./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro --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 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- 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-8393723 [2022-11-18 21:05:38,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:05:38,346 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:05:38,374 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:05:38,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:05:38,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:05:38,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:05:38,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:05:38,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:05:38,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:05:38,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:05:38,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:05:38,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:05:38,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:05:38,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:05:38,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:05:38,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:05:38,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:05:38,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:05:38,432 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:05:38,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:05:38,435 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:05:38,437 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:05:38,438 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:05:38,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:05:38,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:05:38,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:05:38,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:05:38,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:05:38,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:05:38,447 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:05:38,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:05:38,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:05:38,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:05:38,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:05:38,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:05:38,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:05:38,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:05:38,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:05:38,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:05:38,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:05:38,456 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:05:38,483 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:05:38,483 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:05:38,484 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:05:38,484 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:05:38,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:05:38,485 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:05:38,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:05:38,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:05:38,487 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:05:38,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:05:38,487 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:05:38,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:05:38,488 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:05:38,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:05:38,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:05:38,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:05:38,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:05:38,489 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:05:38,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:05:38,490 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:05:38,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:05:38,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:05:38,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:05:38,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:05:38,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:05:38,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:05:38,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:05:38,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:05:38,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:05:38,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:05:38,493 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:05:38,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:05:38,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:05:38,494 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_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2022-11-18 21:05:38,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:05:38,787 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:05:38,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:05:38,791 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:05:38,792 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:05:38,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-11-18 21:05:38,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/data/39dbf71ff/6de1615ee6d846cfa02305249665dd45/FLAG0f957f97e [2022-11-18 21:05:39,344 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:05:39,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-11-18 21:05:39,361 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/data/39dbf71ff/6de1615ee6d846cfa02305249665dd45/FLAG0f957f97e [2022-11-18 21:05:39,727 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/data/39dbf71ff/6de1615ee6d846cfa02305249665dd45 [2022-11-18 21:05:39,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:05:39,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:05:39,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:05:39,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:05:39,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:05:39,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:05:39" (1/1) ... [2022-11-18 21:05:39,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ceccb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:39, skipping insertion in model container [2022-11-18 21:05:39,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:05:39" (1/1) ... [2022-11-18 21:05:39,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:05:39,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:05:39,956 WARN L234 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_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-11-18 21:05:39,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:05:39,971 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:05:39,993 WARN L234 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_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-11-18 21:05:39,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:05:40,009 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:05:40,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40 WrapperNode [2022-11-18 21:05:40,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:05:40,011 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:05:40,011 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:05:40,012 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:05:40,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,060 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 193 [2022-11-18 21:05:40,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:05:40,062 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:05:40,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:05:40,062 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:05:40,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,084 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,086 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:05:40,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:05:40,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:05:40,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:05:40,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (1/1) ... [2022-11-18 21:05:40,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:05:40,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:40,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:05:40,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f236c36-d2df-47ff-b5c7-bdeabc69d66d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:05:40,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:05:40,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 21:05:40,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 21:05:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 21:05:40,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 21:05:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 21:05:40,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 21:05:40,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:05:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 21:05:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 21:05:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:05:40,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:05:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 21:05:40,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 21:05:40,191 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 21:05:40,313 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:05:40,315 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:05:40,864 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:05:40,876 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:05:40,876 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 21:05:40,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:05:40 BoogieIcfgContainer [2022-11-18 21:05:40,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:05:40,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:05:40,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:05:40,886 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:05:40,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:05:39" (1/3) ... [2022-11-18 21:05:40,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7397d6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:05:40, skipping insertion in model container [2022-11-18 21:05:40,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:05:40" (2/3) ... [2022-11-18 21:05:40,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7397d6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:05:40, skipping insertion in model container [2022-11-18 21:05:40,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:05:40" (3/3) ... [2022-11-18 21:05:40,890 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2022-11-18 21:05:40,901 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 21:05:40,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:05:40,914 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:05:40,914 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 21:05:41,173 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 21:05:41,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 248 transitions, 520 flow [2022-11-18 21:05:41,390 INFO L130 PetriNetUnfolder]: 19/245 cut-off events. [2022-11-18 21:05:41,391 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:05:41,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 245 events. 19/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 560 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-11-18 21:05:41,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 248 transitions, 520 flow [2022-11-18 21:05:41,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 234 transitions, 486 flow [2022-11-18 21:05:41,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:05:41,433 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;@27eccf00, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:05:41,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 21:05:41,502 INFO L130 PetriNetUnfolder]: 19/233 cut-off events. [2022-11-18 21:05:41,502 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 21:05:41,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:41,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:41,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:41,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:41,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1983215944, now seen corresponding path program 1 times [2022-11-18 21:05:41,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:41,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385804625] [2022-11-18 21:05:41,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:41,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:42,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:42,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:42,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385804625] [2022-11-18 21:05:42,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385804625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:42,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:42,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:42,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849920251] [2022-11-18 21:05:42,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:42,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:42,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:42,555 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 248 [2022-11-18 21:05:42,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 234 transitions, 486 flow. Second operand has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:42,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:42,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 248 [2022-11-18 21:05:42,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:43,341 INFO L130 PetriNetUnfolder]: 164/1630 cut-off events. [2022-11-18 21:05:43,342 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-18 21:05:43,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 1630 events. 164/1630 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 14368 event pairs, 21 based on Foata normal form. 85/1533 useless extension candidates. Maximal degree in co-relation 1728. Up to 43 conditions per place. [2022-11-18 21:05:43,368 INFO L137 encePairwiseOnDemand]: 227/248 looper letters, 49 selfloop transitions, 18 changer transitions 11/283 dead transitions. [2022-11-18 21:05:43,368 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 283 transitions, 803 flow [2022-11-18 21:05:43,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 21:05:43,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 21:05:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2943 transitions. [2022-11-18 21:05:43,400 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9128411910669976 [2022-11-18 21:05:43,401 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2943 transitions. [2022-11-18 21:05:43,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2943 transitions. [2022-11-18 21:05:43,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:43,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2943 transitions. [2022-11-18 21:05:43,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 226.3846153846154) internal successors, (2943), 13 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:43,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 248.0) internal successors, (3472), 14 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:43,441 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 248.0) internal successors, (3472), 14 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:43,443 INFO L175 Difference]: Start difference. First operand has 225 places, 234 transitions, 486 flow. Second operand 13 states and 2943 transitions. [2022-11-18 21:05:43,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 283 transitions, 803 flow [2022-11-18 21:05:43,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 283 transitions, 749 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 21:05:43,462 INFO L231 Difference]: Finished difference. Result has 238 places, 241 transitions, 577 flow [2022-11-18 21:05:43,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=577, PETRI_PLACES=238, PETRI_TRANSITIONS=241} [2022-11-18 21:05:43,471 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 13 predicate places. [2022-11-18 21:05:43,471 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 241 transitions, 577 flow [2022-11-18 21:05:43,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:43,473 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:43,473 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:43,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:05:43,474 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:43,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:43,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1537653204, now seen corresponding path program 2 times [2022-11-18 21:05:43,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:43,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336074818] [2022-11-18 21:05:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:43,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:43,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:43,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336074818] [2022-11-18 21:05:43,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336074818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:43,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:43,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:43,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738890214] [2022-11-18 21:05:43,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:43,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:43,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:43,846 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 248 [2022-11-18 21:05:43,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 241 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:43,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:43,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 248 [2022-11-18 21:05:43,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:44,355 INFO L130 PetriNetUnfolder]: 149/1458 cut-off events. [2022-11-18 21:05:44,355 INFO L131 PetriNetUnfolder]: For 179/185 co-relation queries the response was YES. [2022-11-18 21:05:44,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 1458 events. 149/1458 cut-off events. For 179/185 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 12460 event pairs, 31 based on Foata normal form. 1/1322 useless extension candidates. Maximal degree in co-relation 1913. Up to 93 conditions per place. [2022-11-18 21:05:44,377 INFO L137 encePairwiseOnDemand]: 240/248 looper letters, 40 selfloop transitions, 12 changer transitions 4/261 dead transitions. [2022-11-18 21:05:44,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 261 transitions, 767 flow [2022-11-18 21:05:44,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:05:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2008 transitions. [2022-11-18 21:05:44,382 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.899641577060932 [2022-11-18 21:05:44,383 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2008 transitions. [2022-11-18 21:05:44,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2008 transitions. [2022-11-18 21:05:44,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:44,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2008 transitions. [2022-11-18 21:05:44,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 223.11111111111111) internal successors, (2008), 9 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:44,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:44,395 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:44,396 INFO L175 Difference]: Start difference. First operand has 238 places, 241 transitions, 577 flow. Second operand 9 states and 2008 transitions. [2022-11-18 21:05:44,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 261 transitions, 767 flow [2022-11-18 21:05:44,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 261 transitions, 761 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:44,427 INFO L231 Difference]: Finished difference. Result has 242 places, 246 transitions, 650 flow [2022-11-18 21:05:44,428 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=650, PETRI_PLACES=242, PETRI_TRANSITIONS=246} [2022-11-18 21:05:44,428 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 17 predicate places. [2022-11-18 21:05:44,429 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 246 transitions, 650 flow [2022-11-18 21:05:44,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:44,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:44,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:44,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:05:44,431 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:44,432 INFO L85 PathProgramCache]: Analyzing trace with hash 489608282, now seen corresponding path program 3 times [2022-11-18 21:05:44,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:44,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236969821] [2022-11-18 21:05:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:44,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:44,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:44,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:44,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:44,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236969821] [2022-11-18 21:05:44,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236969821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:44,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:44,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:05:44,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448972316] [2022-11-18 21:05:44,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:05:44,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:44,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:05:44,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:05:44,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 248 [2022-11-18 21:05:44,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 246 transitions, 650 flow. Second operand has 8 states, 8 states have (on average 216.625) internal successors, (1733), 8 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:44,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:44,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 248 [2022-11-18 21:05:44,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:45,399 INFO L130 PetriNetUnfolder]: 436/2980 cut-off events. [2022-11-18 21:05:45,399 INFO L131 PetriNetUnfolder]: For 764/771 co-relation queries the response was YES. [2022-11-18 21:05:45,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 2980 events. 436/2980 cut-off events. For 764/771 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30167 event pairs, 124 based on Foata normal form. 21/2733 useless extension candidates. Maximal degree in co-relation 4307. Up to 179 conditions per place. [2022-11-18 21:05:45,441 INFO L137 encePairwiseOnDemand]: 236/248 looper letters, 60 selfloop transitions, 16 changer transitions 7/284 dead transitions. [2022-11-18 21:05:45,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 284 transitions, 970 flow [2022-11-18 21:05:45,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:45,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:05:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1994 transitions. [2022-11-18 21:05:45,448 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8933691756272402 [2022-11-18 21:05:45,449 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1994 transitions. [2022-11-18 21:05:45,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1994 transitions. [2022-11-18 21:05:45,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:45,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1994 transitions. [2022-11-18 21:05:45,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 221.55555555555554) internal successors, (1994), 9 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:45,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:45,464 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:45,464 INFO L175 Difference]: Start difference. First operand has 242 places, 246 transitions, 650 flow. Second operand 9 states and 1994 transitions. [2022-11-18 21:05:45,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 284 transitions, 970 flow [2022-11-18 21:05:45,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 284 transitions, 956 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:45,480 INFO L231 Difference]: Finished difference. Result has 253 places, 251 transitions, 763 flow [2022-11-18 21:05:45,480 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=763, PETRI_PLACES=253, PETRI_TRANSITIONS=251} [2022-11-18 21:05:45,481 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 28 predicate places. [2022-11-18 21:05:45,481 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 251 transitions, 763 flow [2022-11-18 21:05:45,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.625) internal successors, (1733), 8 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:45,483 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:45,483 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:45,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:05:45,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:45,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:45,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1258656304, now seen corresponding path program 1 times [2022-11-18 21:05:45,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:45,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248344962] [2022-11-18 21:05:45,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:45,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:45,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:45,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:45,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248344962] [2022-11-18 21:05:45,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248344962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:45,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:45,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:45,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718210772] [2022-11-18 21:05:45,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:45,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:45,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:45,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:45,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:45,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 248 [2022-11-18 21:05:45,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 251 transitions, 763 flow. Second operand has 7 states, 7 states have (on average 219.85714285714286) internal successors, (1539), 7 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:45,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:45,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 248 [2022-11-18 21:05:45,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:46,753 INFO L130 PetriNetUnfolder]: 685/3680 cut-off events. [2022-11-18 21:05:46,754 INFO L131 PetriNetUnfolder]: For 3473/4027 co-relation queries the response was YES. [2022-11-18 21:05:46,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6559 conditions, 3680 events. 685/3680 cut-off events. For 3473/4027 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 39850 event pairs, 151 based on Foata normal form. 110/3629 useless extension candidates. Maximal degree in co-relation 6521. Up to 751 conditions per place. [2022-11-18 21:05:46,809 INFO L137 encePairwiseOnDemand]: 237/248 looper letters, 52 selfloop transitions, 29 changer transitions 4/308 dead transitions. [2022-11-18 21:05:46,809 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 308 transitions, 1306 flow [2022-11-18 21:05:46,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:46,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:05:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2015 transitions. [2022-11-18 21:05:46,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2022-11-18 21:05:46,814 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2015 transitions. [2022-11-18 21:05:46,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2015 transitions. [2022-11-18 21:05:46,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:46,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2015 transitions. [2022-11-18 21:05:46,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 223.88888888888889) internal successors, (2015), 9 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:46,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:46,829 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:46,829 INFO L175 Difference]: Start difference. First operand has 253 places, 251 transitions, 763 flow. Second operand 9 states and 2015 transitions. [2022-11-18 21:05:46,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 308 transitions, 1306 flow [2022-11-18 21:05:46,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 308 transitions, 1264 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-18 21:05:46,846 INFO L231 Difference]: Finished difference. Result has 262 places, 278 transitions, 1097 flow [2022-11-18 21:05:46,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1097, PETRI_PLACES=262, PETRI_TRANSITIONS=278} [2022-11-18 21:05:46,849 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 37 predicate places. [2022-11-18 21:05:46,849 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 278 transitions, 1097 flow [2022-11-18 21:05:46,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.85714285714286) internal successors, (1539), 7 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:46,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:46,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:46,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:05:46,855 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:46,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:46,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1370511180, now seen corresponding path program 2 times [2022-11-18 21:05:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:46,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301032403] [2022-11-18 21:05:46,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:47,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:47,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301032403] [2022-11-18 21:05:47,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301032403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:47,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:47,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:47,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192564949] [2022-11-18 21:05:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:47,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:47,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:47,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:47,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:47,094 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 248 [2022-11-18 21:05:47,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 278 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 223.28571428571428) internal successors, (1563), 7 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:47,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:47,097 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 248 [2022-11-18 21:05:47,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:47,535 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L50-21-->L50-22: Formula: (= |v_thread2Thread1of1ForFork2_#t~ite10#1_3| v_~result_10~0_1) InVars {thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|, ~result_10~0=v_~result_10~0_1} AuxVars[] AssignedVars[~result_10~0][128], [Black: 303#(<= ~result_9~0 0), Black: 311#(and (<= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), 161#L50-22true, Black: 250#(and (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 245#(or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0)), 353#true, Black: 246#(<= ~result_9~0 0), 277#true, Black: 252#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 258#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 181#L44-22true, 242#true, Black: 329#(or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)), Black: 337#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 335#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 344#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 327#(<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0), 92#L77-4true, Black: 333#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0)), Black: 342#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 132#L56-22true, Black: 285#(and (or (and (= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))) (and (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 1))) (<= ~result_9~0 0)), 325#true, 301#(not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256)))), Black: 308#(and (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), Black: 299#true]) [2022-11-18 21:05:47,535 INFO L383 tUnfolder$Statistics]: this new event has 79 ancestors and is cut-off event [2022-11-18 21:05:47,535 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-11-18 21:05:47,535 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-18 21:05:47,536 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-18 21:05:47,938 INFO L130 PetriNetUnfolder]: 430/2721 cut-off events. [2022-11-18 21:05:47,939 INFO L131 PetriNetUnfolder]: For 3876/4283 co-relation queries the response was YES. [2022-11-18 21:05:47,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5657 conditions, 2721 events. 430/2721 cut-off events. For 3876/4283 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 28776 event pairs, 136 based on Foata normal form. 102/2695 useless extension candidates. Maximal degree in co-relation 5614. Up to 399 conditions per place. [2022-11-18 21:05:47,986 INFO L137 encePairwiseOnDemand]: 240/248 looper letters, 29 selfloop transitions, 10 changer transitions 4/294 dead transitions. [2022-11-18 21:05:47,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 294 transitions, 1239 flow [2022-11-18 21:05:47,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:47,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:05:47,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2027 transitions. [2022-11-18 21:05:47,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081541218637993 [2022-11-18 21:05:47,991 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2027 transitions. [2022-11-18 21:05:47,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2027 transitions. [2022-11-18 21:05:47,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:47,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2027 transitions. [2022-11-18 21:05:47,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 225.22222222222223) internal successors, (2027), 9 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:48,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:48,005 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:48,005 INFO L175 Difference]: Start difference. First operand has 262 places, 278 transitions, 1097 flow. Second operand 9 states and 2027 transitions. [2022-11-18 21:05:48,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 294 transitions, 1239 flow [2022-11-18 21:05:48,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 294 transitions, 1233 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:48,032 INFO L231 Difference]: Finished difference. Result has 270 places, 279 transitions, 1133 flow [2022-11-18 21:05:48,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1133, PETRI_PLACES=270, PETRI_TRANSITIONS=279} [2022-11-18 21:05:48,036 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 45 predicate places. [2022-11-18 21:05:48,037 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 279 transitions, 1133 flow [2022-11-18 21:05:48,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 223.28571428571428) internal successors, (1563), 7 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:48,039 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:48,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:48,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:05:48,040 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:48,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:48,042 INFO L85 PathProgramCache]: Analyzing trace with hash -410799852, now seen corresponding path program 1 times [2022-11-18 21:05:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:48,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167880555] [2022-11-18 21:05:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:48,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:48,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:48,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167880555] [2022-11-18 21:05:48,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167880555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:48,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:48,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:05:48,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841735112] [2022-11-18 21:05:48,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:48,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:48,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:48,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:48,123 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 248 [2022-11-18 21:05:48,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 279 transitions, 1133 flow. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:48,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:48,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 248 [2022-11-18 21:05:48,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:48,638 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L50-21-->L50-22: Formula: (= |v_thread2Thread1of1ForFork2_#t~ite10#1_3| v_~result_10~0_1) InVars {thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|, ~result_10~0=v_~result_10~0_1} AuxVars[] AssignedVars[~result_10~0][125], [Black: 303#(<= ~result_9~0 0), Black: 311#(and (<= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), 161#L50-22true, Black: 250#(and (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 245#(or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0)), 353#true, Black: 246#(<= ~result_9~0 0), Black: 252#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 277#true, Black: 258#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 181#L44-22true, 242#true, Black: 329#(or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)), Black: 337#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 335#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 327#(<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0), 92#L77-4true, Black: 333#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0)), 132#L56-22true, Black: 285#(and (or (and (= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))) (and (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 1))) (<= ~result_9~0 0)), 325#true, Black: 361#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 370#(and (<= (+ ~result_10~0 1) 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 372#(and (<= (+ ~result_10~0 1) 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 301#(not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256)))), Black: 357#(<= (+ ~result_10~0 1) 0), 380#(not (= (* (div ~isNull_0~0 256) 256) ~isNull_0~0)), Black: 308#(and (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), Black: 299#true]) [2022-11-18 21:05:48,638 INFO L383 tUnfolder$Statistics]: this new event has 79 ancestors and is cut-off event [2022-11-18 21:05:48,639 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-11-18 21:05:48,639 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-18 21:05:48,639 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-18 21:05:48,713 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L50-21-->L50-22: Formula: (= |v_thread2Thread1of1ForFork2_#t~ite10#1_3| v_~result_10~0_1) InVars {thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|, ~result_10~0=v_~result_10~0_1} AuxVars[] AssignedVars[~result_10~0][125], [Black: 303#(<= ~result_9~0 0), Black: 311#(and (<= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), 161#L50-22true, Black: 250#(and (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 245#(or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0)), 353#true, Black: 246#(<= ~result_9~0 0), Black: 252#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 277#true, Black: 258#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 181#L44-22true, 242#true, Black: 329#(or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)), Black: 337#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 335#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 327#(<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0), 92#L77-4true, Black: 333#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0)), 132#L56-22true, 378#true, Black: 285#(and (or (and (= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))) (and (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 1))) (<= ~result_9~0 0)), 325#true, Black: 361#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 370#(and (<= (+ ~result_10~0 1) 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 372#(and (<= (+ ~result_10~0 1) 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 301#(not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256)))), Black: 357#(<= (+ ~result_10~0 1) 0), Black: 308#(and (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), Black: 299#true]) [2022-11-18 21:05:48,713 INFO L383 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2022-11-18 21:05:48,714 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-18 21:05:48,714 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-18 21:05:48,714 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-18 21:05:49,410 INFO L130 PetriNetUnfolder]: 574/5515 cut-off events. [2022-11-18 21:05:49,411 INFO L131 PetriNetUnfolder]: For 5699/6200 co-relation queries the response was YES. [2022-11-18 21:05:49,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9560 conditions, 5515 events. 574/5515 cut-off events. For 5699/6200 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 64920 event pairs, 88 based on Foata normal form. 110/5181 useless extension candidates. Maximal degree in co-relation 9502. Up to 427 conditions per place. [2022-11-18 21:05:49,489 INFO L137 encePairwiseOnDemand]: 244/248 looper letters, 17 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2022-11-18 21:05:49,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 286 transitions, 1190 flow [2022-11-18 21:05:49,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:49,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:05:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-11-18 21:05:49,493 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9475806451612904 [2022-11-18 21:05:49,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-11-18 21:05:49,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-11-18 21:05:49,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:49,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-11-18 21:05:49,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:49,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:49,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:49,499 INFO L175 Difference]: Start difference. First operand has 270 places, 279 transitions, 1133 flow. Second operand 3 states and 705 transitions. [2022-11-18 21:05:49,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 286 transitions, 1190 flow [2022-11-18 21:05:49,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 286 transitions, 1184 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-18 21:05:49,539 INFO L231 Difference]: Finished difference. Result has 269 places, 281 transitions, 1147 flow [2022-11-18 21:05:49,540 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1147, PETRI_PLACES=269, PETRI_TRANSITIONS=281} [2022-11-18 21:05:49,542 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 44 predicate places. [2022-11-18 21:05:49,545 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 281 transitions, 1147 flow [2022-11-18 21:05:49,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:49,545 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:49,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:49,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:05:49,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:49,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:49,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1543982006, now seen corresponding path program 2 times [2022-11-18 21:05:49,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:49,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893427607] [2022-11-18 21:05:49,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:49,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:49,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:49,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893427607] [2022-11-18 21:05:49,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893427607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:49,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:49,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:05:49,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901272379] [2022-11-18 21:05:49,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:49,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:05:49,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:49,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:05:49,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:05:49,629 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 248 [2022-11-18 21:05:49,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 281 transitions, 1147 flow. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:49,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:49,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 248 [2022-11-18 21:05:49,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:50,094 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L50-21-->L50-22: Formula: (= |v_thread2Thread1of1ForFork2_#t~ite10#1_3| v_~result_10~0_1) InVars {thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|, ~result_10~0=v_~result_10~0_1} AuxVars[] AssignedVars[~result_10~0][125], [Black: 303#(<= ~result_9~0 0), Black: 311#(and (<= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), 161#L50-22true, Black: 250#(and (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 245#(or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0)), Black: 246#(<= ~result_9~0 0), 277#true, Black: 252#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 258#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 181#L44-22true, 242#true, Black: 329#(or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)), Black: 337#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 335#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), 92#L77-4true, Black: 327#(<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0), Black: 333#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0)), 378#true, 132#L56-22true, Black: 285#(and (or (and (= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))) (and (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 1))) (<= ~result_9~0 0)), 325#true, 386#(= (* (div ~isNull_0~0 256) 256) ~isNull_0~0), Black: 361#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), 301#(not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256)))), Black: 357#(<= (+ ~result_10~0 1) 0), Black: 308#(and (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), Black: 380#(not (= (* (div ~isNull_0~0 256) 256) ~isNull_0~0)), Black: 299#true]) [2022-11-18 21:05:50,094 INFO L383 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2022-11-18 21:05:50,094 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-18 21:05:50,095 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-18 21:05:50,095 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-18 21:05:50,599 INFO L130 PetriNetUnfolder]: 411/4539 cut-off events. [2022-11-18 21:05:50,599 INFO L131 PetriNetUnfolder]: For 4099/4475 co-relation queries the response was YES. [2022-11-18 21:05:50,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7592 conditions, 4539 events. 411/4539 cut-off events. For 4099/4475 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 50978 event pairs, 80 based on Foata normal form. 100/4313 useless extension candidates. Maximal degree in co-relation 6472. Up to 305 conditions per place. [2022-11-18 21:05:50,658 INFO L137 encePairwiseOnDemand]: 242/248 looper letters, 17 selfloop transitions, 4 changer transitions 0/288 dead transitions. [2022-11-18 21:05:50,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 288 transitions, 1212 flow [2022-11-18 21:05:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:05:50,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:05:50,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-11-18 21:05:50,661 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9475806451612904 [2022-11-18 21:05:50,661 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-11-18 21:05:50,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-11-18 21:05:50,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:50,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-11-18 21:05:50,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:50,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:50,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:50,667 INFO L175 Difference]: Start difference. First operand has 269 places, 281 transitions, 1147 flow. Second operand 3 states and 705 transitions. [2022-11-18 21:05:50,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 288 transitions, 1212 flow [2022-11-18 21:05:50,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 288 transitions, 1210 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:05:50,703 INFO L231 Difference]: Finished difference. Result has 272 places, 283 transitions, 1177 flow [2022-11-18 21:05:50,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1177, PETRI_PLACES=272, PETRI_TRANSITIONS=283} [2022-11-18 21:05:50,704 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 47 predicate places. [2022-11-18 21:05:50,704 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 283 transitions, 1177 flow [2022-11-18 21:05:50,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:50,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:50,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:50,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:05:50,705 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:50,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:50,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1064738514, now seen corresponding path program 1 times [2022-11-18 21:05:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:50,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134018397] [2022-11-18 21:05:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:51,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:51,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134018397] [2022-11-18 21:05:51,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134018397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:51,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:51,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:05:51,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512153593] [2022-11-18 21:05:51,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:51,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:05:51,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:51,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:05:51,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:05:51,042 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 248 [2022-11-18 21:05:51,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 283 transitions, 1177 flow. Second operand has 8 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:51,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:51,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 248 [2022-11-18 21:05:51,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:53,033 INFO L130 PetriNetUnfolder]: 1448/8650 cut-off events. [2022-11-18 21:05:53,034 INFO L131 PetriNetUnfolder]: For 13846/14847 co-relation queries the response was YES. [2022-11-18 21:05:53,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17257 conditions, 8650 events. 1448/8650 cut-off events. For 13846/14847 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 111351 event pairs, 248 based on Foata normal form. 351/8316 useless extension candidates. Maximal degree in co-relation 15001. Up to 1663 conditions per place. [2022-11-18 21:05:53,156 INFO L137 encePairwiseOnDemand]: 238/248 looper letters, 78 selfloop transitions, 35 changer transitions 39/380 dead transitions. [2022-11-18 21:05:53,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 380 transitions, 2289 flow [2022-11-18 21:05:53,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:05:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:05:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2429 transitions. [2022-11-18 21:05:53,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8903958944281525 [2022-11-18 21:05:53,164 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2429 transitions. [2022-11-18 21:05:53,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2429 transitions. [2022-11-18 21:05:53,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:53,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2429 transitions. [2022-11-18 21:05:53,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.8181818181818) internal successors, (2429), 11 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:53,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:53,302 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:53,302 INFO L175 Difference]: Start difference. First operand has 272 places, 283 transitions, 1177 flow. Second operand 11 states and 2429 transitions. [2022-11-18 21:05:53,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 380 transitions, 2289 flow [2022-11-18 21:05:53,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 380 transitions, 2277 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:53,366 INFO L231 Difference]: Finished difference. Result has 287 places, 304 transitions, 1469 flow [2022-11-18 21:05:53,367 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1469, PETRI_PLACES=287, PETRI_TRANSITIONS=304} [2022-11-18 21:05:53,367 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 62 predicate places. [2022-11-18 21:05:53,368 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 304 transitions, 1469 flow [2022-11-18 21:05:53,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:53,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:53,369 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:53,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:05:53,370 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1765780910, now seen corresponding path program 2 times [2022-11-18 21:05:53,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:53,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654822420] [2022-11-18 21:05:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:53,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:53,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:53,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654822420] [2022-11-18 21:05:53,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654822420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:53,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:53,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:53,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380369113] [2022-11-18 21:05:53,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:53,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:53,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:53,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:53,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 248 [2022-11-18 21:05:53,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 304 transitions, 1469 flow. Second operand has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:53,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:53,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 248 [2022-11-18 21:05:53,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:56,106 INFO L130 PetriNetUnfolder]: 1975/13412 cut-off events. [2022-11-18 21:05:56,107 INFO L131 PetriNetUnfolder]: For 21700/23030 co-relation queries the response was YES. [2022-11-18 21:05:56,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25752 conditions, 13412 events. 1975/13412 cut-off events. For 21700/23030 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 186915 event pairs, 332 based on Foata normal form. 513/12872 useless extension candidates. Maximal degree in co-relation 25684. Up to 1467 conditions per place. [2022-11-18 21:05:56,282 INFO L137 encePairwiseOnDemand]: 233/248 looper letters, 90 selfloop transitions, 57 changer transitions 20/395 dead transitions. [2022-11-18 21:05:56,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 395 transitions, 2663 flow [2022-11-18 21:05:56,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:56,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:05:56,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2004 transitions. [2022-11-18 21:05:56,290 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8978494623655914 [2022-11-18 21:05:56,290 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2004 transitions. [2022-11-18 21:05:56,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2004 transitions. [2022-11-18 21:05:56,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:56,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2004 transitions. [2022-11-18 21:05:56,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.66666666666666) internal successors, (2004), 9 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:56,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:56,303 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:56,303 INFO L175 Difference]: Start difference. First operand has 287 places, 304 transitions, 1469 flow. Second operand 9 states and 2004 transitions. [2022-11-18 21:05:56,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 395 transitions, 2663 flow [2022-11-18 21:05:56,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 395 transitions, 2636 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-18 21:05:56,407 INFO L231 Difference]: Finished difference. Result has 297 places, 330 transitions, 1975 flow [2022-11-18 21:05:56,408 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1975, PETRI_PLACES=297, PETRI_TRANSITIONS=330} [2022-11-18 21:05:56,409 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 72 predicate places. [2022-11-18 21:05:56,409 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 330 transitions, 1975 flow [2022-11-18 21:05:56,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:56,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:56,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:56,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:05:56,411 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:56,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1631970568, now seen corresponding path program 3 times [2022-11-18 21:05:56,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:56,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73326921] [2022-11-18 21:05:56,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:56,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:05:56,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:56,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73326921] [2022-11-18 21:05:56,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73326921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:56,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:56,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:05:56,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809482120] [2022-11-18 21:05:56,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:56,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:05:56,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:56,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:05:56,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:05:56,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 248 [2022-11-18 21:05:56,718 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 330 transitions, 1975 flow. Second operand has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:56,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:05:56,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 248 [2022-11-18 21:05:56,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:05:59,434 INFO L130 PetriNetUnfolder]: 2322/15536 cut-off events. [2022-11-18 21:05:59,435 INFO L131 PetriNetUnfolder]: For 31760/33382 co-relation queries the response was YES. [2022-11-18 21:05:59,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31777 conditions, 15536 events. 2322/15536 cut-off events. For 31760/33382 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 222662 event pairs, 410 based on Foata normal form. 622/15046 useless extension candidates. Maximal degree in co-relation 31704. Up to 2323 conditions per place. [2022-11-18 21:05:59,618 INFO L137 encePairwiseOnDemand]: 233/248 looper letters, 97 selfloop transitions, 91 changer transitions 12/427 dead transitions. [2022-11-18 21:05:59,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 427 transitions, 3487 flow [2022-11-18 21:05:59,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:05:59,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 21:05:59,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2002 transitions. [2022-11-18 21:05:59,625 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8969534050179212 [2022-11-18 21:05:59,625 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2002 transitions. [2022-11-18 21:05:59,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2002 transitions. [2022-11-18 21:05:59,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:05:59,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2002 transitions. [2022-11-18 21:05:59,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.44444444444446) internal successors, (2002), 9 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:59,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:59,639 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:59,639 INFO L175 Difference]: Start difference. First operand has 297 places, 330 transitions, 1975 flow. Second operand 9 states and 2002 transitions. [2022-11-18 21:05:59,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 427 transitions, 3487 flow [2022-11-18 21:05:59,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 427 transitions, 3465 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-11-18 21:05:59,811 INFO L231 Difference]: Finished difference. Result has 308 places, 373 transitions, 2882 flow [2022-11-18 21:05:59,813 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1959, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2882, PETRI_PLACES=308, PETRI_TRANSITIONS=373} [2022-11-18 21:05:59,814 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 83 predicate places. [2022-11-18 21:05:59,814 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 373 transitions, 2882 flow [2022-11-18 21:05:59,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:05:59,815 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:05:59,815 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:59,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 21:05:59,816 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:05:59,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:59,817 INFO L85 PathProgramCache]: Analyzing trace with hash 719472450, now seen corresponding path program 4 times [2022-11-18 21:05:59,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:59,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909244782] [2022-11-18 21:05:59,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:59,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:00,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:00,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909244782] [2022-11-18 21:06:00,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909244782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:00,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:00,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:06:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241407022] [2022-11-18 21:06:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:00,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:06:00,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:06:00,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:06:00,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 248 [2022-11-18 21:06:00,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 373 transitions, 2882 flow. Second operand has 8 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:00,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:00,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 248 [2022-11-18 21:06:00,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:03,382 INFO L130 PetriNetUnfolder]: 2257/15442 cut-off events. [2022-11-18 21:06:03,383 INFO L131 PetriNetUnfolder]: For 40178/41900 co-relation queries the response was YES. [2022-11-18 21:06:03,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34209 conditions, 15442 events. 2257/15442 cut-off events. For 40178/41900 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 221171 event pairs, 390 based on Foata normal form. 591/14917 useless extension candidates. Maximal degree in co-relation 34131. Up to 1616 conditions per place. [2022-11-18 21:06:03,519 INFO L137 encePairwiseOnDemand]: 235/248 looper letters, 100 selfloop transitions, 76 changer transitions 22/425 dead transitions. [2022-11-18 21:06:03,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 425 transitions, 3803 flow [2022-11-18 21:06:03,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:06:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 21:06:03,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2429 transitions. [2022-11-18 21:06:03,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8903958944281525 [2022-11-18 21:06:03,527 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2429 transitions. [2022-11-18 21:06:03,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2429 transitions. [2022-11-18 21:06:03,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:03,529 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2429 transitions. [2022-11-18 21:06:03,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.8181818181818) internal successors, (2429), 11 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:03,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:03,541 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:03,541 INFO L175 Difference]: Start difference. First operand has 308 places, 373 transitions, 2882 flow. Second operand 11 states and 2429 transitions. [2022-11-18 21:06:03,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 425 transitions, 3803 flow [2022-11-18 21:06:03,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 425 transitions, 3765 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-11-18 21:06:03,760 INFO L231 Difference]: Finished difference. Result has 316 places, 369 transitions, 2916 flow [2022-11-18 21:06:03,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2916, PETRI_PLACES=316, PETRI_TRANSITIONS=369} [2022-11-18 21:06:03,762 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 91 predicate places. [2022-11-18 21:06:03,762 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 369 transitions, 2916 flow [2022-11-18 21:06:03,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:03,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:03,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:03,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:06:03,764 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:06:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:03,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1406888384, now seen corresponding path program 5 times [2022-11-18 21:06:03,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:03,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98443116] [2022-11-18 21:06:03,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:03,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:04,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:04,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98443116] [2022-11-18 21:06:04,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98443116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:04,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:04,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:06:04,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475294365] [2022-11-18 21:06:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:04,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:06:04,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:04,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:06:04,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:06:04,124 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 248 [2022-11-18 21:06:04,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 369 transitions, 2916 flow. Second operand has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:04,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:04,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 248 [2022-11-18 21:06:04,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:06,460 INFO L130 PetriNetUnfolder]: 1616/12597 cut-off events. [2022-11-18 21:06:06,461 INFO L131 PetriNetUnfolder]: For 29191/30550 co-relation queries the response was YES. [2022-11-18 21:06:06,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26987 conditions, 12597 events. 1616/12597 cut-off events. For 29191/30550 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 176801 event pairs, 314 based on Foata normal form. 364/12062 useless extension candidates. Maximal degree in co-relation 26917. Up to 1483 conditions per place. [2022-11-18 21:06:06,592 INFO L137 encePairwiseOnDemand]: 236/248 looper letters, 58 selfloop transitions, 28 changer transitions 23/387 dead transitions. [2022-11-18 21:06:06,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 387 transitions, 3191 flow [2022-11-18 21:06:06,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:06:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 21:06:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1786 transitions. [2022-11-18 21:06:06,597 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9002016129032258 [2022-11-18 21:06:06,597 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1786 transitions. [2022-11-18 21:06:06,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1786 transitions. [2022-11-18 21:06:06,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:06,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1786 transitions. [2022-11-18 21:06:06,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 223.25) internal successors, (1786), 8 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:06,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 248.0) internal successors, (2232), 9 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:06,607 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 248.0) internal successors, (2232), 9 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:06,608 INFO L175 Difference]: Start difference. First operand has 316 places, 369 transitions, 2916 flow. Second operand 8 states and 1786 transitions. [2022-11-18 21:06:06,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 387 transitions, 3191 flow [2022-11-18 21:06:06,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 387 transitions, 3042 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-18 21:06:06,792 INFO L231 Difference]: Finished difference. Result has 318 places, 355 transitions, 2582 flow [2022-11-18 21:06:06,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2582, PETRI_PLACES=318, PETRI_TRANSITIONS=355} [2022-11-18 21:06:06,794 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 93 predicate places. [2022-11-18 21:06:06,794 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 355 transitions, 2582 flow [2022-11-18 21:06:06,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:06,795 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:06,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:06,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 21:06:06,796 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:06:06,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:06,796 INFO L85 PathProgramCache]: Analyzing trace with hash 985212066, now seen corresponding path program 1 times [2022-11-18 21:06:06,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:06,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114972775] [2022-11-18 21:06:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:06,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:07,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:07,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114972775] [2022-11-18 21:06:07,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114972775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:07,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:07,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:06:07,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771571348] [2022-11-18 21:06:07,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:07,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:06:07,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:07,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:06:07,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:06:07,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 248 [2022-11-18 21:06:07,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 355 transitions, 2582 flow. Second operand has 8 states, 8 states have (on average 219.5) internal successors, (1756), 8 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:07,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:07,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 248 [2022-11-18 21:06:07,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:10,066 INFO L130 PetriNetUnfolder]: 1996/13632 cut-off events. [2022-11-18 21:06:10,067 INFO L131 PetriNetUnfolder]: For 34959/36674 co-relation queries the response was YES. [2022-11-18 21:06:10,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31499 conditions, 13632 events. 1996/13632 cut-off events. For 34959/36674 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 196155 event pairs, 360 based on Foata normal form. 427/13151 useless extension candidates. Maximal degree in co-relation 31429. Up to 1794 conditions per place. [2022-11-18 21:06:10,180 INFO L137 encePairwiseOnDemand]: 237/248 looper letters, 52 selfloop transitions, 53 changer transitions 102/460 dead transitions. [2022-11-18 21:06:10,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 460 transitions, 4172 flow [2022-11-18 21:06:10,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:06:10,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 21:06:10,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2674 transitions. [2022-11-18 21:06:10,188 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985215053763441 [2022-11-18 21:06:10,189 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2674 transitions. [2022-11-18 21:06:10,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2674 transitions. [2022-11-18 21:06:10,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:10,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2674 transitions. [2022-11-18 21:06:10,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 222.83333333333334) internal successors, (2674), 12 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:10,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 248.0) internal successors, (3224), 13 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:10,206 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 248.0) internal successors, (3224), 13 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:10,206 INFO L175 Difference]: Start difference. First operand has 318 places, 355 transitions, 2582 flow. Second operand 12 states and 2674 transitions. [2022-11-18 21:06:10,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 460 transitions, 4172 flow [2022-11-18 21:06:10,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 460 transitions, 4053 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-11-18 21:06:10,412 INFO L231 Difference]: Finished difference. Result has 326 places, 347 transitions, 2378 flow [2022-11-18 21:06:10,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2378, PETRI_PLACES=326, PETRI_TRANSITIONS=347} [2022-11-18 21:06:10,413 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 101 predicate places. [2022-11-18 21:06:10,413 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 347 transitions, 2378 flow [2022-11-18 21:06:10,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 219.5) internal successors, (1756), 8 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:10,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:10,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:10,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 21:06:10,415 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:06:10,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:10,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1709443040, now seen corresponding path program 1 times [2022-11-18 21:06:10,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:10,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909523820] [2022-11-18 21:06:10,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:10,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:10,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:10,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909523820] [2022-11-18 21:06:10,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909523820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:10,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:10,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:10,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185257148] [2022-11-18 21:06:10,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:10,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:10,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:10,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:10,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 248 [2022-11-18 21:06:10,471 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 347 transitions, 2378 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:10,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:10,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 248 [2022-11-18 21:06:10,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:11,394 INFO L130 PetriNetUnfolder]: 587/6376 cut-off events. [2022-11-18 21:06:11,395 INFO L131 PetriNetUnfolder]: For 13830/14361 co-relation queries the response was YES. [2022-11-18 21:06:11,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12932 conditions, 6376 events. 587/6376 cut-off events. For 13830/14361 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 82875 event pairs, 35 based on Foata normal form. 182/6175 useless extension candidates. Maximal degree in co-relation 12885. Up to 396 conditions per place. [2022-11-18 21:06:11,449 INFO L137 encePairwiseOnDemand]: 242/248 looper letters, 19 selfloop transitions, 4 changer transitions 0/336 dead transitions. [2022-11-18 21:06:11,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 336 transitions, 2209 flow [2022-11-18 21:06:11,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:11,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:06:11,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2022-11-18 21:06:11,457 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9408602150537635 [2022-11-18 21:06:11,457 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2022-11-18 21:06:11,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2022-11-18 21:06:11,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:11,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2022-11-18 21:06:11,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:11,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:11,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:11,463 INFO L175 Difference]: Start difference. First operand has 326 places, 347 transitions, 2378 flow. Second operand 3 states and 700 transitions. [2022-11-18 21:06:11,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 336 transitions, 2209 flow [2022-11-18 21:06:11,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 336 transitions, 2159 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-18 21:06:11,560 INFO L231 Difference]: Finished difference. Result has 308 places, 334 transitions, 2119 flow [2022-11-18 21:06:11,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2119, PETRI_PLACES=308, PETRI_TRANSITIONS=334} [2022-11-18 21:06:11,562 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 83 predicate places. [2022-11-18 21:06:11,562 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 334 transitions, 2119 flow [2022-11-18 21:06:11,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:11,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:11,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:11,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 21:06:11,563 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:06:11,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:11,564 INFO L85 PathProgramCache]: Analyzing trace with hash -753145038, now seen corresponding path program 1 times [2022-11-18 21:06:11,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:11,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902992827] [2022-11-18 21:06:11,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:11,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:11,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:11,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902992827] [2022-11-18 21:06:11,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902992827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:11,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:11,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:06:11,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260054299] [2022-11-18 21:06:11,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:11,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:06:11,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:11,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:06:11,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:06:11,657 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 248 [2022-11-18 21:06:11,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 334 transitions, 2119 flow. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:11,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:11,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 248 [2022-11-18 21:06:11,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:12,446 INFO L130 PetriNetUnfolder]: 459/4597 cut-off events. [2022-11-18 21:06:12,446 INFO L131 PetriNetUnfolder]: For 11709/12098 co-relation queries the response was YES. [2022-11-18 21:06:12,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9923 conditions, 4597 events. 459/4597 cut-off events. For 11709/12098 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 53986 event pairs, 53 based on Foata normal form. 178/4499 useless extension candidates. Maximal degree in co-relation 9885. Up to 290 conditions per place. [2022-11-18 21:06:12,480 INFO L137 encePairwiseOnDemand]: 244/248 looper letters, 36 selfloop transitions, 5 changer transitions 3/329 dead transitions. [2022-11-18 21:06:12,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 329 transitions, 1993 flow [2022-11-18 21:06:12,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:06:12,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 21:06:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2022-11-18 21:06:12,482 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9435483870967742 [2022-11-18 21:06:12,482 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2022-11-18 21:06:12,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2022-11-18 21:06:12,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:12,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2022-11-18 21:06:12,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:12,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:12,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:12,488 INFO L175 Difference]: Start difference. First operand has 308 places, 334 transitions, 2119 flow. Second operand 3 states and 702 transitions. [2022-11-18 21:06:12,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 329 transitions, 1993 flow [2022-11-18 21:06:12,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 329 transitions, 1979 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 21:06:12,560 INFO L231 Difference]: Finished difference. Result has 310 places, 322 transitions, 1873 flow [2022-11-18 21:06:12,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1873, PETRI_PLACES=310, PETRI_TRANSITIONS=322} [2022-11-18 21:06:12,562 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 85 predicate places. [2022-11-18 21:06:12,562 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 322 transitions, 1873 flow [2022-11-18 21:06:12,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:12,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:12,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:12,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 21:06:12,563 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:06:12,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:12,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1592893584, now seen corresponding path program 1 times [2022-11-18 21:06:12,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:12,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085097442] [2022-11-18 21:06:12,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:12,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:13,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:13,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085097442] [2022-11-18 21:06:13,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085097442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:13,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:13,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 21:06:13,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979947064] [2022-11-18 21:06:13,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:13,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:06:13,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:13,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:06:13,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:06:13,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 248 [2022-11-18 21:06:13,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 322 transitions, 1873 flow. Second operand has 12 states, 12 states have (on average 203.33333333333334) internal successors, (2440), 12 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:13,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:13,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 248 [2022-11-18 21:06:13,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:18,259 INFO L130 PetriNetUnfolder]: 5146/16466 cut-off events. [2022-11-18 21:06:18,259 INFO L131 PetriNetUnfolder]: For 34679/35253 co-relation queries the response was YES. [2022-11-18 21:06:18,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40706 conditions, 16466 events. 5146/16466 cut-off events. For 34679/35253 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 205221 event pairs, 2561 based on Foata normal form. 191/15530 useless extension candidates. Maximal degree in co-relation 40667. Up to 6567 conditions per place. [2022-11-18 21:06:18,438 INFO L137 encePairwiseOnDemand]: 229/248 looper letters, 214 selfloop transitions, 62 changer transitions 65/565 dead transitions. [2022-11-18 21:06:18,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 565 transitions, 4056 flow [2022-11-18 21:06:18,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 21:06:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 21:06:18,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 8065 transitions. [2022-11-18 21:06:18,450 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8338502894954508 [2022-11-18 21:06:18,450 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 8065 transitions. [2022-11-18 21:06:18,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 8065 transitions. [2022-11-18 21:06:18,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:18,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 8065 transitions. [2022-11-18 21:06:18,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 206.7948717948718) internal successors, (8065), 39 states have internal predecessors, (8065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:18,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 248.0) internal successors, (9920), 40 states have internal predecessors, (9920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:18,486 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 248.0) internal successors, (9920), 40 states have internal predecessors, (9920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:18,487 INFO L175 Difference]: Start difference. First operand has 310 places, 322 transitions, 1873 flow. Second operand 39 states and 8065 transitions. [2022-11-18 21:06:18,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 565 transitions, 4056 flow [2022-11-18 21:06:18,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 565 transitions, 4051 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 21:06:18,653 INFO L231 Difference]: Finished difference. Result has 381 places, 380 transitions, 2463 flow [2022-11-18 21:06:18,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2463, PETRI_PLACES=381, PETRI_TRANSITIONS=380} [2022-11-18 21:06:18,655 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 156 predicate places. [2022-11-18 21:06:18,655 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 380 transitions, 2463 flow [2022-11-18 21:06:18,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.33333333333334) internal successors, (2440), 12 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:18,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:18,656 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:18,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:06:18,656 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:06:18,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:18,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1908615802, now seen corresponding path program 2 times [2022-11-18 21:06:18,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:18,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336783635] [2022-11-18 21:06:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:18,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:18,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:18,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:18,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336783635] [2022-11-18 21:06:18,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336783635] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:18,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:18,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 21:06:18,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400773230] [2022-11-18 21:06:18,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:18,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:06:18,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:18,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:06:18,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:06:18,905 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 248 [2022-11-18 21:06:18,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 380 transitions, 2463 flow. Second operand has 9 states, 9 states have (on average 214.33333333333334) internal successors, (1929), 9 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:18,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:18,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 248 [2022-11-18 21:06:18,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:22,284 INFO L130 PetriNetUnfolder]: 1820/13427 cut-off events. [2022-11-18 21:06:22,285 INFO L131 PetriNetUnfolder]: For 48293/50856 co-relation queries the response was YES. [2022-11-18 21:06:22,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36483 conditions, 13427 events. 1820/13427 cut-off events. For 48293/50856 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 192967 event pairs, 154 based on Foata normal form. 615/13244 useless extension candidates. Maximal degree in co-relation 36410. Up to 1015 conditions per place. [2022-11-18 21:06:22,435 INFO L137 encePairwiseOnDemand]: 230/248 looper letters, 106 selfloop transitions, 67 changer transitions 18/532 dead transitions. [2022-11-18 21:06:22,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 532 transitions, 3863 flow [2022-11-18 21:06:22,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:06:22,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 21:06:22,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4590 transitions. [2022-11-18 21:06:22,444 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.881336405529954 [2022-11-18 21:06:22,444 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4590 transitions. [2022-11-18 21:06:22,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4590 transitions. [2022-11-18 21:06:22,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:22,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4590 transitions. [2022-11-18 21:06:22,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 218.57142857142858) internal successors, (4590), 21 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:22,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 248.0) internal successors, (5456), 22 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:22,466 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 248.0) internal successors, (5456), 22 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:22,466 INFO L175 Difference]: Start difference. First operand has 381 places, 380 transitions, 2463 flow. Second operand 21 states and 4590 transitions. [2022-11-18 21:06:22,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 532 transitions, 3863 flow [2022-11-18 21:06:22,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 532 transitions, 3728 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-11-18 21:06:22,854 INFO L231 Difference]: Finished difference. Result has 409 places, 435 transitions, 3106 flow [2022-11-18 21:06:22,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3106, PETRI_PLACES=409, PETRI_TRANSITIONS=435} [2022-11-18 21:06:22,854 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 184 predicate places. [2022-11-18 21:06:22,854 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 435 transitions, 3106 flow [2022-11-18 21:06:22,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 214.33333333333334) internal successors, (1929), 9 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:22,855 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:22,855 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:22,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:06:22,856 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:06:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1515790104, now seen corresponding path program 3 times [2022-11-18 21:06:22,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:22,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222953783] [2022-11-18 21:06:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:22,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:23,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:23,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222953783] [2022-11-18 21:06:23,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222953783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:23,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:23,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 21:06:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290685359] [2022-11-18 21:06:23,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:23,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:06:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:23,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:06:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:06:23,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 248 [2022-11-18 21:06:23,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 435 transitions, 3106 flow. Second operand has 12 states, 12 states have (on average 203.33333333333334) internal successors, (2440), 12 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:23,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:23,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 248 [2022-11-18 21:06:23,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 21:06:38,202 INFO L130 PetriNetUnfolder]: 18823/51441 cut-off events. [2022-11-18 21:06:38,202 INFO L131 PetriNetUnfolder]: For 245850/253323 co-relation queries the response was YES. [2022-11-18 21:06:38,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178582 conditions, 51441 events. 18823/51441 cut-off events. For 245850/253323 co-relation queries the response was YES. Maximal size of possible extension queue 3851. Compared 712196 event pairs, 8642 based on Foata normal form. 607/47419 useless extension candidates. Maximal degree in co-relation 178498. Up to 21070 conditions per place. [2022-11-18 21:06:38,910 INFO L137 encePairwiseOnDemand]: 231/248 looper letters, 218 selfloop transitions, 59 changer transitions 24/574 dead transitions. [2022-11-18 21:06:38,910 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 574 transitions, 4886 flow [2022-11-18 21:06:38,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 21:06:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 21:06:38,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4366 transitions. [2022-11-18 21:06:38,916 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383256528417818 [2022-11-18 21:06:38,917 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4366 transitions. [2022-11-18 21:06:38,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4366 transitions. [2022-11-18 21:06:38,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 21:06:38,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4366 transitions. [2022-11-18 21:06:38,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 207.9047619047619) internal successors, (4366), 21 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:38,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 248.0) internal successors, (5456), 22 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:38,935 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 248.0) internal successors, (5456), 22 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:38,935 INFO L175 Difference]: Start difference. First operand has 409 places, 435 transitions, 3106 flow. Second operand 21 states and 4366 transitions. [2022-11-18 21:06:38,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 574 transitions, 4886 flow [2022-11-18 21:06:47,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 574 transitions, 4880 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 21:06:47,201 INFO L231 Difference]: Finished difference. Result has 441 places, 463 transitions, 3665 flow [2022-11-18 21:06:47,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=3102, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3665, PETRI_PLACES=441, PETRI_TRANSITIONS=463} [2022-11-18 21:06:47,202 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 216 predicate places. [2022-11-18 21:06:47,202 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 463 transitions, 3665 flow [2022-11-18 21:06:47,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.33333333333334) internal successors, (2440), 12 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:47,203 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 21:06:47,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:47,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 21:06:47,204 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 21:06:47,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:47,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2088913520, now seen corresponding path program 4 times [2022-11-18 21:06:47,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:47,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301927072] [2022-11-18 21:06:47,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:47,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:06:47,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:47,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301927072] [2022-11-18 21:06:47,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301927072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:47,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:47,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 21:06:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9733653] [2022-11-18 21:06:47,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:47,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:06:47,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:06:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:06:47,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 248 [2022-11-18 21:06:47,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 463 transitions, 3665 flow. Second operand has 9 states, 9 states have (on average 214.33333333333334) internal successors, (1929), 9 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:06:47,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 21:06:47,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 248 [2022-11-18 21:06:47,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand