./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.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_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/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_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/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_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:58:24,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:58:24,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:58:24,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:58:24,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:58:24,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:58:24,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:58:24,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:58:24,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:58:24,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:58:24,424 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:58:24,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:58:24,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:58:24,433 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:58:24,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:58:24,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:58:24,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:58:24,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:58:24,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:58:24,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:58:24,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:58:24,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:58:24,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:58:24,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:58:24,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:58:24,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:58:24,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:58:24,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:58:24,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:58:24,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:58:24,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:58:24,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:58:24,481 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:58:24,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:58:24,484 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:58:24,484 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:58:24,485 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:58:24,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:58:24,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:58:24,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:58:24,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:58:24,489 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:58:24,537 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:58:24,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:58:24,538 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:58:24,538 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:58:24,539 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:58:24,539 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:58:24,540 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:58:24,541 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:58:24,541 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:58:24,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:58:24,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:58:24,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:58:24,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:58:24,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:58:24,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:58:24,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:58:24,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:58:24,544 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:58:24,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:58:24,545 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:58:24,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:58:24,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:58:24,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:58:24,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:58:24,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:24,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:58:24,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:58:24,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:58:24,547 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:58:24,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:58:24,548 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:58:24,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:58:24,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:58:24,549 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_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2022-11-02 20:58:24,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:58:24,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:58:24,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:58:24,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:58:24,877 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:58:24,879 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-02 20:58:24,953 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/data/b16a6ab10/22ecab6d8fa04af2ab356dd9c67520bb/FLAGc73ce04b2 [2022-11-02 20:58:25,525 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:58:25,527 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2022-11-02 20:58:25,538 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/data/b16a6ab10/22ecab6d8fa04af2ab356dd9c67520bb/FLAGc73ce04b2 [2022-11-02 20:58:25,843 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/data/b16a6ab10/22ecab6d8fa04af2ab356dd9c67520bb [2022-11-02 20:58:25,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:58:25,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:58:25,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:25,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:58:25,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:58:25,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:25" (1/1) ... [2022-11-02 20:58:25,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25be734d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:25, skipping insertion in model container [2022-11-02 20:58:25,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:58:25" (1/1) ... [2022-11-02 20:58:25,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:58:25,888 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:58:26,140 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_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-02 20:58:26,150 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:26,162 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:58:26,222 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_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2022-11-02 20:58:26,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:58:26,251 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:58:26,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26 WrapperNode [2022-11-02 20:58:26,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:58:26,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:26,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:58:26,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:58:26,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,318 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 279 [2022-11-02 20:58:26,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:58:26,319 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:58:26,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:58:26,320 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:58:26,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,347 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,370 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:58:26,375 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:58:26,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:58:26,375 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:58:26,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (1/1) ... [2022-11-02 20:58:26,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:58:26,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:26,415 