9-b7f621801944/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:11:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:11:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 21:11:19,275 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 21:11:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 21:11:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 21:11:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 21:11:19,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 21:11:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-02 21:11:19,283 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-02 21:11:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:11:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2022-11-02 21:11:19,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2022-11-02 21:11:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 21:11:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 21:11:19,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 21:11:19,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 21:11:19,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:11:19,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:11:19,285 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 21:11:19,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 21:11:19,287 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 21:11:19,458 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:11:19,462 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:11:19,900 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:11:20,024 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:11:20,025 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 21:11:20,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:20 BoogieIcfgContainer [2022-11-02 21:11:20,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:11:20,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:11:20,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:11:20,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:11:20,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:11:18" (1/3) ... [2022-11-02 21:11:20,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4432b115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:20, skipping insertion in model container [2022-11-02 21:11:20,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:11:19" (2/3) ... [2022-11-02 21:11:20,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4432b115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:11:20, skipping insertion in model container [2022-11-02 21:11:20,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:11:20" (3/3) ... [2022-11-02 21:11:20,047 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2022-11-02 21:11:20,057 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 21:11:20,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:11:20,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:11:20,067 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 21:11:20,181 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2022-11-02 21:11:20,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 165 transitions, 370 flow [2022-11-02 21:11:20,330 INFO L130 PetriNetUnfolder]: 2/160 cut-off events. [2022-11-02 21:11:20,330 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 21:11:20,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 160 events. 2/160 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 66 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 120. Up to 2 conditions per place. [2022-11-02 21:11:20,333 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 165 transitions, 370 flow [2022-11-02 21:11:20,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 145 transitions, 320 flow [2022-11-02 21:11:20,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:11:20,356 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;@56ff608f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:11:20,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-02 21:11:20,415 INFO L130 PetriNetUnfolder]: 2/144 cut-off events. [2022-11-02 21:11:20,415 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-02 21:11:20,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:20,417 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] [2022-11-02 21:11:20,418 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 3 more)] === [2022-11-02 21:11:20,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:20,425 INFO L85 PathProgramCache]: Analyzing trace with hash -2076689551, now seen corresponding path program 1 times [2022-11-02 21:11:20,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:20,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555189961] [2022-11-02 21:11:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:20,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:22,839 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 21:11:22,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:22,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555189961] [2022-11-02 21:11:22,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555189961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:22,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:22,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:11:22,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346395259] [2022-11-02 21:11:22,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:22,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:11:22,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:22,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:11:22,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:11:22,896 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 165 [2022-11-02 21:11:22,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 145 transitions, 320 flow. Second operand has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:22,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:22,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 165 [2022-11-02 21:11:22,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:30,918 INFO L130 PetriNetUnfolder]: 24026/38319 cut-off events. [2022-11-02 21:11:30,919 INFO L131 PetriNetUnfolder]: For 5728/5728 co-relation queries the response was YES. [2022-11-02 21:11:31,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74568 conditions, 38319 events. 24026/38319 cut-off events. For 5728/5728 co-relation queries the response was YES. Maximal size of possible extension queue 1578. Compared 304807 event pairs, 13472 based on Foata normal form. 3/37752 useless extension candidates. Maximal degree in co-relation 59941. Up to 15956 conditions per place. [2022-11-02 21:11:31,391 INFO L137 encePairwiseOnDemand]: 147/165 looper letters, 85 selfloop transitions, 15 changer transitions 13/211 dead transitions. [2022-11-02 21:11:31,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 211 transitions, 723 flow [2022-11-02 21:11:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:11:31,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 21:11:31,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1404 transitions. [2022-11-02 21:11:31,421 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7735537190082644 [2022-11-02 21:11:31,422 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1404 transitions. [2022-11-02 21:11:31,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1404 transitions. [2022-11-02 21:11:31,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:31,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1404 transitions. [2022-11-02 21:11:31,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.63636363636364) internal