./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a --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 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa --- 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-b5237d8 [2022-11-21 09:04:00,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 09:04:00,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 09:04:00,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 09:04:00,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 09:04:00,394 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 09:04:00,397 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 09:04:00,401 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 09:04:00,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 09:04:00,414 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 09:04:00,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 09:04:00,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 09:04:00,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 09:04:00,422 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 09:04:00,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 09:04:00,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 09:04:00,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 09:04:00,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 09:04:00,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 09:04:00,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 09:04:00,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 09:04:00,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 09:04:00,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 09:04:00,449 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 09:04:00,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 09:04:00,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 09:04:00,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 09:04:00,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 09:04:00,461 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 09:04:00,462 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 09:04:00,462 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 09:04:00,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 09:04:00,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 09:04:00,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 09:04:00,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 09:04:00,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 09:04:00,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 09:04:00,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 09:04:00,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 09:04:00,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 09:04:00,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 09:04:00,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 09:04:00,519 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 09:04:00,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 09:04:00,520 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 09:04:00,521 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 09:04:00,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 09:04:00,522 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 09:04:00,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 09:04:00,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 09:04:00,523 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 09:04:00,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 09:04:00,525 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 09:04:00,525 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 09:04:00,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 09:04:00,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 09:04:00,526 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 09:04:00,526 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 09:04:00,526 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 09:04:00,527 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 09:04:00,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 09:04:00,527 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 09:04:00,527 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 09:04:00,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 09:04:00,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 09:04:00,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 09:04:00,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:04:00,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 09:04:00,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 09:04:00,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 09:04:00,530 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 09:04:00,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 09:04:00,531 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 09:04:00,531 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 09:04:00,531 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 09:04:00,531 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_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6df98e8ac4880739ff8c7fa9cf00b32c56a4c64770b2bc9bcfef3d013872fa [2022-11-21 09:04:00,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 09:04:00,885 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 09:04:00,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 09:04:00,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 09:04:00,891 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 09:04:00,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-11-21 09:04:04,074 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 09:04:04,353 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 09:04:04,353 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-11-21 09:04:04,369 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/data/9bdd9f4a8/bf8ed0e051284ffd99a67715032f5eae/FLAG00c506699 [2022-11-21 09:04:04,385 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/data/9bdd9f4a8/bf8ed0e051284ffd99a67715032f5eae [2022-11-21 09:04:04,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 09:04:04,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 09:04:04,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 09:04:04,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 09:04:04,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 09:04:04,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:04" (1/1) ... [2022-11-21 09:04:04,405 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@726b5871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:04, skipping insertion in model container [2022-11-21 09:04:04,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:04:04" (1/1) ... [2022-11-21 09:04:04,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 09:04:04,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 09:04:04,679 WARN L237 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_4ebbab39-5c3e-4773-ae78-506c330236de/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2022-11-21 09:04:04,972 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:04:04,983 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 09:04:04,996 WARN L237 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_4ebbab39-5c3e-4773-ae78-506c330236de/sv-benchmarks/c/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2022-11-21 09:04:05,058 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 09:04:05,100 INFO L208 MainTranslator]: Completed translation [2022-11-21 09:04:05,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05 WrapperNode [2022-11-21 09:04:05,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 09:04:05,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 09:04:05,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 09:04:05,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 09:04:05,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,129 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,173 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 150 [2022-11-21 09:04:05,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 09:04:05,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 09:04:05,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 09:04:05,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 09:04:05,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,201 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 09:04:05,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 09:04:05,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 09:04:05,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 09:04:05,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (1/1) ... [2022-11-21 09:04:05,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 09:04:05,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 09:04:05,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 09:04:05,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 09:04:05,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 09:04:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 09:04:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 09:04:05,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 09:04:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 09:04:05,320 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-11-21 09:04:05,320 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-11-21 09:04:05,321 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-11-21 09:04:05,322 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-11-21 09:04:05,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 09:04:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 09:04:05,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 09:04:05,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 09:04:05,325 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 09:04:05,571 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 09:04:05,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 09:04:06,152 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 09:04:06,417 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 09:04:06,418 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 09:04:06,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:06 BoogieIcfgContainer [2022-11-21 09:04:06,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 09:04:06,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 09:04:06,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 09:04:06,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 09:04:06,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:04:04" (1/3) ... [2022-11-21 09:04:06,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d399901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:06, skipping insertion in model container [2022-11-21 09:04:06,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:04:05" (2/3) ... [2022-11-21 09:04:06,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d399901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:04:06, skipping insertion in model container [2022-11-21 09:04:06,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:06" (3/3) ... [2022-11-21 09:04:06,432 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2022-11-21 09:04:06,442 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 09:04:06,455 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 09:04:06,455 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 09:04:06,455 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 09:04:06,529 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-21 09:04:06,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 99 transitions, 208 flow [2022-11-21 09:04:06,642 INFO L130 PetriNetUnfolder]: 2/97 cut-off events. [2022-11-21 09:04:06,642 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:04:06,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 97 events. 