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:58:26,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec1bb9d5-d0c6-4462-92aa-4d599d0c5c37/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:58:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:58:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:58:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:58:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:58:26,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:58:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:58:26,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:58:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:58:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:58:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:58:26,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:58:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:58:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:58:26,460 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:58:26,565 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:58:26,569 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:58:27,093 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:58:27,316 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:58:27,316 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-02 20:58:27,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:27 BoogieIcfgContainer [2022-11-02 20:58:27,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:58:27,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:58:27,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:58:27,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:58:27,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:58:25" (1/3) ... [2022-11-02 20:58:27,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5698135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:58:27, skipping insertion in model container [2022-11-02 20:58:27,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:58:26" (2/3) ... [2022-11-02 20:58:27,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5698135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:58:27, skipping insertion in model container [2022-11-02 20:58:27,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:58:27" (3/3) ... [2022-11-02 20:58:27,333 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2022-11-02 20:58:27,342 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:58:27,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:58:27,356 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:58:27,356 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:58:27,462 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:58:27,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2022-11-02 20:58:27,649 INFO L130 PetriNetUnfolder]: 2/149 cut-off events. [2022-11-02 20:58:27,649 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:58:27,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2022-11-02 20:58:27,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 152 transitions, 328 flow [2022-11-02 20:58:27,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 138 transitions, 294 flow [2022-11-02 20:58:27,666 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:58:27,672 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;@66e11411, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:58:27,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:58:27,710 INFO L130 PetriNetUnfolder]: 2/137 cut-off events. [2022-11-02 20:58:27,710 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:58:27,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:27,711 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] [2022-11-02 20:58:27,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:27,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:27,722 INFO L85 PathProgramCache]: Analyzing trace with hash 1657276246, now seen corresponding path program 1 times [2022-11-02 20:58:27,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:27,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60360329] [2022-11-02 20:58:27,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:27,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:29,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:29,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60360329] [2022-11-02 20:58:29,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60360329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:29,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:29,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:58:29,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572468839] [2022-11-02 20:58:29,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:29,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:58:29,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:29,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:58:29,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:58:29,270 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-11-02 20:58:29,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 138 transitions, 294 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:29,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:29,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-11-02 20:58:29,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:31,384 INFO L130 PetriNetUnfolder]: 2149/5092 cut-off events. [2022-11-02 20:58:31,385 INFO L131 PetriNetUnfolder]: For 606/606 co-relation queries the response was YES. [2022-11-02 20:58:31,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9031 conditions, 5092 events. 2149/5092 cut-off events. For 606/606 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 40326 event pairs, 1260 based on Foata normal form. 7/5040 useless extension candidates. Maximal degree in co-relation 8682. Up to 1966 conditions per place. [2022-11-02 20:58:31,431 INFO L137 encePairwiseOnDemand]: 132/152 looper letters, 152 selfloop transitions, 21 changer transitions 23/281 dead transitions. [2022-11-02 20:58:31,431 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 281 transitions, 1026 flow [2022-11-02 20:58:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:58:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:58:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2262 transitions. [2022-11-02 20:58:31,454 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7086466165413534 [2022-11-02 20:58:31,454 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2262 transitions. [2022-11-02 20:58:31,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2262 transitions. [2022-11-02 20:58:31,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:31,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2262 transitions. [2022-11-02 20:58:31,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 107.71428571428571) internal successors, (2262), 21 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:31,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:31,487 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:31,490 INFO L175 Difference]: Start difference. First operand has 146 places, 138 transitions, 294 flow. Second operand 21 states and 2262 transitions. [2022-11-02 20:58:31,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 281 transitions, 1026 flow [2022-11-02 20:58:31,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 281 transitions, 978 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:58:31,513 INFO L231 Difference]: Finished difference. Result has 166 places, 150 transitions, 384 flow [2022-11-02 20:58:31,516 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=384, PETRI_PLACES=166, PETRI_TRANSITIONS=150} [2022-11-02 20:58:31,520 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 20 predicate places. [2022-11-02 20:58:31,520 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 150 transitions, 384 flow [2022-11-02 20:58:31,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:31,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:31,522 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] [2022-11-02 20:58:31,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:58:31,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:31,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:31,524 INFO L85 PathProgramCache]: Analyzing trace with hash -270808544, now seen corresponding path program 2 times [2022-11-02 