successors, (1404), 11 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:31,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:31,457 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 165.0) internal successors, (1980), 12 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:31,459 INFO L175 Difference]: Start difference. First operand has 159 places, 145 transitions, 320 flow. Second operand 11 states and 1404 transitions. [2022-11-02 21:11:31,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 211 transitions, 723 flow [2022-11-02 21:11:31,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 211 transitions, 673 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-11-02 21:11:31,632 INFO L231 Difference]: Finished difference. Result has 164 places, 150 transitions, 382 flow [2022-11-02 21:11:31,634 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=382, PETRI_PLACES=164, PETRI_TRANSITIONS=150} [2022-11-02 21:11:31,638 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 5 predicate places. [2022-11-02 21:11:31,639 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 150 transitions, 382 flow [2022-11-02 21:11:31,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:31,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:31,641 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] [2022-11-02 21:11:31,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:11:31,642 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 3 more)] === [2022-11-02 21:11:31,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:31,645 INFO L85 PathProgramCache]: Analyzing trace with hash -2057670669, now seen corresponding path program 2 times [2022-11-02 21:11:31,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:31,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886147728] [2022-11-02 21:11:31,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:31,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,132 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 21:11:33,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:33,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886147728] [2022-11-02 21:11:33,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886147728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:33,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:33,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:11:33,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930151527] [2022-11-02 21:11:33,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:33,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:11:33,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:33,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:11:33,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:11:33,139 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 165 [2022-11-02 21:11:33,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 150 transitions, 382 flow. Second operand has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:33,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:33,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 165 [2022-11-02 21:11:33,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:38,739 INFO L130 PetriNetUnfolder]: 23366/36830 cut-off events. [2022-11-02 21:11:38,739 INFO L131 PetriNetUnfolder]: For 14497/14528 co-relation queries the response was YES. [2022-11-02 21:11:38,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83829 conditions, 36830 events. 23366/36830 cut-off events. For 14497/14528 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 280950 event pairs, 14203 based on Foata normal form. 1/35784 useless extension candidates. Maximal degree in co-relation 83816. Up to 20833 conditions per place. [2022-11-02 21:11:39,022 INFO L137 encePairwiseOnDemand]: 152/165 looper letters, 56 selfloop transitions, 13 changer transitions 47/214 dead transitions. [2022-11-02 21:11:39,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 214 transitions, 812 flow [2022-11-02 21:11:39,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:11:39,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 21:11:39,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1279 transitions. [2022-11-02 21:11:39,026 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7751515151515151 [2022-11-02 21:11:39,026 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1279 transitions. [2022-11-02 21:11:39,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1279 transitions. [2022-11-02 21:11:39,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:39,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1279 transitions. [2022-11-02 21:11:39,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 127.9) internal successors, (1279), 10 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:39,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:39,035 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 165.0) internal successors, (1815), 11 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:39,036 INFO L175 Difference]: Start difference. First operand has 164 places, 150 transitions, 382 flow. Second operand 10 states and 1279 transitions. [2022-11-02 21:11:39,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 214 transitions, 812 flow [2022-11-02 21:11:39,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 214 transitions, 785 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-02 21:11:39,045 INFO L231 Difference]: Finished difference. Result has 166 places, 154 transitions, 442 flow [2022-11-02 21:11:39,045 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=442, PETRI_PLACES=166, PETRI_TRANSITIONS=154} [2022-11-02 21:11:39,046 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 7 predicate places. [2022-11-02 21:11:39,046 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 154 transitions, 442 flow [2022-11-02 21:11:39,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.3) internal successors, (1213), 10 states have internal predecessors, (1213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:39,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:39,048 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] [2022-11-02 21:11:39,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:11:39,048 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 3 more)] === [2022-11-02 21:11:39,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:39,049 INFO L85 PathProgramCache]: Analyzing trace with hash -536900385, now seen corresponding path program 3 times [2022-11-02 21:11:39,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:39,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602616146] [2022-11-02 21:11:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:39,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:39,351 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 21:11:39,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602616146] [2022-11-02 21:11:39,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602616146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:39,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:39,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:11:39,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397155041] [2022-11-02 21:11:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:39,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:11:39,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:11:39,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:39,356 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-11-02 21:11:39,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 154 transitions, 442 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:39,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:39,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-11-02 21:11:39,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:43,986 INFO L130 PetriNetUnfolder]: 16213/32191 cut-off events. [2022-11-02 21:11:43,987 INFO L131 PetriNetUnfolder]: For 14164/18107 co-relation queries the response was YES. [2022-11-02 21:11:44,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66599 conditions, 32191 events. 16213/32191 cut-off events. For 14164/18107 co-relation queries the response was YES. Maximal size of possible extension queue 1940. Compared 331971 event pairs, 4674 based on Foata normal form. 470/31303 useless extension candidates. Maximal degree in co-relation 66584. Up to 6857 conditions per place. [2022-11-02 21:11:44,281 INFO L137 encePairwiseOnDemand]: 151/165 looper letters, 76 selfloop transitions, 23 changer transitions 0/214 dead transitions. [2022-11-02 21:11:44,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 214 transitions, 778 flow [2022-11-02 21:11:44,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:11:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:11:44,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2022-11-02 21:11:44,285 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8199134199134199 [2022-11-02 21:11:44,285 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2022-11-02 21:11:44,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2022-11-02 21:11:44,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:44,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2022-11-02 21:11:44,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:44,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:44,293 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:44,293 INFO L175 Difference]: Start difference. First operand has 166 places, 154 transitions, 442 flow. Second operand 7 states and 947 transitions. [2022-11-02 21:11:44,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 214 transitions, 778 flow [2022-11-02 21:11:44,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 214 transitions, 731 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-11-02 21:11:44,431 INFO L231 Difference]: Finished difference. Result has 162 places, 174 transitions, 528 flow [2022-11-02 21:11:44,431 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=528, PETRI_PLACES=162, PETRI_TRANSITIONS=174} [2022-11-02 21:11:44,434 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-11-02 21:11:44,434 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 174 transitions, 528 flow [2022-11-02 21:11:44,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:44,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:44,435 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] [2022-11-02 21:11:44,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:11:44,435 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 3 more)] === [2022-11-02 21:11:44,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:44,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1585257671, now seen corresponding path program 4 times [2022-11-02 21:11:44,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:44,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325370202] [2022-11-02 21:11:44,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:44,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:44,973 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 21:11:44,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:44,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325370202] [2022-11-02 21:11:44,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325370202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:44,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:44,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:11:44,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94902202] [2022-11-02 21:11:44,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:44,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:11:44,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:44,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:11:44,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:44,978 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-11-02 21:11:44,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 174 transitions, 528 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:44,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:44,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-11-02 21:11:44,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:49,539 INFO L130 PetriNetUnfolder]: 16381/31761 cut-off events. [2022-11-02 21:11:49,539 INFO L131 PetriNetUnfolder]: For 20230/23155 co-relation queries the response was YES. [2022-11-02 21:11:49,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81728 conditions, 31761 events. 16381/31761 cut-off events. For 20230/23155 co-relation queries the response was YES. Maximal size of possible extension queue 1873. Compared 319236 event pairs, 4371 based on Foata normal form. 1049/31343 useless extension candidates. Maximal degree in co-relation 24550. Up to 7189 conditions per place. [2022-11-02 21:11:49,807 INFO L137 encePairwiseOnDemand]: 151/165 looper letters, 74 selfloop transitions, 30 changer transitions 0/219 dead transitions. [2022-11-02 21:11:49,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 219 transitions, 889 flow [2022-11-02 21:11:49,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:11:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:11:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2022-11-02 21:11:49,815 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-02 21:11:49,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2022-11-02 21:11:49,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2022-11-02 21:11:49,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:49,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2022-11-02 21:11:49,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:49,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:49,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:49,830 INFO L175 Difference]: Start difference. First operand has 162 places, 174 transitions, 528 flow. Second operand 7 states and 945 transitions. [2022-11-02 21:11:49,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 219 transitions, 889 flow [2022-11-02 21:11:49,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 219 transitions, 885 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 21:11:49,848 INFO L231 Difference]: Finished difference. Result has 168 places, 182 transitions, 653 flow [2022-11-02 21:11:49,849 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=168, PETRI_TRANSITIONS=182} [2022-11-02 21:11:49,851 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 9 predicate places. [2022-11-02 21:11:49,852 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 182 transitions, 653 flow [2022-11-02 21:11:49,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:49,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:49,853 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] [2022-11-02 21:11:49,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:11:49,853 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 3 more)] === [2022-11-02 21:11:49,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:49,854 INFO L85 PathProgramCache]: Analyzing trace with hash 139968319, now seen corresponding path program 5 times [2022-11-02 21:11:49,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:49,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839678219] [2022-11-02 21:11:49,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:50,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:50,444 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 21:11:50,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:50,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839678219] [2022-11-02 21:11:50,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839678219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:50,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:50,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:11:50,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754835347] [2022-11-02 21:11:50,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:50,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:11:50,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:50,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:11:50,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:50,450 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-11-02 21:11:50,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 182 transitions, 653 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:50,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:50,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-11-02 21:11:50,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:11:55,382 INFO L130 PetriNetUnfolder]: 15974/30769 cut-off events. [2022-11-02 21:11:55,383 INFO L131 PetriNetUnfolder]: For 38881/42052 co-relation queries the response was YES. [2022-11-02 21:11:55,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93700 conditions, 30769 events. 15974/30769 cut-off events. For 38881/42052 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 305683 event pairs, 4151 based on Foata normal form. 936/30344 useless extension candidates. Maximal degree in co-relation 28766. Up to 6978 conditions per place. [2022-11-02 21:11:55,619 INFO L137 encePairwiseOnDemand]: 151/165 looper letters, 75 selfloop transitions, 42 changer transitions 0/232 dead transitions. [2022-11-02 21:11:55,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 232 transitions, 1112 flow [2022-11-02 21:11:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:11:55,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:11:55,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2022-11-02 21:11:55,623 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-11-02 21:11:55,623 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2022-11-02 21:11:55,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2022-11-02 21:11:55,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:11:55,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2022-11-02 21:11:55,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:55,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:55,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:55,631 INFO L175 Difference]: Start difference. First operand has 168 places, 182 transitions, 653 flow. Second operand 7 states and 946 transitions. [2022-11-02 21:11:55,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 232 transitions, 1112 flow [2022-11-02 21:11:55,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 232 transitions, 1063 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:11:55,656 INFO L231 Difference]: Finished difference. Result has 172 places, 195 transitions, 832 flow [2022-11-02 21:11:55,657 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=832, PETRI_PLACES=172, PETRI_TRANSITIONS=195} [2022-11-02 21:11:55,657 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 13 predicate places. [2022-11-02 21:11:55,658 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 195 transitions, 832 flow [2022-11-02 21:11:55,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:55,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:11:55,659 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:11:55,659 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 3 more)] === [2022-11-02 21:11:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1336579077, now seen corresponding path program 6 times [2022-11-02 21:11:55,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:55,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241329033] [2022-11-02 21:11:55,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:55,952 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 21:11:55,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:55,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241329033] [2022-11-02 21:11:55,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241329033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:55,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:55,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:11:55,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2647798] [2022-11-02 21:11:55,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:55,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:11:55,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:55,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:11:55,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:11:55,956 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 165 [2022-11-02 21:11:55,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 195 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:55,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:11:55,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 165 [2022-11-02 21:11:55,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:01,070 INFO L130 PetriNetUnfolder]: 15460/29639 cut-off events. [2022-11-02 21:12:01,070 INFO L131 PetriNetUnfolder]: For 56919/60118 co-relation queries the response was YES. [2022-11-02 21:12:01,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98328 conditions, 29639 events. 15460/29639 cut-off events. For 56919/60118 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 294619 event pairs, 3700 based on Foata normal form. 805/29039 useless extension candidates. Maximal degree in co-relation 63702. Up to 6694 conditions per place. [2022-11-02 21:12:01,344 INFO L137 encePairwiseOnDemand]: 151/165 looper letters, 75 selfloop transitions, 61 changer transitions 1/252 dead transitions. [2022-11-02 21:12:01,344 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 252 transitions, 1436 flow [2022-11-02 21:12:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:12:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 21:12:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 947 transitions. [2022-11-02 21:12:01,348 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8199134199134199 [2022-11-02 21:12:01,348 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 947 transitions. [2022-11-02 21:12:01,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 947 transitions. [2022-11-02 21:12:01,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:01,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 947 transitions. [2022-11-02 21:12:01,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.28571428571428) internal successors, (947), 7 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:01,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:01,356 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 165.0) internal successors, (1320), 8 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:01,356 INFO L175 Difference]: Start difference. First operand has 172 places, 195 transitions, 832 flow. Second operand 7 states and 947 transitions. [2022-11-02 21:12:01,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 252 transitions, 1436 flow [2022-11-02 21:12:01,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 252 transitions, 1368 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 21:12:01,385 INFO L231 Difference]: Finished difference. Result has 176 places, 215 transitions, 1145 flow [2022-11-02 21:12:01,386 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1145, PETRI_PLACES=176, PETRI_TRANSITIONS=215} [2022-11-02 21:12:01,387 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2022-11-02 21:12:01,387 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 215 transitions, 1145 flow [2022-11-02 21:12:01,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:01,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:01,388 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] [2022-11-02 21:12:01,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:12:01,388 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 3 more)] === [2022-11-02 21:12:01,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:01,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1503101175, now seen corresponding path program 7 times [2022-11-02 21:12:01,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:01,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734049629] [2022-11-02 21:12:01,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:01,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:02,158 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 21:12:02,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:02,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734049629] [2022-11-02 21:12:02,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734049629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:02,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:02,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:12:02,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836104637] [2022-11-02 21:12:02,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:02,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:12:02,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:02,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:12:02,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:12:02,169 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-11-02 21:12:02,171 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 215 transitions, 1145 flow. Second operand has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:02,171 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:02,172 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-11-02 21:12:02,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:09,139 INFO L130 PetriNetUnfolder]: 25121/43033 cut-off events. [2022-11-02 21:12:09,140 INFO L131 PetriNetUnfolder]: For 110266/110266 co-relation queries the response was YES. [2022-11-02 21:12:09,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157405 conditions, 43033 events. 25121/43033 cut-off events. For 110266/110266 co-relation queries the response was YES. Maximal size of possible extension queue 1712. Compared 381884 event pairs, 4308 based on Foata normal form. 942/43381 useless extension candidates. Maximal degree in co-relation 118091. Up to 13481 conditions per place. [2022-11-02 21:12:09,490 INFO L137 encePairwiseOnDemand]: 151/165 looper letters, 160 selfloop transitions, 134 changer transitions 6/392 dead transitions. [2022-11-02 21:12:09,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 392 transitions, 2864 flow [2022-11-02 21:12:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:12:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 21:12:09,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1164 transitions. [2022-11-02 21:12:09,495 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7838383838383839 [2022-11-02 21:12:09,495 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1164 transitions. [2022-11-02 21:12:09,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1164 transitions. [2022-11-02 21:12:09,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 21:12:09,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1164 transitions. [2022-11-02 21:12:09,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 129.33333333333334) internal successors, (1164), 9 states have internal predecessors, (1164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:09,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:09,504 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 165.0) internal successors, (1650), 10 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:09,504 INFO L175 Difference]: Start difference. First operand has 176 places, 215 transitions, 1145 flow. Second operand 9 states and 1164 transitions. [2022-11-02 21:12:09,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 392 transitions, 2864 flow [2022-11-02 21:12:09,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 392 transitions, 2726 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 21:12:09,545 INFO L231 Difference]: Finished difference. Result has 181 places, 284 transitions, 2147 flow [2022-11-02 21:12:09,546 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2147, PETRI_PLACES=181, PETRI_TRANSITIONS=284} [2022-11-02 21:12:09,547 INFO L287 CegarLoopForPetriNet]: 159 programPoint places, 22 predicate places. [2022-11-02 21:12:09,547 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 284 transitions, 2147 flow [2022-11-02 21:12:09,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:09,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 21:12:09,548 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] [2022-11-02 21:12:09,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:12:09,548 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 3 more)] === [2022-11-02 21:12:09,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash -101447699, now seen corresponding path program 8 times [2022-11-02 21:12:09,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:09,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597392021] [2022-11-02 21:12:09,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:09,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:10,080 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 21:12:10,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:10,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597392021] [2022-11-02 21:12:10,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597392021] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:10,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:10,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 21:12:10,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619800015] [2022-11-02 21:12:10,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:10,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:12:10,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:10,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:12:10,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:12:10,083 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 165 [2022-11-02 21:12:10,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 284 transitions, 2147 flow. Second operand has 9 states, 9 states have (on average 116.44444444444444) internal successors, (1048), 9 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:10,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 21:12:10,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 165 [2022-11-02 21:12:10,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 21:12:18,194 INFO L130 PetriNetUnfolder]: 24744/42359 cut-off events. [2022-11-02 21:12:18,195 INFO L131 PetriNetUnfolder]: For 161515/161515 co-relation queries the response was YES.