2/97 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2022-11-21 09:04:06,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 99 transitions, 208 flow [2022-11-21 09:04:06,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 200 flow [2022-11-21 09:04:06,665 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 09:04:06,672 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;@757345f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 09:04:06,673 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-11-21 09:04:06,691 INFO L130 PetriNetUnfolder]: 0/59 cut-off events. [2022-11-21 09:04:06,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-21 09:04:06,692 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:06,693 INFO L209 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] [2022-11-21 09:04:06,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:06,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:06,700 INFO L85 PathProgramCache]: Analyzing trace with hash 28426972, now seen corresponding path program 1 times [2022-11-21 09:04:06,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:06,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059031163] [2022-11-21 09:04:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:06,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:07,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:07,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:07,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059031163] [2022-11-21 09:04:07,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059031163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:07,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:07,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 09:04:07,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209219080] [2022-11-21 09:04:07,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:07,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 09:04:07,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 09:04:07,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 09:04:07,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 99 [2022-11-21 09:04:07,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2022-11-21 09:04:07,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:07,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 99 [2022-11-21 09:04:07,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:07,827 INFO L130 PetriNetUnfolder]: 60/468 cut-off events. [2022-11-21 09:04:07,827 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-21 09:04:07,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 595 conditions, 468 events. 60/468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2645 event pairs, 25 based on Foata normal form. 23/460 useless extension candidates. Maximal degree in co-relation 546. Up to 88 conditions per place. [2022-11-21 09:04:07,837 INFO L137 encePairwiseOnDemand]: 94/99 looper letters, 14 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2022-11-21 09:04:07,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 98 transitions, 234 flow [2022-11-21 09:04:07,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 09:04:07,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-21 09:04:07,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2022-11-21 09:04:07,862 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9191919191919192 [2022-11-21 09:04:07,863 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2022-11-21 09:04:07,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2022-11-21 09:04:07,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:07,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2022-11-21 09:04:07,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 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) [2022-11-21 09:04:07,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2022-11-21 09:04:07,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 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) [2022-11-21 09:04:07,888 INFO L175 Difference]: Start difference. First operand has 102 places, 97 transitions, 200 flow. Second operand 3 states and 273 transitions. [2022-11-21 09:04:07,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 98 transitions, 234 flow [2022-11-21 09:04:07,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 98 transitions, 232 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:07,899 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 194 flow [2022-11-21 09:04:07,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=194, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2022-11-21 09:04:07,908 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, -2 predicate places. [2022-11-21 09:04:07,908 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 194 flow [2022-11-21 09:04:07,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 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) [2022-11-21 09:04:07,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:07,910 INFO L209 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] [2022-11-21 09:04:07,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 09:04:07,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:07,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:07,912 INFO L85 PathProgramCache]: Analyzing trace with hash 200134319, now seen corresponding path program 1 times [2022-11-21 09:04:07,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:07,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842793696] [2022-11-21 09:04:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:07,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:09,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:09,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:09,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842793696] [2022-11-21 09:04:09,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842793696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:09,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:09,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:09,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719191146] [2022-11-21 09:04:09,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:09,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:09,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:09,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:09,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:09,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-11-21 09:04:09,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 194 flow. Second operand has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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) [2022-11-21 09:04:09,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:09,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-11-21 09:04:09,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:09,808 INFO L130 PetriNetUnfolder]: 328/1016 cut-off events. [2022-11-21 09:04:09,809 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2022-11-21 09:04:09,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 1016 events. 328/1016 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 6478 event pairs, 62 based on Foata normal form. 0/982 useless extension candidates. Maximal degree in co-relation 1599. Up to 189 conditions per place. [2022-11-21 09:04:09,814 INFO L137 encePairwiseOnDemand]: 93/99 looper letters, 31 selfloop transitions, 2 changer transitions 55/144 dead transitions. [2022-11-21 09:04:09,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 144 transitions, 470 flow [2022-11-21 09:04:09,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:04:09,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:04:09,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 684 transitions. [2022-11-21 09:04:09,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7676767676767676 [2022-11-21 09:04:09,818 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 684 transitions. [2022-11-21 09:04:09,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 684 transitions. [2022-11-21 09:04:09,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:09,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 684 transitions. [2022-11-21 09:04:09,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 76.0) internal successors, (684), 9 states have internal predecessors, (684), 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) [2022-11-21 09:04:09,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 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) [2022-11-21 09:04:09,825 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 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) [2022-11-21 09:04:09,825 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 194 flow. Second operand 9 states and 684 transitions. [2022-11-21 09:04:09,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 144 transitions, 470 flow [2022-11-21 09:04:09,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 144 transitions, 452 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-21 09:04:09,830 INFO L231 Difference]: Finished difference. Result has 113 places, 83 transitions, 190 flow [2022-11-21 09:04:09,830 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=190, PETRI_PLACES=113, PETRI_TRANSITIONS=83} [2022-11-21 09:04:09,831 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2022-11-21 09:04:09,831 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 83 transitions, 190 flow [2022-11-21 09:04:09,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 69.71428571428571) internal successors, (488), 7 states have internal predecessors, (488), 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) [2022-11-21 09:04:09,832 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:09,832 INFO L209 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] [2022-11-21 09:04:09,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 09:04:09,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:09,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:09,833 INFO L85 PathProgramCache]: Analyzing trace with hash -815653267, now seen corresponding path program 1 times [2022-11-21 09:04:09,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:09,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909493064] [2022-11-21 09:04:09,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:09,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:10,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:10,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909493064] [2022-11-21 09:04:10,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909493064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:10,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:10,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:10,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689667000] [2022-11-21 09:04:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:10,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:10,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:10,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:10,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:10,782 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-11-21 09:04:10,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 83 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2022-11-21 09:04:10,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:10,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-11-21 09:04:10,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:11,198 INFO L130 PetriNetUnfolder]: 141/412 cut-off events. [2022-11-21 09:04:11,198 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-21 09:04:11,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 412 events. 141/412 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1733 event pairs, 51 based on Foata normal form. 10/397 useless extension candidates. Maximal degree in co-relation 766. Up to 135 conditions per place. [2022-11-21 09:04:11,204 INFO L137 encePairwiseOnDemand]: 92/99 looper letters, 29 selfloop transitions, 3 changer transitions 25/113 dead transitions. [2022-11-21 09:04:11,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 113 transitions, 385 flow [2022-11-21 09:04:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:11,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 729 transitions. [2022-11-21 09:04:11,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7363636363636363 [2022-11-21 09:04:11,209 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 729 transitions. [2022-11-21 09:04:11,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 729 transitions. [2022-11-21 09:04:11,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:11,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 729 transitions. [2022-11-21 09:04:11,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 72.9) internal successors, (729), 10 states have internal predecessors, (729), 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) [2022-11-21 09:04:11,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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) [2022-11-21 09:04:11,216 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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) [2022-11-21 09:04:11,216 INFO L175 Difference]: Start difference. First operand has 113 places, 83 transitions, 190 flow. Second operand 10 states and 729 transitions. [2022-11-21 09:04:11,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 113 transitions, 385 flow [2022-11-21 09:04:11,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 113 transitions, 351 flow, removed 14 selfloop flow, removed 8 redundant places. [2022-11-21 09:04:11,225 INFO L231 Difference]: Finished difference. Result has 105 places, 83 transitions, 196 flow [2022-11-21 09:04:11,225 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=196, PETRI_PLACES=105, PETRI_TRANSITIONS=83} [2022-11-21 09:04:11,227 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 3 predicate places. [2022-11-21 09:04:11,227 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 83 transitions, 196 flow [2022-11-21 09:04:11,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.14285714285714) internal successors, (491), 7 states have internal predecessors, (491), 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) [2022-11-21 09:04:11,228 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:11,228 INFO L209 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] [2022-11-21 09:04:11,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 09:04:11,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:11,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:11,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1639805428, now seen corresponding path program 1 times [2022-11-21 09:04:11,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:11,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435719914] [2022-11-21 09:04:11,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:11,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:11,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:13,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:13,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:13,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435719914] [2022-11-21 09:04:13,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435719914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:13,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:13,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 09:04:13,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281462698] [2022-11-21 09:04:13,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:13,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:04:13,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:13,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:04:13,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:04:13,284 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-11-21 09:04:13,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 83 transitions, 196 flow. Second operand has 12 states, 12 states have (on average 71.75) internal successors, (861), 12 states have internal predecessors, (861), 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) [2022-11-21 09:04:13,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:13,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-11-21 09:04:13,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:14,018 INFO L130 PetriNetUnfolder]: 144/442 cut-off events. [2022-11-21 09:04:14,018 INFO L131 PetriNetUnfolder]: For 111/111 co-relation queries the response was YES. [2022-11-21 09:04:14,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 442 events. 144/442 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2049 event pairs, 28 based on Foata normal form. 10/424 useless extension candidates. Maximal degree in co-relation 839. Up to 144 conditions per place. [2022-11-21 09:04:14,022 INFO L137 encePairwiseOnDemand]: 88/99 looper letters, 28 selfloop transitions, 7 changer transitions 22/116 dead transitions. [2022-11-21 09:04:14,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 116 transitions, 398 flow [2022-11-21 09:04:14,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:04:14,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:04:14,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 969 transitions. [2022-11-21 09:04:14,027 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.752913752913753 [2022-11-21 09:04:14,027 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 969 transitions. [2022-11-21 09:04:14,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 969 transitions. [2022-11-21 09:04:14,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:14,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 969 transitions. [2022-11-21 09:04:14,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.53846153846153) internal successors, (969), 13 states have internal predecessors, (969), 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) [2022-11-21 09:04:14,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 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) [2022-11-21 09:04:14,038 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 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) [2022-11-21 09:04:14,039 INFO L175 Difference]: Start difference. First operand has 105 places, 83 transitions, 196 flow. Second operand 13 states and 969 transitions. [2022-11-21 09:04:14,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 116 transitions, 398 flow [2022-11-21 09:04:14,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 116 transitions, 364 flow, removed 14 selfloop flow, removed 9 redundant places. [2022-11-21 09:04:14,046 INFO L231 Difference]: Finished difference. Result has 110 places, 86 transitions, 237 flow [2022-11-21 09:04:14,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=237, PETRI_PLACES=110, PETRI_TRANSITIONS=86} [2022-11-21 09:04:14,048 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 8 predicate places. [2022-11-21 09:04:14,049 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 86 transitions, 237 flow [2022-11-21 09:04:14,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 71.75) internal successors, (861), 12 states have internal predecessors, (861), 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) [2022-11-21 09:04:14,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:14,054 INFO L209 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] [2022-11-21 09:04:14,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 09:04:14,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:14,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:14,056 INFO L85 PathProgramCache]: Analyzing trace with hash 725460134, now seen corresponding path program 2 times [2022-11-21 09:04:14,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:14,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940522506] [2022-11-21 09:04:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:14,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:15,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:15,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:15,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940522506] [2022-11-21 09:04:15,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940522506] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:15,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:15,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 09:04:15,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117194529] [2022-11-21 09:04:15,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:15,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 09:04:15,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:15,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 09:04:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:04:15,995 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-11-21 09:04:15,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 86 transitions, 237 flow. Second operand has 14 states, 14 states have (on average 71.5) internal successors, (1001), 14 states have internal predecessors, (1001), 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) [2022-11-21 09:04:15,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:15,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-11-21 09:04:15,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:16,658 INFO L130 PetriNetUnfolder]: 132/424 cut-off events. [2022-11-21 09:04:16,659 INFO L131 PetriNetUnfolder]: For 553/557 co-relation queries the response was YES. [2022-11-21 09:04:16,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 424 events. 132/424 cut-off events. For 553/557 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1929 event pairs, 26 based on Foata normal form. 6/399 useless extension candidates. Maximal degree in co-relation 1055. Up to 183 conditions per place. [2022-11-21 09:04:16,663 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 28 selfloop transitions, 12 changer transitions 13/112 dead transitions. [2022-11-21 09:04:16,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 112 transitions, 476 flow [2022-11-21 09:04:16,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 09:04:16,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-21 09:04:16,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 962 transitions. [2022-11-21 09:04:16,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7474747474747475 [2022-11-21 09:04:16,667 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 962 transitions. [2022-11-21 09:04:16,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 962 transitions. [2022-11-21 09:04:16,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:16,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 962 transitions. [2022-11-21 09:04:16,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 74.0) internal successors, (962), 13 states have internal predecessors, (962), 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) [2022-11-21 09:04:16,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 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) [2022-11-21 09:04:16,676 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 99.0) internal successors, (1386), 14 states have internal predecessors, (1386), 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) [2022-11-21 09:04:16,676 INFO L175 Difference]: Start difference. First operand has 110 places, 86 transitions, 237 flow. Second operand 13 states and 962 transitions. [2022-11-21 09:04:16,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 112 transitions, 476 flow [2022-11-21 09:04:16,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 112 transitions, 457 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-11-21 09:04:16,686 INFO L231 Difference]: Finished difference. Result has 114 places, 91 transitions, 291 flow [2022-11-21 09:04:16,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=291, PETRI_PLACES=114, PETRI_TRANSITIONS=91} [2022-11-21 09:04:16,690 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 12 predicate places. [2022-11-21 09:04:16,690 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 91 transitions, 291 flow [2022-11-21 09:04:16,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 71.5) internal successors, (1001), 14 states have internal predecessors, (1001), 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) [2022-11-21 09:04:16,693 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:16,693 INFO L209 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] [2022-11-21 