20:58:31,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:31,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446834312] [2022-11-02 20:58:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:31,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:31,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:31,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446834312] [2022-11-02 20:58:31,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446834312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:31,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:31,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:58:31,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104204535] [2022-11-02 20:58:31,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:31,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:58:31,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:31,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:58:31,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:31,892 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2022-11-02 20:58:31,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 150 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:31,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:31,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2022-11-02 20:58:31,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:32,453 INFO L130 PetriNetUnfolder]: 1293/3256 cut-off events. [2022-11-02 20:58:32,454 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-11-02 20:58:32,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5944 conditions, 3256 events. 1293/3256 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 24656 event pairs, 840 based on Foata normal form. 68/3274 useless extension candidates. Maximal degree in co-relation 5915. Up to 1387 conditions per place. [2022-11-02 20:58:32,480 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 44 selfloop transitions, 2 changer transitions 0/164 dead transitions. [2022-11-02 20:58:32,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 164 transitions, 506 flow [2022-11-02 20:58:32,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:58:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:58:32,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-11-02 20:58:32,482 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-02 20:58:32,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-11-02 20:58:32,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-11-02 20:58:32,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:32,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-11-02 20:58:32,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:32,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:32,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:32,486 INFO L175 Difference]: Start difference. First operand has 166 places, 150 transitions, 384 flow. Second operand 3 states and 399 transitions. [2022-11-02 20:58:32,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 164 transitions, 506 flow [2022-11-02 20:58:32,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 164 transitions, 496 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-11-02 20:58:32,493 INFO L231 Difference]: Finished difference. Result has 152 places, 150 transitions, 384 flow [2022-11-02 20:58:32,493 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=152, PETRI_TRANSITIONS=150} [2022-11-02 20:58:32,494 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 6 predicate places. [2022-11-02 20:58:32,494 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 150 transitions, 384 flow [2022-11-02 20:58:32,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:32,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:32,495 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] [2022-11-02 20:58:32,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:58:32,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:32,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:32,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1148323842, now seen corresponding path program 3 times [2022-11-02 20:58:32,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:32,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561902414] [2022-11-02 20:58:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:32,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:33,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:33,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:33,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561902414] [2022-11-02 20:58:33,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561902414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:33,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:33,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:58:33,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715250658] [2022-11-02 20:58:33,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:33,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:58:33,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:33,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:58:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:58:33,172 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-11-02 20:58:33,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 150 transitions, 384 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:33,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:33,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-11-02 20:58:33,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:34,936 INFO L130 PetriNetUnfolder]: 2236/5811 cut-off events. [2022-11-02 20:58:34,937 INFO L131 PetriNetUnfolder]: For 845/845 co-relation queries the response was YES. [2022-11-02 20:58:35,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11273 conditions, 5811 events. 2236/5811 cut-off events. For 845/845 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 49791 event pairs, 1201 based on Foata normal form. 1/5766 useless extension candidates. Maximal degree in co-relation 8233. Up to 1905 conditions per place. [2022-11-02 20:58:35,047 INFO L137 encePairwiseOnDemand]: 136/152 looper letters, 168 selfloop transitions, 32 changer transitions 18/303 dead transitions. [2022-11-02 20:58:35,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 303 transitions, 1234 flow [2022-11-02 20:58:35,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:58:35,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:58:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1668 transitions. [2022-11-02 20:58:35,053 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7315789473684211 [2022-11-02 20:58:35,055 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1668 transitions. [2022-11-02 20:58:35,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1668 transitions. [2022-11-02 20:58:35,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:35,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1668 transitions. [2022-11-02 20:58:35,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.2) internal successors, (1668), 15 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:35,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:35,069 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:35,069 INFO L175 Difference]: Start difference. First operand has 152 places, 150 transitions, 384 flow. Second operand 15 states and 1668 transitions. [2022-11-02 20:58:35,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 303 transitions, 1234 flow [2022-11-02 20:58:35,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 303 transitions, 1230 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:58:35,083 INFO L231 Difference]: Finished difference. Result has 172 places, 171 transitions, 607 flow [2022-11-02 20:58:35,084 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=607, PETRI_PLACES=172, PETRI_TRANSITIONS=171} [2022-11-02 20:58:35,086 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 26 predicate places. [2022-11-02 20:58:35,087 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 171 transitions, 607 flow [2022-11-02 20:58:35,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:35,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:35,088 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] [2022-11-02 20:58:35,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:58:35,089 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:35,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash 127245472, now seen corresponding path program 4 times [2022-11-02 20:58:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:35,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895263668] [2022-11-02 20:58:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:35,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:36,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:36,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895263668] [2022-11-02 20:58:36,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895263668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:36,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:36,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:58:36,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868197334] [2022-11-02 20:58:36,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:36,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:58:36,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:36,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:58:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:58:36,010 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-02 20:58:36,012 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 171 transitions, 607 flow. Second operand has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:36,012 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:36,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-02 20:58:36,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:38,666 INFO L130 PetriNetUnfolder]: 4602/10643 cut-off events. [2022-11-02 20:58:38,667 INFO L131 PetriNetUnfolder]: For 2038/2076 co-relation queries the response was YES. [2022-11-02 20:58:38,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21634 conditions, 10643 events. 4602/10643 cut-off events. For 2038/2076 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 98478 event pairs, 1115 based on Foata normal form. 151/10489 useless extension candidates. Maximal degree in co-relation 21548. Up to 3406 conditions per place. [2022-11-02 20:58:38,778 INFO L137 encePairwiseOnDemand]: 135/152 looper letters, 157 selfloop transitions, 42 changer transitions 8/334 dead transitions. [2022-11-02 20:58:38,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 334 transitions, 1381 flow [2022-11-02 20:58:38,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:58:38,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:58:38,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1758 transitions. [2022-11-02 20:58:38,783 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7710526315789473 [2022-11-02 20:58:38,783 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1758 transitions. [2022-11-02 20:58:38,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1758 transitions. [2022-11-02 20:58:38,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:38,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1758 transitions. [2022-11-02 20:58:38,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 117.2) internal successors, (1758), 15 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:38,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:38,799 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:38,799 INFO L175 Difference]: Start difference. First operand has 172 places, 171 transitions, 607 flow. Second operand 15 states and 1758 transitions. [2022-11-02 20:58:38,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 334 transitions, 1381 flow [2022-11-02 20:58:38,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 334 transitions, 1367 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-02 20:58:38,836 INFO L231 Difference]: Finished difference. Result has 188 places, 210 transitions, 888 flow [2022-11-02 20:58:38,837 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=888, PETRI_PLACES=188, PETRI_TRANSITIONS=210} [2022-11-02 20:58:38,844 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 42 predicate places. [2022-11-02 20:58:38,845 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 210 transitions, 888 flow [2022-11-02 20:58:38,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 107.0) internal successors, (1177), 11 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:38,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:38,846 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] [2022-11-02 20:58:38,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:58:38,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:38,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:38,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1232286558, now seen corresponding path program 5 times [2022-11-02 20:58:38,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:38,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975592602] [2022-11-02 20:58:38,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:38,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:38,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:39,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:39,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975592602] [2022-11-02 20:58:39,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975592602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:39,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:39,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:58:39,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319742894] [2022-11-02 20:58:39,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:39,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:58:39,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:58:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:58:39,444 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 152 [2022-11-02 20:58:39,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 210 transitions, 888 flow. Second operand has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:39,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:39,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 152 [2022-11-02 20:58:39,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:42,731 INFO L130 PetriNetUnfolder]: 6121/13696 cut-off events. [2022-11-02 20:58:42,731 INFO L131 PetriNetUnfolder]: For 18957/18969 co-relation queries the response was YES. [2022-11-02 20:58:42,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40456 conditions, 13696 events. 6121/13696 cut-off events. For 18957/18969 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 127899 event pairs, 2601 based on Foata normal form. 8/13577 useless extension candidates. Maximal degree in co-relation 39541. Up to 4690 conditions per place. [2022-11-02 20:58:42,901 INFO L137 encePairwiseOnDemand]: 136/152 looper letters, 241 selfloop transitions, 37 changer transitions 11/389 dead transitions. [2022-11-02 20:58:42,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 389 transitions, 2344 flow [2022-11-02 20:58:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:58:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-02 20:58:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1666 transitions. [2022-11-02 20:58:42,906 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.730701754385965 [2022-11-02 20:58:42,906 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1666 transitions. [2022-11-02 20:58:42,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1666 transitions. [2022-11-02 20:58:42,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:42,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1666 transitions. [2022-11-02 20:58:42,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 111.06666666666666) internal successors, (1666), 15 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:42,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:42,919 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:42,919 INFO L175 Difference]: Start difference. First operand has 188 places, 210 transitions, 888 flow. Second operand 15 states and 1666 transitions. [2022-11-02 20:58:42,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 389 transitions, 2344 flow [2022-11-02 20:58:43,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 389 transitions, 2340 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:58:43,133 INFO L231 Difference]: Finished difference. Result has 206 places, 217 transitions, 1044 flow [2022-11-02 20:58:43,134 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=884, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1044, PETRI_PLACES=206, PETRI_TRANSITIONS=217} [2022-11-02 20:58:43,134 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 60 predicate places. [2022-11-02 20:58:43,135 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 217 transitions, 1044 flow [2022-11-02 20:58:43,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.76923076923077) internal successors, (1323), 13 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:43,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:43,136 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] [2022-11-02 20:58:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:58:43,137 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:43,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -601711664, now seen corresponding path program 6 times [2022-11-02 20:58:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:43,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379412869] [2022-11-02 20:58:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:43,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:43,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:43,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:43,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379412869] [2022-11-02 20:58:43,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379412869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:43,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:43,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:58:43,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459115163] [2022-11-02 20:58:43,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:43,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:58:43,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:43,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:58:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:58:43,390 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 152 [2022-11-02 20:58:43,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 217 transitions, 1044 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:43,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:43,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 152 [2022-11-02 20:58:43,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:45,080 INFO L130 PetriNetUnfolder]: 3503/9234 cut-off events. [2022-11-02 20:58:45,080 INFO L131 PetriNetUnfolder]: For 10799/10861 co-relation queries the response was YES. [2022-11-02 20:58:45,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26076 conditions, 9234 events. 3503/9234 cut-off events. For 10799/10861 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 88123 event pairs, 1929 based on Foata normal form. 240/9256 useless extension candidates. Maximal degree in co-relation 25980. Up to 3823 conditions per place. [2022-11-02 20:58:45,169 INFO L137 encePairwiseOnDemand]: 148/152 looper letters, 82 selfloop transitions, 2 changer transitions 0/242 dead transitions. [2022-11-02 20:58:45,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 242 transitions, 1343 flow [2022-11-02 20:58:45,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:58:45,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-02 20:58:45,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2022-11-02 20:58:45,172 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.875 [2022-11-02 20:58:45,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2022-11-02 20:58:45,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2022-11-02 20:58:45,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:45,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2022-11-02 20:58:45,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:45,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:45,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:45,175 INFO L175 Difference]: Start difference. First operand has 206 places, 217 transitions, 1044 flow. Second operand 3 states and 399 transitions. [2022-11-02 20:58:45,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 242 transitions, 1343 flow [2022-11-02 20:58:45,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 242 transitions, 1286 flow, removed 16 selfloop flow, removed 7 redundant places. [2022-11-02 20:58:45,306 INFO L231 Difference]: Finished difference. Result has 200 places, 214 transitions, 980 flow [2022-11-02 20:58:45,306 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=970, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=980, PETRI_PLACES=200, PETRI_TRANSITIONS=214} [2022-11-02 20:58:45,307 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 54 predicate places. [2022-11-02 20:58:45,307 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 214 transitions, 980 flow [2022-11-02 20:58:45,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:45,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:45,308 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] [2022-11-02 20:58:45,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:58:45,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1614709732, now seen corresponding path program 7 times [2022-11-02 20:58:45,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:45,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542077469] [2022-11-02 20:58:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:45,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:46,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:46,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:46,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542077469] [2022-11-02 20:58:46,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542077469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:46,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:46,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:58:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948315833] [2022-11-02 20:58:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:46,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:58:46,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:46,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:58:46,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:46,295 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-02 20:58:46,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 214 transitions, 980 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:46,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:46,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-02 20:58:46,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:51,113 INFO L130 PetriNetUnfolder]: 9723/23256 cut-off events. [2022-11-02 20:58:51,113 INFO L131 PetriNetUnfolder]: For 28842/29272 co-relation queries the response was YES. [2022-11-02 20:58:51,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67276 conditions, 23256 events. 9723/23256 cut-off events. For 28842/29272 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 246256 event pairs, 1468 based on Foata normal form. 442/23232 useless extension candidates. Maximal degree in co-relation 66310. Up to 2437 conditions per place. [2022-11-02 20:58:51,465 INFO L137 encePairwiseOnDemand]: 129/152 looper letters, 322 selfloop transitions, 225 changer transitions 14/695 dead transitions. [2022-11-02 20:58:51,466 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 695 transitions, 4463 flow [2022-11-02 20:58:51,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-02 20:58:51,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-02 20:58:51,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3496 transitions. [2022-11-02 20:58:51,473 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-11-02 20:58:51,474 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3496 transitions. [2022-11-02 20:58:51,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3496 transitions. [2022-11-02 20:58:51,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:51,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3496 transitions. [2022-11-02 20:58:51,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 116.53333333333333) internal successors, (3496), 30 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:51,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:51,493 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 152.0) internal successors, (4712), 31 states have internal predecessors, (4712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:51,494 INFO L175 Difference]: Start difference. First operand has 200 places, 214 transitions, 980 flow. Second operand 30 states and 3496 transitions. [2022-11-02 20:58:51,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 695 transitions, 4463 flow [2022-11-02 20:58:51,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 695 transitions, 4459 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-02 20:58:51,826 INFO L231 Difference]: Finished difference. Result has 246 places, 434 transitions, 3294 flow [2022-11-02 20:58:51,827 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=976, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3294, PETRI_PLACES=246, PETRI_TRANSITIONS=434} [2022-11-02 20:58:51,828 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 100 predicate places. [2022-11-02 20:58:51,829 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 434 transitions, 3294 flow [2022-11-02 20:58:51,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:51,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:51,830 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] [2022-11-02 20:58:51,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:58:51,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:51,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:51,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1781196860, now seen corresponding path program 8 times [2022-11-02 20:58:51,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:51,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309728993] [2022-11-02 20:58:51,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:51,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:51,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:58:52,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309728993] [2022-11-02 20:58:52,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309728993] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:58:52,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:58:52,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:58:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261063462] [2022-11-02 20:58:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:58:52,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:58:52,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:58:52,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:58:52,794 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-02 20:58:52,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 434 transitions, 3294 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:52,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:58:52,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-02 20:58:52,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:58:58,611 INFO L130 PetriNetUnfolder]: 9893/23784 cut-off events. [2022-11-02 20:58:58,612 INFO L131 PetriNetUnfolder]: For 84820/86385 co-relation queries the response was YES. [2022-11-02 20:58:58,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89701 conditions, 23784 events. 9893/23784 cut-off events. For 84820/86385 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 253855 event pairs, 5473 based on Foata normal form. 123/23342 useless extension candidates. Maximal degree in co-relation 88651. Up to 16417 conditions per place. [2022-11-02 20:58:58,914 INFO L137 encePairwiseOnDemand]: 140/152 looper letters, 319 selfloop transitions, 18 changer transitions 12/483 dead transitions. [2022-11-02 20:58:58,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 483 transitions, 4376 flow [2022-11-02 20:58:58,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:58:58,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:58:58,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1016 transitions. [2022-11-02 20:58:58,924 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7426900584795322 [2022-11-02 20:58:58,924 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1016 transitions. [2022-11-02 20:58:58,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1016 transitions. [2022-11-02 20:58:58,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:58:58,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1016 transitions. [2022-11-02 20:58:58,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 112.88888888888889) internal successors, (1016), 9 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:58,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:58,932 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:58,932 INFO L175 Difference]: Start difference. First operand has 246 places, 434 transitions, 3294 flow. Second operand 9 states and 1016 transitions. [2022-11-02 20:58:58,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 483 transitions, 4376 flow [2022-11-02 20:58:59,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 483 transitions, 4093 flow, removed 138 selfloop flow, removed 4 redundant places. [2022-11-02 20:58:59,839 INFO L231 Difference]: Finished difference. Result has 254 places, 449 transitions, 3271 flow [2022-11-02 20:58:59,840 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3051, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3271, PETRI_PLACES=254, PETRI_TRANSITIONS=449} [2022-11-02 20:58:59,841 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 108 predicate places. [2022-11-02 20:58:59,841 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 449 transitions, 3271 flow [2022-11-02 20:58:59,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:58:59,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:58:59,843 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] [2022-11-02 20:58:59,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:58:59,843 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:58:59,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:59,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1306603792, now seen corresponding path program 9 times [2022-11-02 20:58:59,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:59,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081726442] [2022-11-02 20:58:59,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:59,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:00,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:00,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:00,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081726442] [2022-11-02 20:59:00,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081726442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:00,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:00,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:59:00,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509781446] [2022-11-02 20:59:00,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:00,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:59:00,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:00,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:59:00,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:00,749 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-02 20:59:00,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 449 transitions, 3271 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:00,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:00,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-02 20:59:00,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:07,104 INFO L130 PetriNetUnfolder]: 10349/24638 cut-off events. [2022-11-02 20:59:07,104 INFO L131 PetriNetUnfolder]: For 85432/87004 co-relation queries the response was YES. [2022-11-02 20:59:07,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91783 conditions, 24638 events. 10349/24638 cut-off events. For 85432/87004 co-relation queries the response was YES. Maximal size of possible extension queue 997. Compared 263504 event pairs, 4992 based on Foata normal form. 237/24324 useless extension candidates. Maximal degree in co-relation 90691. Up to 15942 conditions per place. [2022-11-02 20:59:07,375 INFO L137 encePairwiseOnDemand]: 136/152 looper letters, 383 selfloop transitions, 79 changer transitions 29/625 dead transitions. [2022-11-02 20:59:07,375 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 625 transitions, 5686 flow [2022-11-02 20:59:07,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:59:07,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-02 20:59:07,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1618 transitions. [2022-11-02 20:59:07,379 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7603383458646616 [2022-11-02 20:59:07,379 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1618 transitions. [2022-11-02 20:59:07,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1618 transitions. [2022-11-02 20:59:07,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:07,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1618 transitions. [2022-11-02 20:59:07,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 115.57142857142857) internal successors, (1618), 14 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,390 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:07,390 INFO L175 Difference]: Start difference. First operand has 254 places, 449 transitions, 3271 flow. Second operand 14 states and 1618 transitions. [2022-11-02 20:59:07,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 625 transitions, 5686 flow [2022-11-02 20:59:08,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 625 transitions, 5654 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-11-02 20:59:08,175 INFO L231 Difference]: Finished difference. Result has 274 places, 507 transitions, 4189 flow [2022-11-02 20:59:08,175 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4189, PETRI_PLACES=274, PETRI_TRANSITIONS=507} [2022-11-02 20:59:08,176 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 128 predicate places. [2022-11-02 20:59:08,176 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 507 transitions, 4189 flow [2022-11-02 20:59:08,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:08,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:08,177 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] [2022-11-02 20:59:08,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:59:08,178 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:59:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash 439074588, now seen corresponding path program 10 times [2022-11-02 20:59:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:08,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291210276] [2022-11-02 20:59:08,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:08,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:09,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:09,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:09,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291210276] [2022-11-02 20:59:09,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291210276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:09,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:09,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-02 20:59:09,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209053725] [2022-11-02 20:59:09,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:09,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 20:59:09,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:09,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 20:59:09,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:59:09,022 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-02 20:59:09,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 507 transitions, 4189 flow. Second operand has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:09,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:09,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-02 20:59:09,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:59:18,761 INFO L130 PetriNetUnfolder]: 14623/35296 cut-off events. [2022-11-02 20:59:18,761 INFO L131 PetriNetUnfolder]: For 138202/140914 co-relation queries the response was YES. [2022-11-02 20:59:19,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135407 conditions, 35296 events. 14623/35296 cut-off events. For 138202/140914 co-relation queries the response was YES. Maximal size of possible extension queue 1561. Compared 405593 event pairs, 6427 based on Foata normal form. 580/35091 useless extension candidates. Maximal degree in co-relation 134166. Up to 15261 conditions per place. [2022-11-02 20:59:19,277 INFO L137 encePairwiseOnDemand]: 135/152 looper letters, 474 selfloop transitions, 193 changer transitions 86/887 dead transitions. [2022-11-02 20:59:19,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 887 transitions, 9108 flow [2022-11-02 20:59:19,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:59:19,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:59:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1990 transitions. [2022-11-02 20:59:19,282 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7701238390092879 [2022-11-02 20:59:19,282 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1990 transitions. [2022-11-02 20:59:19,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1990 transitions. [2022-11-02 20:59:19,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:59:19,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1990 transitions. [2022-11-02 20:59:19,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 117.05882352941177) internal successors, (1990), 17 states have internal predecessors, (1990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:19,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 152.0) internal successors, (2736), 18 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:19,296 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 152.0) internal successors, (2736), 18 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:19,297 INFO L175 Difference]: Start difference. First operand has 274 places, 507 transitions, 4189 flow. Second operand 17 states and 1990 transitions. [2022-11-02 20:59:19,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 887 transitions, 9108 flow [2022-11-02 20:59:21,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 887 transitions, 8978 flow, removed 63 selfloop flow, removed 3 redundant places. [2022-11-02 20:59:21,152 INFO L231 Difference]: Finished difference. Result has 298 places, 618 transitions, 6212 flow [2022-11-02 20:59:21,152 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4085, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=6212, PETRI_PLACES=298, PETRI_TRANSITIONS=618} [2022-11-02 20:59:21,153 INFO L287 CegarLoopForPetriNet]: 146 programPoint places, 152 predicate places. [2022-11-02 20:59:21,153 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 618 transitions, 6212 flow [2022-11-02 20:59:21,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 106.66666666666667) internal successors, (1280), 12 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:21,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:59:21,155 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] [2022-11-02 20:59:21,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:59:21,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:59:21,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:21,156 INFO L85 PathProgramCache]: Analyzing trace with hash 183428650, now seen corresponding path program 11 times [2022-11-02 20:59:21,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:21,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037574295] [2022-11-02 20:59:21,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:21,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:22,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:59:22,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:22,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037574295] [2022-11-02 20:59:22,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037574295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:22,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:59:22,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:59:22,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208122127] [2022-11-02 20:59:22,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:22,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:59:22,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:22,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:59:22,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:22,159 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 152 [2022-11-02 20:59:22,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 618 transitions, 6212 flow. Second operand has 10 states, 10 states have (on average 107.4) internal successors, (1074), 10 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:59:22,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:59:22,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 152 [2022-11-02 20:59:22,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand