./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8 --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 d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 --- 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-2329fc7 [2022-12-13 14:22:12,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:22:12,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:22:12,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:22:12,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:22:12,415 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:22:12,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:22:12,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:22:12,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:22:12,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:22:12,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:22:12,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:22:12,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:22:12,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:22:12,423 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:22:12,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:22:12,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:22:12,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:22:12,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:22:12,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:22:12,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:22:12,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:22:12,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:22:12,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:22:12,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:22:12,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:22:12,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:22:12,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:22:12,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:22:12,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:22:12,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:22:12,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:22:12,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:22:12,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:22:12,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:22:12,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:22:12,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:22:12,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:22:12,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:22:12,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:22:12,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:22:12,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:22:12,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:22:12,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:22:12,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:22:12,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:22:12,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:22:12,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:22:12,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:22:12,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:22:12,474 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:22:12,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:22:12,474 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:22:12,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:22:12,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:22:12,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:22:12,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:22:12,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:22:12,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:22:12,476 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:22:12,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:22:12,476 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:22:12,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:22:12,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:22:12,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:22:12,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:22:12,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:22:12,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:22:12,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:22:12,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:22:12,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:22:12,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:22:12,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:22:12,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:22:12,479 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:22:12,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:22:12,479 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:22:12,479 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6a1dd92aa2998cfb1326128fd549d301e029b328accb048c4d2ec692e416e63 [2022-12-13 14:22:12,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:22:12,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:22:12,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:22:12,682 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:22:12,682 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:22:12,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-12-13 14:22:15,196 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:22:15,351 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:22:15,351 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c [2022-12-13 14:22:15,356 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/data/b7b414368/91f967458c5548fe9f3bd78886867341/FLAGdceda5217 [2022-12-13 14:22:15,800 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/data/b7b414368/91f967458c5548fe9f3bd78886867341 [2022-12-13 14:22:15,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:22:15,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:22:15,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:22:15,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:22:15,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:22:15,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:15,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@218b6a0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15, skipping insertion in model container [2022-12-13 14:22:15,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:15,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:22:15,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:22:15,947 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-12-13 14:22:15,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:22:15,957 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:22:15,974 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/sv-benchmarks/c/weaver/bench-exp2x9.wvr.c[2669,2682] [2022-12-13 14:22:15,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:22:15,985 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:22:15,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15 WrapperNode [2022-12-13 14:22:15,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:22:15,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:22:15,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:22:15,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:22:15,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:15,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,012 INFO L138 Inliner]: procedures = 20, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 91 [2022-12-13 14:22:16,013 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:22:16,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:22:16,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:22:16,013 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:22:16,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:22:16,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:22:16,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:22:16,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:22:16,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (1/1) ... [2022-12-13 14:22:16,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:22:16,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:22:16,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:22:16,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:22:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:22:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 14:22:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 14:22:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 14:22:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 14:22:16,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 14:22:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 14:22:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-13 14:22:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-13 14:22:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:22:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 14:22:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 14:22:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:22:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:22:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 14:22:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 14:22:16,095 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 14:22:16,176 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:22:16,177 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:22:16,374 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:22:16,380 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:22:16,380 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 14:22:16,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:22:16 BoogieIcfgContainer [2022-12-13 14:22:16,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:22:16,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:22:16,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:22:16,386 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:22:16,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:22:15" (1/3) ... [2022-12-13 14:22:16,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d538104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:22:16, skipping insertion in model container [2022-12-13 14:22:16,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:22:15" (2/3) ... [2022-12-13 14:22:16,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d538104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:22:16, skipping insertion in model container [2022-12-13 14:22:16,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:22:16" (3/3) ... [2022-12-13 14:22:16,388 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp2x9.wvr.c [2022-12-13 14:22:16,394 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 14:22:16,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:22:16,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:22:16,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 14:22:16,485 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-13 14:22:16,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 149 transitions, 330 flow [2022-12-13 14:22:16,576 INFO L130 PetriNetUnfolder]: 10/145 cut-off events. [2022-12-13 14:22:16,576 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 14:22:16,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 10/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-12-13 14:22:16,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 149 transitions, 330 flow [2022-12-13 14:22:16,587 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 288 flow [2022-12-13 14:22:16,591 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 14:22:16,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 132 transitions, 288 flow [2022-12-13 14:22:16,604 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 132 transitions, 288 flow [2022-12-13 14:22:16,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 132 transitions, 288 flow [2022-12-13 14:22:16,629 INFO L130 PetriNetUnfolder]: 10/132 cut-off events. [2022-12-13 14:22:16,630 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 14:22:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 132 events. 10/132 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2022-12-13 14:22:16,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 3312 [2022-12-13 14:22:19,509 INFO L134 LiptonReduction]: Checked pairs total: 2968 [2022-12-13 14:22:19,510 INFO L136 LiptonReduction]: Total number of compositions: 121 [2022-12-13 14:22:19,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:22:19,530 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;@79c3e152, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:22:19,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-13 14:22:19,537 INFO L130 PetriNetUnfolder]: 4/24 cut-off events. [2022-12-13 14:22:19,537 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-13 14:22:19,537 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:22:19,538 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] [2022-12-13 14:22:19,538 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 2 more)] === [2022-12-13 14:22:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:19,543 INFO L85 PathProgramCache]: Analyzing trace with hash 147326463, now seen corresponding path program 1 times [2022-12-13 14:22:19,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:19,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231657443] [2022-12-13 14:22:19,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:19,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:20,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:20,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:20,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231657443] [2022-12-13 14:22:20,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231657443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:22:20,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:22:20,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 14:22:20,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669329116] [2022-12-13 14:22:20,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:22:20,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:22:20,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:20,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:22:20,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:22:20,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 270 [2022-12-13 14:22:20,249 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,249 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:22:20,249 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 270 [2022-12-13 14:22:20,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:22:20,408 INFO L130 PetriNetUnfolder]: 497/677 cut-off events. [2022-12-13 14:22:20,408 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-12-13 14:22:20,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 677 events. 497/677 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1758 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 1016. Up to 471 conditions per place. [2022-12-13 14:22:20,414 INFO L137 encePairwiseOnDemand]: 264/270 looper letters, 41 selfloop transitions, 5 changer transitions 1/47 dead transitions. [2022-12-13 14:22:20,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 233 flow [2022-12-13 14:22:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:22:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 14:22:20,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2022-12-13 14:22:20,424 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4222222222222222 [2022-12-13 14:22:20,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2022-12-13 14:22:20,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2022-12-13 14:22:20,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:22:20,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2022-12-13 14:22:20,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 270.0) internal successors, (1080), 4 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,436 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 3 states and 342 transitions. [2022-12-13 14:22:20,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 233 flow [2022-12-13 14:22:20,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-13 14:22:20,440 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 91 flow [2022-12-13 14:22:20,441 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2022-12-13 14:22:20,443 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2022-12-13 14:22:20,443 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 91 flow [2022-12-13 14:22:20,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:22:20,444 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] [2022-12-13 14:22:20,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:22:20,444 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 2 more)] === [2022-12-13 14:22:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1583847422, now seen corresponding path program 1 times [2022-12-13 14:22:20,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:20,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229951778] [2022-12-13 14:22:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:20,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:20,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:20,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:20,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229951778] [2022-12-13 14:22:20,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229951778] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:22:20,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:22:20,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:22:20,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545648507] [2022-12-13 14:22:20,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:22:20,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:22:20,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:20,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:22:20,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:22:20,748 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 270 [2022-12-13 14:22:20,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,749 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:22:20,749 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 270 [2022-12-13 14:22:20,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:22:20,919 INFO L130 PetriNetUnfolder]: 461/641 cut-off events. [2022-12-13 14:22:20,919 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-12-13 14:22:20,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 641 events. 461/641 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1802 event pairs, 37 based on Foata normal form. 36/677 useless extension candidates. Maximal degree in co-relation 586. Up to 435 conditions per place. [2022-12-13 14:22:20,922 INFO L137 encePairwiseOnDemand]: 263/270 looper letters, 50 selfloop transitions, 9 changer transitions 1/60 dead transitions. [2022-12-13 14:22:20,922 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 60 transitions, 289 flow [2022-12-13 14:22:20,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:22:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:22:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2022-12-13 14:22:20,924 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2022-12-13 14:22:20,925 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2022-12-13 14:22:20,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2022-12-13 14:22:20,925 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:22:20,925 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2022-12-13 14:22:20,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,928 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,928 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 91 flow. Second operand 4 states and 430 transitions. [2022-12-13 14:22:20,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 60 transitions, 289 flow [2022-12-13 14:22:20,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 60 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:22:20,930 INFO L231 Difference]: Finished difference. Result has 32 places, 33 transitions, 127 flow [2022-12-13 14:22:20,930 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=32, PETRI_TRANSITIONS=33} [2022-12-13 14:22:20,930 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2022-12-13 14:22:20,930 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 33 transitions, 127 flow [2022-12-13 14:22:20,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:20,931 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:22:20,931 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] [2022-12-13 14:22:20,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:22:20,931 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 2 more)] === [2022-12-13 14:22:20,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:20,932 INFO L85 PathProgramCache]: Analyzing trace with hash 229316062, now seen corresponding path program 2 times [2022-12-13 14:22:20,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:20,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273435586] [2022-12-13 14:22:20,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:20,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:20,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:21,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:21,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273435586] [2022-12-13 14:22:21,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273435586] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:22:21,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491974967] [2022-12-13 14:22:21,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:22:21,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:22:21,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:22:21,058 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:22:21,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:22:21,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 14:22:21,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 14:22:21,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:22:21,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:22:21,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:21,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:22:21,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:21,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491974967] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:22:21,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:22:21,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 14:22:21,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499221473] [2022-12-13 14:22:21,371 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:22:21,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:22:21,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:22:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:22:21,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 270 [2022-12-13 14:22:21,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 127 flow. Second operand has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:21,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:22:21,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 270 [2022-12-13 14:22:21,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:22:21,827 INFO L130 PetriNetUnfolder]: 893/1233 cut-off events. [2022-12-13 14:22:21,828 INFO L131 PetriNetUnfolder]: For 586/586 co-relation queries the response was YES. [2022-12-13 14:22:21,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1233 events. 893/1233 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3950 event pairs, 125 based on Foata normal form. 36/1269 useless extension candidates. Maximal degree in co-relation 745. Up to 482 conditions per place. [2022-12-13 14:22:21,833 INFO L137 encePairwiseOnDemand]: 263/270 looper letters, 89 selfloop transitions, 12 changer transitions 1/102 dead transitions. [2022-12-13 14:22:21,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 102 transitions, 526 flow [2022-12-13 14:22:21,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:22:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:22:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 652 transitions. [2022-12-13 14:22:21,835 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4024691358024691 [2022-12-13 14:22:21,835 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 652 transitions. [2022-12-13 14:22:21,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 652 transitions. [2022-12-13 14:22:21,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:22:21,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 652 transitions. [2022-12-13 14:22:21,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:21,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 270.0) internal successors, (1890), 7 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:21,839 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 270.0) internal successors, (1890), 7 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:21,840 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 127 flow. Second operand 6 states and 652 transitions. [2022-12-13 14:22:21,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 102 transitions, 526 flow [2022-12-13 14:22:21,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 102 transitions, 512 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 14:22:21,841 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 179 flow [2022-12-13 14:22:21,842 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=179, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2022-12-13 14:22:21,842 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2022-12-13 14:22:21,842 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 179 flow [2022-12-13 14:22:21,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.85714285714286) internal successors, (692), 7 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:21,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:22:21,843 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] [2022-12-13 14:22:21,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:22:22,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 14:22:22,044 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 2 more)] === [2022-12-13 14:22:22,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1738762011, now seen corresponding path program 1 times [2022-12-13 14:22:22,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:22,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093878283] [2022-12-13 14:22:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:22,258 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:22,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:22,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093878283] [2022-12-13 14:22:22,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093878283] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:22:22,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:22:22,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:22:22,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346502583] [2022-12-13 14:22:22,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:22:22,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:22:22,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:22:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:22:22,396 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 270 [2022-12-13 14:22:22,397 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:22,397 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:22:22,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 270 [2022-12-13 14:22:22,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:22:22,618 INFO L130 PetriNetUnfolder]: 863/1203 cut-off events. [2022-12-13 14:22:22,618 INFO L131 PetriNetUnfolder]: For 1858/1858 co-relation queries the response was YES. [2022-12-13 14:22:22,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3838 conditions, 1203 events. 863/1203 cut-off events. For 1858/1858 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3868 event pairs, 175 based on Foata normal form. 30/1233 useless extension candidates. Maximal degree in co-relation 2126. Up to 997 conditions per place. [2022-12-13 14:22:22,623 INFO L137 encePairwiseOnDemand]: 263/270 looper letters, 49 selfloop transitions, 11 changer transitions 11/71 dead transitions. [2022-12-13 14:22:22,623 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 71 transitions, 434 flow [2022-12-13 14:22:22,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:22:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:22:22,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 430 transitions. [2022-12-13 14:22:22,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.39814814814814814 [2022-12-13 14:22:22,624 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 430 transitions. [2022-12-13 14:22:22,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 430 transitions. [2022-12-13 14:22:22,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:22:22,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 430 transitions. [2022-12-13 14:22:22,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:22,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:22,627 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:22,627 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 179 flow. Second operand 4 states and 430 transitions. [2022-12-13 14:22:22,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 71 transitions, 434 flow [2022-12-13 14:22:22,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 71 transitions, 423 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 14:22:22,631 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 222 flow [2022-12-13 14:22:22,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2022-12-13 14:22:22,631 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2022-12-13 14:22:22,631 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 222 flow [2022-12-13 14:22:22,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 97.5) internal successors, (390), 4 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:22,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:22:22,632 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] [2022-12-13 14:22:22,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:22:22,632 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 2 more)] === [2022-12-13 14:22:22,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:22,632 INFO L85 PathProgramCache]: Analyzing trace with hash -653678758, now seen corresponding path program 1 times [2022-12-13 14:22:22,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:22,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140266617] [2022-12-13 14:22:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:22,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:22,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140266617] [2022-12-13 14:22:22,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140266617] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:22:22,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609247326] [2022-12-13 14:22:22,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:22,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:22:22,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:22:22,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:22:22,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:22:22,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:22,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:22:22,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:22:23,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:23,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:22:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:23,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609247326] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:22:23,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:22:23,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 14:22:23,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523319509] [2022-12-13 14:22:23,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:22:23,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:22:23,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:22:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:22:23,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 270 [2022-12-13 14:22:23,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 222 flow. Second operand has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 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) [2022-12-13 14:22:23,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:22:23,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 270 [2022-12-13 14:22:23,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:22:23,737 INFO L130 PetriNetUnfolder]: 1541/2125 cut-off events. [2022-12-13 14:22:23,738 INFO L131 PetriNetUnfolder]: For 2975/2975 co-relation queries the response was YES. [2022-12-13 14:22:23,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7304 conditions, 2125 events. 1541/2125 cut-off events. For 2975/2975 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7636 event pairs, 281 based on Foata normal form. 90/2215 useless extension candidates. Maximal degree in co-relation 3827. Up to 896 conditions per place. [2022-12-13 14:22:23,751 INFO L137 encePairwiseOnDemand]: 263/270 looper letters, 103 selfloop transitions, 14 changer transitions 3/120 dead transitions. [2022-12-13 14:22:23,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 120 transitions, 789 flow [2022-12-13 14:22:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:22:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:22:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 648 transitions. [2022-12-13 14:22:23,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-13 14:22:23,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 648 transitions. [2022-12-13 14:22:23,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 648 transitions. [2022-12-13 14:22:23,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:22:23,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 648 transitions. [2022-12-13 14:22:23,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.0) internal successors, (648), 6 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:23,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 270.0) internal successors, (1890), 7 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:23,759 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 270.0) internal successors, (1890), 7 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:23,759 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 222 flow. Second operand 6 states and 648 transitions. [2022-12-13 14:22:23,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 120 transitions, 789 flow [2022-12-13 14:22:23,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 120 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 14:22:23,765 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 284 flow [2022-12-13 14:22:23,765 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2022-12-13 14:22:23,766 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2022-12-13 14:22:23,766 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 284 flow [2022-12-13 14:22:23,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 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) [2022-12-13 14:22:23,766 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:22:23,767 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] [2022-12-13 14:22:23,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:22:23,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:22:23,969 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 2 more)] === [2022-12-13 14:22:23,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash 978777495, now seen corresponding path program 2 times [2022-12-13 14:22:23,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:23,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22959585] [2022-12-13 14:22:23,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:23,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:24,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:24,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22959585] [2022-12-13 14:22:24,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22959585] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:22:24,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:22:24,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:22:24,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228831378] [2022-12-13 14:22:24,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:22:24,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:22:24,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:24,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:22:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 14:22:24,357 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 270 [2022-12-13 14:22:24,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 284 flow. Second operand has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:24,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:22:24,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 270 [2022-12-13 14:22:24,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:22:24,648 INFO L130 PetriNetUnfolder]: 1793/2461 cut-off events. [2022-12-13 14:22:24,648 INFO L131 PetriNetUnfolder]: For 5849/5849 co-relation queries the response was YES. [2022-12-13 14:22:24,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9876 conditions, 2461 events. 1793/2461 cut-off events. For 5849/5849 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 9002 event pairs, 485 based on Foata normal form. 84/2545 useless extension candidates. Maximal degree in co-relation 5216. Up to 1989 conditions per place. [2022-12-13 14:22:24,659 INFO L137 encePairwiseOnDemand]: 264/270 looper letters, 69 selfloop transitions, 10 changer transitions 3/82 dead transitions. [2022-12-13 14:22:24,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 82 transitions, 604 flow [2022-12-13 14:22:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:22:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 14:22:24,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 432 transitions. [2022-12-13 14:22:24,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4 [2022-12-13 14:22:24,662 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 432 transitions. [2022-12-13 14:22:24,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 432 transitions. [2022-12-13 14:22:24,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:22:24,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 432 transitions. [2022-12-13 14:22:24,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:24,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:24,666 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 270.0) internal successors, (1350), 5 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:24,666 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 284 flow. Second operand 4 states and 432 transitions. [2022-12-13 14:22:24,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 82 transitions, 604 flow [2022-12-13 14:22:24,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 82 transitions, 593 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 14:22:24,673 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 306 flow [2022-12-13 14:22:24,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=306, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2022-12-13 14:22:24,674 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2022-12-13 14:22:24,674 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 306 flow [2022-12-13 14:22:24,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 98.5) internal successors, (394), 4 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:24,674 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:22:24,674 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] [2022-12-13 14:22:24,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:22:24,675 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 2 more)] === [2022-12-13 14:22:24,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:24,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1947814759, now seen corresponding path program 1 times [2022-12-13 14:22:24,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:24,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311315537] [2022-12-13 14:22:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:24,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:24,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:24,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:24,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311315537] [2022-12-13 14:22:24,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311315537] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:22:24,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522345203] [2022-12-13 14:22:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:24,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:22:24,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:22:24,798 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:22:24,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:22:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:24,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:22:24,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:22:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:24,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:22:25,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:25,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522345203] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:22:25,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:22:25,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 14:22:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254674379] [2022-12-13 14:22:25,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:22:25,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:22:25,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:22:25,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:22:25,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:22:25,197 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 270 [2022-12-13 14:22:25,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 306 flow. Second operand has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 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) [2022-12-13 14:22:25,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:22:25,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 270 [2022-12-13 14:22:25,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:22:25,756 INFO L130 PetriNetUnfolder]: 2267/3107 cut-off events. [2022-12-13 14:22:25,756 INFO L131 PetriNetUnfolder]: For 8414/8414 co-relation queries the response was YES. [2022-12-13 14:22:25,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13015 conditions, 3107 events. 2267/3107 cut-off events. For 8414/8414 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 11958 event pairs, 505 based on Foata normal form. 76/3183 useless extension candidates. Maximal degree in co-relation 6992. Up to 1779 conditions per place. [2022-12-13 14:22:25,778 INFO L137 encePairwiseOnDemand]: 263/270 looper letters, 114 selfloop transitions, 14 changer transitions 3/131 dead transitions. [2022-12-13 14:22:25,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 131 transitions, 960 flow [2022-12-13 14:22:25,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:22:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 14:22:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 652 transitions. [2022-12-13 14:22:25,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4024691358024691 [2022-12-13 14:22:25,781 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 652 transitions. [2022-12-13 14:22:25,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 652 transitions. [2022-12-13 14:22:25,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:22:25,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 652 transitions. [2022-12-13 14:22:25,783 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.66666666666667) internal successors, (652), 6 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:25,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 270.0) internal successors, (1890), 7 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:25,786 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 270.0) internal successors, (1890), 7 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:22:25,786 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 306 flow. Second operand 6 states and 652 transitions. [2022-12-13 14:22:25,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 131 transitions, 960 flow [2022-12-13 14:22:25,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 131 transitions, 924 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-13 14:22:25,802 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 348 flow [2022-12-13 14:22:25,802 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=348, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2022-12-13 14:22:25,803 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 22 predicate places. [2022-12-13 14:22:25,803 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 348 flow [2022-12-13 14:22:25,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.28571428571429) internal successors, (688), 7 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) [2022-12-13 14:22:25,804 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:22:25,804 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] [2022-12-13 14:22:25,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:22:26,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:22:26,005 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 2 more)] === [2022-12-13 14:22:26,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:22:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1752293260, now seen corresponding path program 1 times [2022-12-13 14:22:26,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:22:26,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438886169] [2022-12-13 14:22:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:26,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:22:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:22:27,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:22:27,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438886169] [2022-12-13 14:22:27,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438886169] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:22:27,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134689334] [2022-12-13 14:22:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:22:27,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:22:27,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:22:27,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:22:27,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:22:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:22:27,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 14:22:27,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:23:20,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:20,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:23:34,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:23:34,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134689334] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:23:34,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:23:34,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2022-12-13 14:23:34,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165739813] [2022-12-13 14:23:34,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:23:34,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 14:23:34,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:23:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 14:23:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=162, Unknown=15, NotChecked=0, Total=240 [2022-12-13 14:23:36,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:38,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:40,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:42,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:44,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:46,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:48,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:50,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:50,820 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 270 [2022-12-13 14:23:50,820 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 348 flow. Second operand has 16 states, 16 states have (on average 90.0625) internal successors, (1441), 16 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:23:50,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:23:50,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 270 [2022-12-13 14:23:50,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:23:53,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:23:55,019 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:09,383 WARN L233 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 74 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:24:11,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:13,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:16,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:19,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:23,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:26,049 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse10 (* (- 128) c_~x4~0))) (let ((.cse11 (div (+ c_~x3~0 .cse10) 4294967296)) (.cse9 (div c_~x4~0 4294967296))) (let ((.cse0 (mod c_~x1~0 4294967296)) (.cse2 (* (- 8589934592) .cse9)) (.cse3 (* (- 127) c_~x4~0)) (.cse4 (* .cse11 (- 4328521728))) (.cse5 (+ (* 8 c_~x4~0) (* .cse9 270549120) (* .cse11 270549121))) (.cse6 (mod (div c_~x3~0 128) 4294967296)) (.cse8 (mod c_~n~0 4294967296)) (.cse1 (div c_~n~0 4294967296)) (.cse7 (div c_~x3~0 4294967296))) (and (= (mod c_~x3~0 128) 0) (< 0 .cse0) (= .cse0 (mod c_~x2~0 4294967296)) (<= (div (+ (* c_~n~0 (- 268435457)) (* 1152921508901814272 .cse1) 4529848320 .cse2 (* c_~x3~0 268435457) .cse3 .cse4) 4261412864) .cse5) (= .cse6 (mod c_~x4~0 4294967296)) (<= (div (+ (* 1152921508901814272 .cse7) 4529848320 .cse2 .cse3 .cse4) 4261412864) .cse5) (not (< (mod c_~x3~0 4294967296) .cse8)) (<= (+ (* .cse9 4294967296) 1) c_~x4~0) (< .cse6 .cse8) (= (+ c_~x1~0 (* (div c_~x2~0 4294967296) 4294967296)) (+ (* 4294967296 (div c_~x1~0 4294967296)) c_~x2~0)) (<= (+ c_~x3~0 (* 4294967296 .cse1)) (+ (* 4294967296 .cse7) (* 128 c_~x4~0) (* (div (+ .cse10 c_~n~0 4294967166) 4294967296) 4294967296))))))) is different from false [2022-12-13 14:24:28,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:30,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:32,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:34,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:36,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:38,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:40,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:42,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.34s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:45,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:55,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:24:58,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:03,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:05,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:07,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:09,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:11,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:13,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:16,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:18,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:21,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:23,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:25,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:27,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:29,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:31,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:33,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:35,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:37,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:39,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:49,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:52,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:54,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:25:56,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:00,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:03,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:04,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:07,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:09,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:11,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:13,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:15,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:18,506 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:20,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:22,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:24,235 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:27,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:29,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:31,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:33,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:35,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:37,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:40,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:42,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:45,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:46,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:26:46,407 INFO L130 PetriNetUnfolder]: 3523/4850 cut-off events. [2022-12-13 14:26:46,407 INFO L131 PetriNetUnfolder]: For 16916/16916 co-relation queries the response was YES. [2022-12-13 14:26:46,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21490 conditions, 4850 events. 3523/4850 cut-off events. For 16916/16916 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 20546 event pairs, 609 based on Foata normal form. 20/4870 useless extension candidates. Maximal degree in co-relation 17779. Up to 3303 conditions per place. [2022-12-13 14:26:46,426 INFO L137 encePairwiseOnDemand]: 252/270 looper letters, 175 selfloop transitions, 81 changer transitions 11/267 dead transitions. [2022-12-13 14:26:46,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 267 transitions, 2072 flow [2022-12-13 14:26:46,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 14:26:46,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-12-13 14:26:46,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1605 transitions. [2022-12-13 14:26:46,430 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2022-12-13 14:26:46,430 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1605 transitions. [2022-12-13 14:26:46,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1605 transitions. [2022-12-13 14:26:46,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:26:46,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1605 transitions. [2022-12-13 14:26:46,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 100.3125) internal successors, (1605), 16 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:26:46,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 270.0) internal successors, (4590), 17 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) [2022-12-13 14:26:46,445 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 270.0) internal successors, (4590), 17 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) [2022-12-13 14:26:46,445 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 348 flow. Second operand 16 states and 1605 transitions. [2022-12-13 14:26:46,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 267 transitions, 2072 flow [2022-12-13 14:26:46,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 267 transitions, 1963 flow, removed 18 selfloop flow, removed 3 redundant places. [2022-12-13 14:26:46,471 INFO L231 Difference]: Finished difference. Result has 79 places, 125 transitions, 1141 flow [2022-12-13 14:26:46,471 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1141, PETRI_PLACES=79, PETRI_TRANSITIONS=125} [2022-12-13 14:26:46,472 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2022-12-13 14:26:46,472 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 125 transitions, 1141 flow [2022-12-13 14:26:46,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 90.0625) internal successors, (1441), 16 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:26:46,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:26:46,472 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] [2022-12-13 14:26:46,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:26:46,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:26:46,674 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 2 more)] === [2022-12-13 14:26:46,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:26:46,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1032836242, now seen corresponding path program 1 times [2022-12-13 14:26:46,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:26:46,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764592686] [2022-12-13 14:26:46,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:26:46,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:26:46,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:26:47,092 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:26:47,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:26:47,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764592686] [2022-12-13 14:26:47,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764592686] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:26:47,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505442365] [2022-12-13 14:26:47,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:26:47,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:26:47,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:26:47,094 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:26:47,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:32:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:26,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 14:32:26,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:32:44,875 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:32:44,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:32:52,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:32:52,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505442365] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:32:52,357 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:32:52,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 12 [2022-12-13 14:32:52,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710553478] [2022-12-13 14:32:52,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:32:52,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 14:32:52,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:32:52,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 14:32:52,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=133, Unknown=10, NotChecked=0, Total=182 [2022-12-13 14:32:53,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:32:55,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:32:57,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:32:59,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:02,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:02,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 270 [2022-12-13 14:33:02,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 125 transitions, 1141 flow. Second operand has 14 states, 14 states have (on average 90.21428571428571) internal successors, (1263), 14 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:33:02,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 14:33:02,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 270 [2022-12-13 14:33:02,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 14:33:04,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:06,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:19,655 WARN L233 SmtUtils]: Spent 12.61s on a formula simplification. DAG size of input: 66 DAG size of output: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 14:33:22,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:24,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:26,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:30,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:39,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:46,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:48,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:50,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:52,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:55,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:56,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:33:58,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:00,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:02,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:05,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:06,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:09,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:12,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:14,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:17,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:19,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:21,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:24,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:25,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:29,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:31,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:35,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:36,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:38,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:40,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:44,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:46,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:48,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:50,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:53,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:56,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:34:59,088 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-13 14:35:01,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-13 14:35:03,012 INFO L130 PetriNetUnfolder]: 4661/6391 cut-off events. [2022-12-13 14:35:03,012 INFO L131 PetriNetUnfolder]: For 36074/36074 co-relation queries the response was YES. [2022-12-13 14:35:03,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35085 conditions, 6391 events. 4661/6391 cut-off events. For 36074/36074 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 28406 event pairs, 369 based on Foata normal form. 2/6393 useless extension candidates. Maximal degree in co-relation 34723. Up to 5074 conditions per place. [2022-12-13 14:35:03,044 INFO L137 encePairwiseOnDemand]: 253/270 looper letters, 214 selfloop transitions, 48 changer transitions 5/267 dead transitions. [2022-12-13 14:35:03,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 267 transitions, 2561 flow [2022-12-13 14:35:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:35:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-13 14:35:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1030 transitions. [2022-12-13 14:35:03,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.3814814814814815 [2022-12-13 14:35:03,047 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1030 transitions. [2022-12-13 14:35:03,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1030 transitions. [2022-12-13 14:35:03,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 14:35:03,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1030 transitions. [2022-12-13 14:35:03,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 103.0) internal successors, (1030), 10 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:35:03,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 270.0) internal successors, (2970), 11 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:35:03,051 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 270.0) internal successors, (2970), 11 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:35:03,051 INFO L175 Difference]: Start difference. First operand has 79 places, 125 transitions, 1141 flow. Second operand 10 states and 1030 transitions. [2022-12-13 14:35:03,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 267 transitions, 2561 flow [2022-12-13 14:35:03,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 267 transitions, 2374 flow, removed 89 selfloop flow, removed 1 redundant places. [2022-12-13 14:35:03,139 INFO L231 Difference]: Finished difference. Result has 93 places, 164 transitions, 1446 flow [2022-12-13 14:35:03,139 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=270, PETRI_DIFFERENCE_MINUEND_FLOW=954, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1446, PETRI_PLACES=93, PETRI_TRANSITIONS=164} [2022-12-13 14:35:03,139 INFO L288 CegarLoopForPetriNet]: 34 programPoint places, 59 predicate places. [2022-12-13 14:35:03,140 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 164 transitions, 1446 flow [2022-12-13 14:35:03,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 90.21428571428571) internal successors, (1263), 14 states have internal predecessors, (1263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 14:35:03,140 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 14:35:03,140 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] [2022-12-13 14:35:03,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:35:03,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 14:35:03,342 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 2 more)] === [2022-12-13 14:35:03,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:35:03,343 INFO L85 PathProgramCache]: Analyzing trace with hash -802855658, now seen corresponding path program 2 times [2022-12-13 14:35:03,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:35:03,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922402260] [2022-12-13 14:35:03,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:35:03,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:35:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:35:03,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:35:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922402260] [2022-12-13 14:35:03,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922402260] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:35:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218410949] [2022-12-13 14:35:03,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 14:35:03,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:35:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:35:03,995 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:35:03,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cf7c17d-f416-48f7-af7c-8fb813b398fe/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process