09:04:16,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 09:04:16,693 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:16,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1222265296, now seen corresponding path program 3 times [2022-11-21 09:04:16,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:16,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945152402] [2022-11-21 09:04:16,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:16,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:18,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:18,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:18,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945152402] [2022-11-21 09:04:18,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945152402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:18,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:18,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-21 09:04:18,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561800342] [2022-11-21 09:04:18,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:18,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 09:04:18,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:18,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 09:04:18,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:04:18,270 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 99 [2022-11-21 09:04:18,272 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 91 transitions, 291 flow. Second operand has 15 states, 15 states have (on average 71.4) internal successors, (1071), 15 states have internal predecessors, (1071), 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) [2022-11-21 09:04:18,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:18,272 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 99 [2022-11-21 09:04:18,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:18,940 INFO L130 PetriNetUnfolder]: 139/457 cut-off events. [2022-11-21 09:04:18,940 INFO L131 PetriNetUnfolder]: For 886/1016 co-relation queries the response was YES. [2022-11-21 09:04:18,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 457 events. 139/457 cut-off events. For 886/1016 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2149 event pairs, 20 based on Foata normal form. 8/431 useless extension candidates. Maximal degree in co-relation 1271. Up to 181 conditions per place. [2022-11-21 09:04:18,944 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 34 selfloop transitions, 14 changer transitions 19/126 dead transitions. [2022-11-21 09:04:18,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 619 flow [2022-11-21 09:04:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 09:04:18,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-21 09:04:18,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1111 transitions. [2022-11-21 09:04:18,950 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7481481481481481 [2022-11-21 09:04:18,950 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1111 transitions. [2022-11-21 09:04:18,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1111 transitions. [2022-11-21 09:04:18,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:18,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1111 transitions. [2022-11-21 09:04:18,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 74.06666666666666) internal successors, (1111), 15 states have internal predecessors, (1111), 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) [2022-11-21 09:04:18,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 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) [2022-11-21 09:04:18,959 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 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) [2022-11-21 09:04:18,959 INFO L175 Difference]: Start difference. First operand has 114 places, 91 transitions, 291 flow. Second operand 15 states and 1111 transitions. [2022-11-21 09:04:18,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 619 flow [2022-11-21 09:04:18,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 126 transitions, 564 flow, removed 16 selfloop flow, removed 9 redundant places. [2022-11-21 09:04:18,966 INFO L231 Difference]: Finished difference. Result has 124 places, 96 transitions, 349 flow [2022-11-21 09:04:18,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=349, PETRI_PLACES=124, PETRI_TRANSITIONS=96} [2022-11-21 09:04:18,969 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 22 predicate places. [2022-11-21 09:04:18,970 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 96 transitions, 349 flow [2022-11-21 09:04:18,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.4) internal successors, (1071), 15 states have internal predecessors, (1071), 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) [2022-11-21 09:04:18,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:18,971 INFO L209 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] [2022-11-21 09:04:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 09:04:18,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash -35859276, now seen corresponding path program 4 times [2022-11-21 09:04:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:18,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745635039] [2022-11-21 09:04:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:18,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:20,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745635039] [2022-11-21 09:04:20,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745635039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:20,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:20,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 09:04:20,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607639757] [2022-11-21 09:04:20,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:20,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:04:20,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:20,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:04:20,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:20,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-11-21 09:04:20,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 96 transitions, 349 flow. Second operand has 16 states, 16 states have (on average 70.375) internal successors, (1126), 16 states have internal predecessors, (1126), 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) [2022-11-21 09:04:20,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:20,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-11-21 09:04:20,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:21,463 INFO L130 PetriNetUnfolder]: 124/419 cut-off events. [2022-11-21 09:04:21,463 INFO L131 PetriNetUnfolder]: For 1289/1706 co-relation queries the response was YES. [2022-11-21 09:04:21,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 419 events. 124/419 cut-off events. For 1289/1706 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1983 event pairs, 13 based on Foata normal form. 13/403 useless extension candidates. Maximal degree in co-relation 1284. Up to 149 conditions per place. [2022-11-21 09:04:21,468 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 31 selfloop transitions, 16 changer transitions 19/124 dead transitions. [2022-11-21 09:04:21,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 124 transitions, 680 flow [2022-11-21 09:04:21,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 09:04:21,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-21 09:04:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1163 transitions. [2022-11-21 09:04:21,472 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7342171717171717 [2022-11-21 09:04:21,472 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1163 transitions. [2022-11-21 09:04:21,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1163 transitions. [2022-11-21 09:04:21,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:21,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1163 transitions. [2022-11-21 09:04:21,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 72.6875) internal successors, (1163), 16 states have internal predecessors, (1163), 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) [2022-11-21 09:04:21,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 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) [2022-11-21 09:04:21,480 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 99.0) internal successors, (1683), 17 states have internal predecessors, (1683), 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) [2022-11-21 09:04:21,481 INFO L175 Difference]: Start difference. First operand has 124 places, 96 transitions, 349 flow. Second operand 16 states and 1163 transitions. [2022-11-21 09:04:21,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 124 transitions, 680 flow [2022-11-21 09:04:21,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 124 transitions, 588 flow, removed 39 selfloop flow, removed 11 redundant places. [2022-11-21 09:04:21,488 INFO L231 Difference]: Finished difference. Result has 129 places, 97 transitions, 379 flow [2022-11-21 09:04:21,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=379, PETRI_PLACES=129, PETRI_TRANSITIONS=97} [2022-11-21 09:04:21,489 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 27 predicate places. [2022-11-21 09:04:21,489 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 97 transitions, 379 flow [2022-11-21 09:04:21,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 70.375) internal successors, (1126), 16 states have internal predecessors, (1126), 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) [2022-11-21 09:04:21,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:21,490 INFO L209 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] [2022-11-21 09:04:21,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 09:04:21,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:21,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1747736875, now seen corresponding path program 1 times [2022-11-21 09:04:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:21,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975532530] [2022-11-21 09:04:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:22,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:22,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:22,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975532530] [2022-11-21 09:04:22,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975532530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:22,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:22,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 09:04:22,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871845070] [2022-11-21 09:04:22,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:22,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:04:22,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:22,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:04:22,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:04:22,522 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 99 [2022-11-21 09:04:22,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 97 transitions, 379 flow. Second operand has 11 states, 11 states have (on average 64.54545454545455) internal successors, (710), 11 states have internal predecessors, (710), 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) [2022-11-21 09:04:22,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:22,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 99 [2022-11-21 09:04:22,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:24,322 INFO L130 PetriNetUnfolder]: 453/1137 cut-off events. [2022-11-21 09:04:24,322 INFO L131 PetriNetUnfolder]: For 1964/2081 co-relation queries the response was YES. [2022-11-21 09:04:24,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 1137 events. 453/1137 cut-off events. For 1964/2081 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7344 event pairs, 68 based on Foata normal form. 17/1133 useless extension candidates. Maximal degree in co-relation 3168. Up to 343 conditions per place. [2022-11-21 09:04:24,332 INFO L137 encePairwiseOnDemand]: 82/99 looper letters, 70 selfloop transitions, 38 changer transitions 51/210 dead transitions. [2022-11-21 09:04:24,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 210 transitions, 1330 flow [2022-11-21 09:04:24,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 09:04:24,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-21 09:04:24,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1496 transitions. [2022-11-21 09:04:24,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6868686868686869 [2022-11-21 09:04:24,337 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1496 transitions. [2022-11-21 09:04:24,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1496 transitions. [2022-11-21 09:04:24,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:24,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1496 transitions. [2022-11-21 09:04:24,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 68.0) internal successors, (1496), 22 states have internal predecessors, (1496), 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) [2022-11-21 09:04:24,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 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) [2022-11-21 09:04:24,347 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 99.0) internal successors, (2277), 23 states have internal predecessors, (2277), 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) [2022-11-21 09:04:24,347 INFO L175 Difference]: Start difference. First operand has 129 places, 97 transitions, 379 flow. Second operand 22 states and 1496 transitions. [2022-11-21 09:04:24,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 210 transitions, 1330 flow [2022-11-21 09:04:24,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 210 transitions, 1197 flow, removed 47 selfloop flow, removed 14 redundant places. [2022-11-21 09:04:24,361 INFO L231 Difference]: Finished difference. Result has 148 places, 127 transitions, 738 flow [2022-11-21 09:04:24,361 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=738, PETRI_PLACES=148, PETRI_TRANSITIONS=127} [2022-11-21 09:04:24,362 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 46 predicate places. [2022-11-21 09:04:24,362 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 127 transitions, 738 flow [2022-11-21 09:04:24,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 64.54545454545455) internal successors, (710), 11 states have internal predecessors, (710), 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) [2022-11-21 09:04:24,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:24,363 INFO L209 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] [2022-11-21 09:04:24,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 09:04:24,363 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:24,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:24,364 INFO L85 PathProgramCache]: Analyzing trace with hash 477011299, now seen corresponding path program 2 times [2022-11-21 09:04:24,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:24,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946044842] [2022-11-21 09:04:24,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:24,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:25,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:25,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946044842] [2022-11-21 09:04:25,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946044842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:25,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:25,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-21 09:04:25,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326525230] [2022-11-21 09:04:25,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:25,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 09:04:25,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 09:04:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-11-21 09:04:25,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 99 [2022-11-21 09:04:25,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 127 transitions, 738 flow. Second operand has 15 states, 15 states have (on average 68.66666666666667) internal successors, (1030), 15 states have internal predecessors, (1030), 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) [2022-11-21 09:04:25,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:25,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 99 [2022-11-21 09:04:25,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:26,594 INFO L130 PetriNetUnfolder]: 189/654 cut-off events. [2022-11-21 09:04:26,594 INFO L131 PetriNetUnfolder]: For 5157/7163 co-relation queries the response was YES. [2022-11-21 09:04:26,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3030 conditions, 654 events. 189/654 cut-off events. For 5157/7163 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3771 event pairs, 27 based on Foata normal form. 42/650 useless extension candidates. Maximal degree in co-relation 2936. Up to 223 conditions per place. [2022-11-21 09:04:26,602 INFO L137 encePairwiseOnDemand]: 83/99 looper letters, 55 selfloop transitions, 20 changer transitions 31/166 dead transitions. [2022-11-21 09:04:26,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 166 transitions, 1385 flow [2022-11-21 09:04:26,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 09:04:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1003 transitions. [2022-11-21 09:04:26,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7236652236652237 [2022-11-21 09:04:26,608 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1003 transitions. [2022-11-21 09:04:26,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1003 transitions. [2022-11-21 09:04:26,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:26,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1003 transitions. [2022-11-21 09:04:26,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 71.64285714285714) internal successors, (1003), 14 states have internal predecessors, (1003), 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) [2022-11-21 09:04:26,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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) [2022-11-21 09:04:26,621 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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) [2022-11-21 09:04:26,621 INFO L175 Difference]: Start difference. First operand has 148 places, 127 transitions, 738 flow. Second operand 14 states and 1003 transitions. [2022-11-21 09:04:26,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 166 transitions, 1385 flow [2022-11-21 09:04:26,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 166 transitions, 1281 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-11-21 09:04:26,641 INFO L231 Difference]: Finished difference. Result has 147 places, 128 transitions, 769 flow [2022-11-21 09:04:26,642 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=769, PETRI_PLACES=147, PETRI_TRANSITIONS=128} [2022-11-21 09:04:26,643 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 45 predicate places. [2022-11-21 09:04:26,643 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 128 transitions, 769 flow [2022-11-21 09:04:26,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 68.66666666666667) internal successors, (1030), 15 states have internal predecessors, (1030), 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) [2022-11-21 09:04:26,644 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:26,644 INFO L209 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] [2022-11-21 09:04:26,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 09:04:26,645 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:26,645 INFO L85 PathProgramCache]: Analyzing trace with hash 761129897, now seen corresponding path program 3 times [2022-11-21 09:04:26,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:26,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506414471] [2022-11-21 09:04:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:26,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:27,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:27,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506414471] [2022-11-21 09:04:27,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506414471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:27,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:27,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 09:04:27,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594515844] [2022-11-21 09:04:27,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:27,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 09:04:27,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:27,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 09:04:27,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 09:04:27,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-11-21 09:04:27,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 128 transitions, 769 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 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) [2022-11-21 09:04:27,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:27,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-11-21 09:04:27,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:27,846 INFO L130 PetriNetUnfolder]: 163/567 cut-off events. [2022-11-21 09:04:27,847 INFO L131 PetriNetUnfolder]: For 4405/6206 co-relation queries the response was YES. [2022-11-21 09:04:27,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 567 events. 163/567 cut-off events. For 4405/6206 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3104 event pairs, 25 based on Foata normal form. 28/564 useless extension candidates. Maximal degree in co-relation 2655. Up to 204 conditions per place. [2022-11-21 09:04:27,854 INFO L137 encePairwiseOnDemand]: 89/99 looper letters, 39 selfloop transitions, 31 changer transitions 19/155 dead transitions. [2022-11-21 09:04:27,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 155 transitions, 1315 flow [2022-11-21 09:04:27,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 09:04:27,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 09:04:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 783 transitions. [2022-11-21 09:04:27,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7909090909090909 [2022-11-21 09:04:27,857 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 783 transitions. [2022-11-21 09:04:27,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 783 transitions. [2022-11-21 09:04:27,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:27,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 783 transitions. [2022-11-21 09:04:27,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.3) internal successors, (783), 10 states have internal predecessors, (783), 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) [2022-11-21 09:04:27,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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) [2022-11-21 09:04:27,862 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 99.0) internal successors, (1089), 11 states have internal predecessors, (1089), 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) [2022-11-21 09:04:27,862 INFO L175 Difference]: Start difference. First operand has 147 places, 128 transitions, 769 flow. Second operand 10 states and 783 transitions. [2022-11-21 09:04:27,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 155 transitions, 1315 flow [2022-11-21 09:04:27,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 155 transitions, 1154 flow, removed 65 selfloop flow, removed 15 redundant places. [2022-11-21 09:04:27,877 INFO L231 Difference]: Finished difference. Result has 143 places, 131 transitions, 850 flow [2022-11-21 09:04:27,877 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=850, PETRI_PLACES=143, PETRI_TRANSITIONS=131} [2022-11-21 09:04:27,878 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 41 predicate places. [2022-11-21 09:04:27,878 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 131 transitions, 850 flow [2022-11-21 09:04:27,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 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) [2022-11-21 09:04:27,879 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:27,879 INFO L209 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] [2022-11-21 09:04:27,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 09:04:27,879 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:27,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:27,880 INFO L85 PathProgramCache]: Analyzing trace with hash 648663433, now seen corresponding path program 4 times [2022-11-21 09:04:27,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:27,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679628529] [2022-11-21 09:04:27,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:27,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:29,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:29,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:29,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679628529] [2022-11-21 09:04:29,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679628529] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:29,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:29,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-21 09:04:29,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296264989] [2022-11-21 09:04:29,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:29,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 09:04:29,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:29,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 09:04:29,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-21 09:04:29,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-11-21 09:04:29,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 131 transitions, 850 flow. Second operand has 11 states, 11 states have (on average 71.0909090909091) internal successors, (782), 11 states have internal predecessors, (782), 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) [2022-11-21 09:04:29,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:29,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-11-21 09:04:29,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:29,924 INFO L130 PetriNetUnfolder]: 157/553 cut-off events. [2022-11-21 09:04:29,925 INFO L131 PetriNetUnfolder]: For 5505/8019 co-relation queries the response was YES. [2022-11-21 09:04:29,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2853 conditions, 553 events. 157/553 cut-off events. For 5505/8019 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3002 event pairs, 22 based on Foata normal form. 40/564 useless extension candidates. Maximal degree in co-relation 2764. Up to 188 conditions per place. [2022-11-21 09:04:29,933 INFO L137 encePairwiseOnDemand]: 84/99 looper letters, 50 selfloop transitions, 56 changer transitions 0/168 dead transitions. [2022-11-21 09:04:29,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 168 transitions, 1586 flow [2022-11-21 09:04:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 09:04:29,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1030 transitions. [2022-11-21 09:04:29,936 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7431457431457431 [2022-11-21 09:04:29,937 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1030 transitions. [2022-11-21 09:04:29,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1030 transitions. [2022-11-21 09:04:29,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:29,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1030 transitions. [2022-11-21 09:04:29,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 73.57142857142857) internal successors, (1030), 14 states have internal predecessors, (1030), 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) [2022-11-21 09:04:29,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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) [2022-11-21 09:04:29,944 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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) [2022-11-21 09:04:29,944 INFO L175 Difference]: Start difference. First operand has 143 places, 131 transitions, 850 flow. Second operand 14 states and 1030 transitions. [2022-11-21 09:04:29,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 168 transitions, 1586 flow [2022-11-21 09:04:29,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 168 transitions, 1351 flow, removed 96 selfloop flow, removed 8 redundant places. [2022-11-21 09:04:29,961 INFO L231 Difference]: Finished difference. Result has 148 places, 156 transitions, 1217 flow [2022-11-21 09:04:29,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=764, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1217, PETRI_PLACES=148, PETRI_TRANSITIONS=156} [2022-11-21 09:04:29,962 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 46 predicate places. [2022-11-21 09:04:29,963 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 156 transitions, 1217 flow [2022-11-21 09:04:29,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 71.0909090909091) internal successors, (782), 11 states have internal predecessors, (782), 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) [2022-11-21 09:04:29,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:29,964 INFO L209 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] [2022-11-21 09:04:29,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 09:04:29,964 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:29,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:29,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1502777463, now seen corresponding path program 5 times [2022-11-21 09:04:29,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:29,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040324156] [2022-11-21 09:04:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:29,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:30,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:30,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:30,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040324156] [2022-11-21 09:04:30,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040324156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:30,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:30,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-21 09:04:30,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830920679] [2022-11-21 09:04:30,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:30,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 09:04:30,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:30,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 09:04:30,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-21 09:04:30,906 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 99 [2022-11-21 09:04:30,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 156 transitions, 1217 flow. Second operand has 12 states, 12 states have (on average 63.416666666666664) internal successors, (761), 12 states have internal predecessors, (761), 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) [2022-11-21 09:04:30,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:30,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 99 [2022-11-21 09:04:30,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:32,221 INFO L130 PetriNetUnfolder]: 537/1370 cut-off events. [2022-11-21 09:04:32,222 INFO L131 PetriNetUnfolder]: For 10763/11541 co-relation queries the response was YES. [2022-11-21 09:04:32,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6713 conditions, 1370 events. 537/1370 cut-off events. For 10763/11541 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 9278 event pairs, 47 based on Foata normal form. 37/1387 useless extension candidates. Maximal degree in co-relation 6617. Up to 384 conditions per place. [2022-11-21 09:04:32,236 INFO L137 encePairwiseOnDemand]: 86/99 looper letters, 85 selfloop transitions, 20 changer transitions 131/286 dead transitions. [2022-11-21 09:04:32,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 286 transitions, 3134 flow [2022-11-21 09:04:32,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 09:04:32,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-11-21 09:04:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1282 transitions. [2022-11-21 09:04:32,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6815523657628921 [2022-11-21 09:04:32,240 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1282 transitions. [2022-11-21 09:04:32,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1282 transitions. [2022-11-21 09:04:32,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:32,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1282 transitions. [2022-11-21 09:04:32,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 67.47368421052632) internal successors, (1282), 19 states have internal predecessors, (1282), 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) [2022-11-21 09:04:32,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:32,248 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 99.0) internal successors, (1980), 20 states have internal predecessors, (1980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:32,249 INFO L175 Difference]: Start difference. First operand has 148 places, 156 transitions, 1217 flow. Second operand 19 states and 1282 transitions. [2022-11-21 09:04:32,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 286 transitions, 3134 flow [2022-11-21 09:04:32,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 286 transitions, 2929 flow, removed 94 selfloop flow, removed 5 redundant places. [2022-11-21 09:04:32,286 INFO L231 Difference]: Finished difference. Result has 175 places, 130 transitions, 902 flow [2022-11-21 09:04:32,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=902, PETRI_PLACES=175, PETRI_TRANSITIONS=130} [2022-11-21 09:04:32,287 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 73 predicate places. [2022-11-21 09:04:32,288 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 130 transitions, 902 flow [2022-11-21 09:04:32,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 63.416666666666664) internal successors, (761), 12 states have internal predecessors, (761), 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) [2022-11-21 09:04:32,289 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:32,289 INFO L209 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] [2022-11-21 09:04:32,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 09:04:32,289 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:32,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:32,290 INFO L85 PathProgramCache]: Analyzing trace with hash -825062875, now seen corresponding path program 6 times [2022-11-21 09:04:32,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:32,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150266676] [2022-11-21 09:04:32,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:32,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:33,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:33,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150266676] [2022-11-21 09:04:33,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150266676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:33,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:33,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-21 09:04:33,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629256109] [2022-11-21 09:04:33,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:33,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 09:04:33,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:33,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 09:04:33,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2022-11-21 09:04:33,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 99 [2022-11-21 09:04:33,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 130 transitions, 902 flow. Second operand has 17 states, 17 states have (on average 63.64705882352941) internal successors, (1082), 17 states have internal predecessors, (1082), 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) [2022-11-21 09:04:33,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:33,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 99 [2022-11-21 09:04:33,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:35,317 INFO L130 PetriNetUnfolder]: 235/717 cut-off events. [2022-11-21 09:04:35,318 INFO L131 PetriNetUnfolder]: For 8494/8893 co-relation queries the response was YES. [2022-11-21 09:04:35,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3959 conditions, 717 events. 235/717 cut-off events. For 8494/8893 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3948 event pairs, 24 based on Foata normal form. 30/735 useless extension candidates. Maximal degree in co-relation 3849. Up to 175 conditions per place. [2022-11-21 09:04:35,328 INFO L137 encePairwiseOnDemand]: 80/99 looper letters, 84 selfloop transitions, 36 changer transitions 70/240 dead transitions. [2022-11-21 09:04:35,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 240 transitions, 2719 flow [2022-11-21 09:04:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 09:04:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 09:04:35,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1630 transitions. [2022-11-21 09:04:35,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.686026936026936 [2022-11-21 09:04:35,337 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1630 transitions. [2022-11-21 09:04:35,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1630 transitions. [2022-11-21 09:04:35,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:35,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1630 transitions. [2022-11-21 09:04:35,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 67.91666666666667) internal successors, (1630), 24 states have internal predecessors, (1630), 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) [2022-11-21 09:04:35,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 99.0) internal successors, (2475), 25 states have internal predecessors, (2475), 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) [2022-11-21 09:04:35,358 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 99.0) internal successors, (2475), 25 states have internal predecessors, (2475), 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) [2022-11-21 09:04:35,367 INFO L175 Difference]: Start difference. First operand has 175 places, 130 transitions, 902 flow. Second operand 24 states and 1630 transitions. [2022-11-21 09:04:35,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 240 transitions, 2719 flow [2022-11-21 09:04:35,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 240 transitions, 2301 flow, removed 183 selfloop flow, removed 21 redundant places. [2022-11-21 09:04:35,396 INFO L231 Difference]: Finished difference. Result has 171 places, 132 transitions, 953 flow [2022-11-21 09:04:35,396 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=953, PETRI_PLACES=171, PETRI_TRANSITIONS=132} [2022-11-21 09:04:35,398 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 69 predicate places. [2022-11-21 09:04:35,398 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 132 transitions, 953 flow [2022-11-21 09:04:35,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 63.64705882352941) internal successors, (1082), 17 states have internal predecessors, (1082), 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) [2022-11-21 09:04:35,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:35,400 INFO L209 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] [2022-11-21 09:04:35,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 09:04:35,400 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:35,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:35,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1368281905, now seen corresponding path program 1 times [2022-11-21 09:04:35,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:35,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879016741] [2022-11-21 09:04:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:35,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:36,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:36,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879016741] [2022-11-21 09:04:36,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879016741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:36,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:36,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 09:04:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697567852] [2022-11-21 09:04:36,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 09:04:36,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:36,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 09:04:36,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 09:04:36,155 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-11-21 09:04:36,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 132 transitions, 953 flow. Second operand has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2022-11-21 09:04:36,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:36,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-11-21 09:04:36,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:36,585 INFO L130 PetriNetUnfolder]: 80/379 cut-off events. [2022-11-21 09:04:36,586 INFO L131 PetriNetUnfolder]: For 3584/4825 co-relation queries the response was YES. [2022-11-21 09:04:36,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 379 events. 80/379 cut-off events. For 3584/4825 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1800 event pairs, 17 based on Foata normal form. 57/419 useless extension candidates. Maximal degree in co-relation 1775. Up to 87 conditions per place. [2022-11-21 09:04:36,590 INFO L137 encePairwiseOnDemand]: 88/99 looper letters, 31 selfloop transitions, 12 changer transitions 40/150 dead transitions. [2022-11-21 09:04:36,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 150 transitions, 1367 flow [2022-11-21 09:04:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 09:04:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-21 09:04:36,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 701 transitions. [2022-11-21 09:04:36,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7867564534231201 [2022-11-21 09:04:36,593 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 701 transitions. [2022-11-21 09:04:36,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 701 transitions. [2022-11-21 09:04:36,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:36,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 701 transitions. [2022-11-21 09:04:36,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.88888888888889) internal successors, (701), 9 states have internal predecessors, (701), 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) [2022-11-21 09:04:36,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 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) [2022-11-21 09:04:36,597 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 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) [2022-11-21 09:04:36,598 INFO L175 Difference]: Start difference. First operand has 171 places, 132 transitions, 953 flow. Second operand 9 states and 701 transitions. [2022-11-21 09:04:36,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 150 transitions, 1367 flow [2022-11-21 09:04:36,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 150 transitions, 1271 flow, removed 25 selfloop flow, removed 16 redundant places. [2022-11-21 09:04:36,613 INFO L231 Difference]: Finished difference. Result has 159 places, 109 transitions, 661 flow [2022-11-21 09:04:36,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=661, PETRI_PLACES=159, PETRI_TRANSITIONS=109} [2022-11-21 09:04:36,614 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 57 predicate places. [2022-11-21 09:04:36,614 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 109 transitions, 661 flow [2022-11-21 09:04:36,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.0) internal successors, (750), 10 states have internal predecessors, (750), 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) [2022-11-21 09:04:36,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:36,615 INFO L209 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] [2022-11-21 09:04:36,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 09:04:36,616 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:36,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:36,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1093853037, now seen corresponding path program 2 times [2022-11-21 09:04:36,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:36,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979107086] [2022-11-21 09:04:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:36,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:38,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:38,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979107086] [2022-11-21 09:04:38,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979107086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:38,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:38,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-21 09:04:38,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762932090] [2022-11-21 09:04:38,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:38,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-21 09:04:38,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:38,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-21 09:04:38,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-21 09:04:38,098 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 99 [2022-11-21 09:04:38,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 109 transitions, 661 flow. Second operand has 16 states, 16 states have (on average 69.5625) internal successors, (1113), 16 states have internal predecessors, (1113), 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) [2022-11-21 09:04:38,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:38,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 99 [2022-11-21 09:04:38,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:38,605 INFO L130 PetriNetUnfolder]: 58/287 cut-off events. [2022-11-21 09:04:38,606 INFO L131 PetriNetUnfolder]: For 2386/2963 co-relation queries the response was YES. [2022-11-21 09:04:38,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 287 events. 58/287 cut-off events. For 2386/2963 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1111 event pairs, 16 based on Foata normal form. 44/318 useless extension candidates. Maximal degree in co-relation 1239. Up to 80 conditions per place. [2022-11-21 09:04:38,609 INFO L137 encePairwiseOnDemand]: 83/99 looper letters, 34 selfloop transitions, 17 changer transitions 16/128 dead transitions. [2022-11-21 09:04:38,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 128 transitions, 1045 flow [2022-11-21 09:04:38,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 09:04:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-21 09:04:38,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1004 transitions. [2022-11-21 09:04:38,612 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7243867243867244 [2022-11-21 09:04:38,612 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1004 transitions. [2022-11-21 09:04:38,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1004 transitions. [2022-11-21 09:04:38,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:38,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1004 transitions. [2022-11-21 09:04:38,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 71.71428571428571) internal successors, (1004), 14 states have internal predecessors, (1004), 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) [2022-11-21 09:04:38,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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) [2022-11-21 09:04:38,619 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 99.0) internal successors, (1485), 15 states have internal predecessors, (1485), 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) [2022-11-21 09:04:38,619 INFO L175 Difference]: Start difference. First operand has 159 places, 109 transitions, 661 flow. Second operand 14 states and 1004 transitions. [2022-11-21 09:04:38,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 128 transitions, 1045 flow [2022-11-21 09:04:38,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 128 transitions, 953 flow, removed 21 selfloop flow, removed 15 redundant places. [2022-11-21 09:04:38,630 INFO L231 Difference]: Finished difference. Result has 153 places, 110 transitions, 647 flow [2022-11-21 09:04:38,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=582, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=647, PETRI_PLACES=153, PETRI_TRANSITIONS=110} [2022-11-21 09:04:38,632 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 51 predicate places. [2022-11-21 09:04:38,632 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 110 transitions, 647 flow [2022-11-21 09:04:38,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 69.5625) internal successors, (1113), 16 states have internal predecessors, (1113), 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) [2022-11-21 09:04:38,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 09:04:38,633 INFO L209 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] [2022-11-21 09:04:38,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 09:04:38,633 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-11-21 09:04:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 09:04:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1767860631, now seen corresponding path program 3 times [2022-11-21 09:04:38,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 09:04:38,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976763411] [2022-11-21 09:04:38,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 09:04:38,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 09:04:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 09:04:40,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 09:04:40,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 09:04:40,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976763411] [2022-11-21 09:04:40,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976763411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 09:04:40,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 09:04:40,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-21 09:04:40,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565228442] [2022-11-21 09:04:40,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 09:04:40,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 09:04:40,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 09:04:40,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 09:04:40,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-21 09:04:40,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 99 [2022-11-21 09:04:40,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 110 transitions, 647 flow. Second operand has 14 states, 14 states have (on average 67.92857142857143) internal successors, (951), 14 states have internal predecessors, (951), 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) [2022-11-21 09:04:40,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 09:04:40,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 99 [2022-11-21 09:04:40,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 09:04:41,345 INFO L130 PetriNetUnfolder]: 38/211 cut-off events. [2022-11-21 09:04:41,345 INFO L131 PetriNetUnfolder]: For 1578/2388 co-relation queries the response was YES. [2022-11-21 09:04:41,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 940 conditions, 211 events. 38/211 cut-off events. For 1578/2388 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 649 event pairs, 12 based on Foata normal form. 26/222 useless extension candidates. Maximal degree in co-relation 908. Up to 39 conditions per place. [2022-11-21 09:04:41,347 INFO L137 encePairwiseOnDemand]: 88/99 looper letters, 0 selfloop transitions, 0 changer transitions 120/120 dead transitions. [2022-11-21 09:04:41,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 120 transitions, 951 flow [2022-11-21 09:04:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 09:04:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 09:04:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 836 transitions. [2022-11-21 09:04:41,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-11-21 09:04:41,351 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 836 transitions. [2022-11-21 09:04:41,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 836 transitions. [2022-11-21 09:04:41,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 09:04:41,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 836 transitions. [2022-11-21 09:04:41,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 69.66666666666667) internal successors, (836), 12 states have internal predecessors, (836), 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) [2022-11-21 09:04:41,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:41,356 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 99.0) internal successors, (1287), 13 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 09:04:41,356 INFO L175 Difference]: Start difference. First operand has 153 places, 110 transitions, 647 flow. Second operand 12 states and 836 transitions. [2022-11-21 09:04:41,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 120 transitions, 951 flow [2022-11-21 09:04:41,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 120 transitions, 876 flow, removed 21 selfloop flow, removed 13 redundant places. [2022-11-21 09:04:41,364 INFO L231 Difference]: Finished difference. Result has 145 places, 0 transitions, 0 flow [2022-11-21 09:04:41,364 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=99, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=145, PETRI_TRANSITIONS=0} [2022-11-21 09:04:41,365 INFO L288 CegarLoopForPetriNet]: 102 programPoint places, 43 predicate places. [2022-11-21 09:04:41,365 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 0 transitions, 0 flow [2022-11-21 09:04:41,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 67.92857142857143) internal successors, (951), 14 states have internal predecessors, (951), 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) [2022-11-21 09:04:41,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-11-21 09:04:41,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2022-11-21 09:04:41,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-11-21 09:04:41,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-11-21 09:04:41,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-11-21 09:04:41,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 09:04:41,370 INFO L444 BasicCegarLoop]: Path program histogram: [6, 4, 3, 1, 1, 1] [2022-11-21 09:04:41,376 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-21 09:04:41,376 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 09:04:41,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:04:41 BasicIcfg [2022-11-21 09:04:41,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 09:04:41,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 09:04:41,382 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 09:04:41,383 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 09:04:41,383 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:04:06" (3/4) ... [2022-11-21 09:04:41,386 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 09:04:41,392 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2022-11-21 09:04:41,392 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2022-11-21 09:04:41,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2022-11-21 09:04:41,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-21 09:04:41,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-21 09:04:41,397 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 09:04:41,434 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 09:04:41,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 09:04:41,435 INFO L158 Benchmark]: Toolchain (without parser) took 37039.76ms. Allocated memory was 167.8MB in the beginning and 545.3MB in the end (delta: 377.5MB). Free memory was 119.7MB in the beginning and 282.5MB in the end (delta: -162.8MB). Peak memory consumption was 216.0MB. Max. memory is 16.1GB. [2022-11-21 09:04:41,436 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 09:04:41,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 703.48ms. Allocated memory is still 167.8MB. Free memory was 119.4MB in the beginning and 94.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-21 09:04:41,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.59ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 91.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-21 09:04:41,437 INFO L158 Benchmark]: Boogie Preprocessor took 32.84ms. Allocated memory is still 167.8MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:04:41,437 INFO L158 Benchmark]: RCFGBuilder took 1213.47ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 88.9MB in the beginning and 148.8MB in the end (delta: -59.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2022-11-21 09:04:41,438 INFO L158 Benchmark]: TraceAbstraction took 34958.22ms. Allocated memory was 218.1MB in the beginning and 545.3MB in the end (delta: 327.2MB). Free memory was 148.8MB in the beginning and 285.6MB in the end (delta: -136.8MB). Peak memory consumption was 190.3MB. Max. memory is 16.1GB. [2022-11-21 09:04:41,438 INFO L158 Benchmark]: Witness Printer took 52.58ms. Allocated memory is still 545.3MB. Free memory was 285.6MB in the beginning and 282.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 09:04:41,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 109.1MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 703.48ms. Allocated memory is still 167.8MB. Free memory was 119.4MB in the beginning and 94.2MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.59ms. Allocated memory is still 167.8MB. Free memory was 94.2MB in the beginning and 91.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.84ms. Allocated memory is still 167.8MB. Free memory was 91.0MB in the beginning and 88.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1213.47ms. Allocated memory was 167.8MB in the beginning and 218.1MB in the end (delta: 50.3MB). Free memory was 88.9MB in the beginning and 148.8MB in the end (delta: -59.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * TraceAbstraction took 34958.22ms. Allocated memory was 218.1MB in the beginning and 545.3MB in the end (delta: 327.2MB). Free memory was 148.8MB in the beginning and 285.6MB in the end (delta: -136.8MB). Peak memory consumption was 190.3MB. Max. memory is 16.1GB. * Witness Printer took 52.58ms. Allocated memory is still 545.3MB. Free memory was 285.6MB in the beginning and 282.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 34.8s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1011 SdHoareTripleChecker+Valid, 6.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1011 mSDsluCounter, 1497 SdHoareTripleChecker+Invalid, 5.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1260 mSDsCounter, 376 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3482 IncrementalHoareTripleChecker+Invalid, 3858 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 376 mSolverCounterUnsat, 237 mSDtfsCounter, 3482 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 304 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1217occurred in iteration=11, InterpolantAutomatonStates: 217, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 20.2s InterpolantComputationTime, 1145 NumberOfCodeBlocks, 1145 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1129 ConstructedInterpolants, 0 QuantifiedInterpolants, 9947 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-21 09:04:41,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4ebbab39-5c3e-4773-ae78-506c330236de/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE