./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eebc57bb84d5e49c07b21e35f27ee095cb699b6ae996e22651132239fcb21755 --- 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-38b53e6 [2022-11-25 22:29:17,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:29:17,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:29:17,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:29:17,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:29:17,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:29:17,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:29:17,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:29:17,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:29:17,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:29:17,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:29:17,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:29:17,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:29:17,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:29:17,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:29:17,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:29:17,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:29:17,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:29:17,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:29:17,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:29:17,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:29:17,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:29:17,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:29:17,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:29:17,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:29:17,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:29:17,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:29:17,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:29:17,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:29:17,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:29:17,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:29:17,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:29:17,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:29:17,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:29:17,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:29:17,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:29:17,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:29:17,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:29:17,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:29:17,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:29:17,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:29:17,477 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:29:17,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:29:17,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:29:17,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:29:17,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:29:17,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:29:17,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:29:17,510 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:29:17,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:29:17,511 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:29:17,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:29:17,515 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:29:17,515 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:29:17,516 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:29:17,516 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:29:17,516 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:29:17,516 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:29:17,517 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:29:17,517 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:29:17,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:29:17,518 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:29:17,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:29:17,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:29:17,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:29:17,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:29:17,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:29:17,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:29:17,520 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:29:17,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:29:17,521 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:29:17,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:29:17,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:29:17,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:29:17,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:29:17,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:29:17,523 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:29:17,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:29:17,523 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:29:17,524 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:29:17,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:29:17,524 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:29:17,524 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:29:17,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebc57bb84d5e49c07b21e35f27ee095cb699b6ae996e22651132239fcb21755 [2022-11-25 22:29:17,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:29:17,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:29:17,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:29:17,905 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:29:17,906 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:29:17,907 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c [2022-11-25 22:29:21,099 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:29:21,961 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:29:21,961 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c [2022-11-25 22:29:22,017 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/data/5871c62a7/f007dbb1160a44c4b84b90a8a29cfc17/FLAGb96384b5b [2022-11-25 22:29:22,032 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/data/5871c62a7/f007dbb1160a44c4b84b90a8a29cfc17 [2022-11-25 22:29:22,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:29:22,037 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:29:22,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:29:22,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:29:22,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:29:22,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:29:22" (1/1) ... [2022-11-25 22:29:22,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482b5cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:22, skipping insertion in model container [2022-11-25 22:29:22,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:29:22" (1/1) ... [2022-11-25 22:29:22,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:29:22,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:29:24,831 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_8caa8242-1c05-4349-b17f-115ddcb7310b/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c[381679,381692] [2022-11-25 22:29:24,862 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_8caa8242-1c05-4349-b17f-115ddcb7310b/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c[383339,383352] [2022-11-25 22:29:25,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:29:25,285 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:29:26,503 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_8caa8242-1c05-4349-b17f-115ddcb7310b/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c[381679,381692] [2022-11-25 22:29:26,507 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_8caa8242-1c05-4349-b17f-115ddcb7310b/sv-benchmarks/c/combinations/Problem05_label43+token_ring.15.cil.c[383339,383352] [2022-11-25 22:29:26,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:29:26,626 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:29:26,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26 WrapperNode [2022-11-25 22:29:26,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:29:26,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:29:26,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:29:26,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:29:26,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:26,721 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,244 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13260 [2022-11-25 22:29:27,244 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:29:27,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:29:27,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:29:27,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:29:27,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,669 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:29:27,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:29:27,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:29:27,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:29:27,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (1/1) ... [2022-11-25 22:29:27,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:29:27,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:27,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:29:28,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:29:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:29:28,089 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 22:29:28,090 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 22:29:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 22:29:28,090 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 22:29:28,090 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 22:29:28,090 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 22:29:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-25 22:29:28,091 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-25 22:29:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 22:29:28,091 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 22:29:28,091 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 22:29:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 22:29:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 22:29:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 22:29:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:29:28,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:29:28,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:29:28,323 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:29:28,325 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:29:38,322 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:29:41,082 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:29:41,082 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-11-25 22:29:41,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:29:41 BoogieIcfgContainer [2022-11-25 22:29:41,088 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:29:41,090 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:29:41,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:29:41,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:29:41,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:29:22" (1/3) ... [2022-11-25 22:29:41,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8ee65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:29:41, skipping insertion in model container [2022-11-25 22:29:41,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:29:26" (2/3) ... [2022-11-25 22:29:41,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8ee65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:29:41, skipping insertion in model container [2022-11-25 22:29:41,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:29:41" (3/3) ... [2022-11-25 22:29:41,097 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.15.cil.c [2022-11-25 22:29:41,119 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:29:41,120 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:29:41,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:29:41,227 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=FINITE_AUTOMATA, 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;@5bed90d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:29:41,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:29:41,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-25 22:29:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 22:29:41,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:41,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:41,254 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:29:41,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash -26028369, now seen corresponding path program 1 times [2022-11-25 22:29:41,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:29:41,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166774447] [2022-11-25 22:29:41,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:41,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:29:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:29:41,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:29:41,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166774447] [2022-11-25 22:29:41,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166774447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:41,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:29:41,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:29:41,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150642361] [2022-11-25 22:29:41,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:41,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:29:41,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:41,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:29:41,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:29:41,886 INFO L87 Difference]: Start difference. First operand has 1848 states, 1809 states have (on average 1.9541182974018796) internal successors, (3535), 1814 states have internal predecessors, (3535), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 22:29:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:43,221 INFO L93 Difference]: Finished difference Result 3877 states and 7503 transitions. [2022-11-25 22:29:43,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:29:43,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 71 [2022-11-25 22:29:43,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:43,258 INFO L225 Difference]: With dead ends: 3877 [2022-11-25 22:29:43,258 INFO L226 Difference]: Without dead ends: 2028 [2022-11-25 22:29:43,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:29:43,280 INFO L413 NwaCegarLoop]: 3549 mSDtfsCounter, 3820 mSDsluCounter, 3445 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3820 SdHoareTripleChecker+Valid, 6994 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:43,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3820 Valid, 6994 Invalid, 758 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 22:29:43,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2028 states. [2022-11-25 22:29:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2028 to 2027. [2022-11-25 22:29:43,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2027 states, 1961 states have (on average 1.9163691993880674) internal successors, (3758), 1965 states have internal predecessors, (3758), 52 states have call successors, (52), 13 states have call predecessors, (52), 12 states have return successors, (50), 49 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-25 22:29:43,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2027 states to 2027 states and 3860 transitions. [2022-11-25 22:29:43,470 INFO L78 Accepts]: Start accepts. Automaton has 2027 states and 3860 transitions. Word has length 71 [2022-11-25 22:29:43,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:43,471 INFO L495 AbstractCegarLoop]: Abstraction has 2027 states and 3860 transitions. [2022-11-25 22:29:43,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 22:29:43,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2027 states and 3860 transitions. [2022-11-25 22:29:43,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 22:29:43,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:43,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:43,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:29:43,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:29:43,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 183933015, now seen corresponding path program 1 times [2022-11-25 22:29:43,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:29:43,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398566456] [2022-11-25 22:29:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:43,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:29:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:44,055 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:29:44,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:29:44,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398566456] [2022-11-25 22:29:44,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398566456] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:44,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547327035] [2022-11-25 22:29:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:44,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:44,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:44,071 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:44,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:29:44,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:44,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:29:44,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:29:44,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:44,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547327035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:44,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:29:44,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:29:44,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621085342] [2022-11-25 22:29:44,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:44,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:29:44,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:44,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:29:44,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:44,537 INFO L87 Difference]: Start difference. First operand 2027 states and 3860 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:45,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:45,237 INFO L93 Difference]: Finished difference Result 2782 states and 5049 transitions. [2022-11-25 22:29:45,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:29:45,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-25 22:29:45,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:45,254 INFO L225 Difference]: With dead ends: 2782 [2022-11-25 22:29:45,254 INFO L226 Difference]: Without dead ends: 2401 [2022-11-25 22:29:45,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:45,259 INFO L413 NwaCegarLoop]: 3376 mSDtfsCounter, 3533 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3533 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:45,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3533 Valid, 3624 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:29:45,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2022-11-25 22:29:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2395. [2022-11-25 22:29:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 2273 states have (on average 1.86229652441707) internal successors, (4233), 2278 states have internal predecessors, (4233), 96 states have call successors, (96), 25 states have call predecessors, (96), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-25 22:29:45,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 4423 transitions. [2022-11-25 22:29:45,395 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 4423 transitions. Word has length 144 [2022-11-25 22:29:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:45,398 INFO L495 AbstractCegarLoop]: Abstraction has 2395 states and 4423 transitions. [2022-11-25 22:29:45,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 2 states have internal predecessors, (107), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:45,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 4423 transitions. [2022-11-25 22:29:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 22:29:45,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:45,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:45,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:45,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:45,615 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:29:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:45,616 INFO L85 PathProgramCache]: Analyzing trace with hash -802749291, now seen corresponding path program 1 times [2022-11-25 22:29:45,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:29:45,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714221050] [2022-11-25 22:29:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:45,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:29:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:45,932 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:29:45,934 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:29:45,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714221050] [2022-11-25 22:29:45,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714221050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:45,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459975789] [2022-11-25 22:29:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:45,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:45,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:45,940 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:45,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:29:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:46,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:29:46,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:29:46,380 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:46,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459975789] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:46,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:29:46,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:29:46,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417449359] [2022-11-25 22:29:46,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:46,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:29:46,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:29:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:46,385 INFO L87 Difference]: Start difference. First operand 2395 states and 4423 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:47,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:47,009 INFO L93 Difference]: Finished difference Result 3880 states and 6758 transitions. [2022-11-25 22:29:47,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:29:47,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-25 22:29:47,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:47,027 INFO L225 Difference]: With dead ends: 3880 [2022-11-25 22:29:47,028 INFO L226 Difference]: Without dead ends: 3131 [2022-11-25 22:29:47,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:47,033 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3527 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3527 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:47,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3527 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:29:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2022-11-25 22:29:47,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3123. [2022-11-25 22:29:47,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 2891 states have (on average 1.7886544448287789) internal successors, (5171), 2898 states have internal predecessors, (5171), 182 states have call successors, (182), 49 states have call predecessors, (182), 48 states have return successors, (180), 176 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-25 22:29:47,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5533 transitions. [2022-11-25 22:29:47,159 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5533 transitions. Word has length 144 [2022-11-25 22:29:47,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:47,159 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5533 transitions. [2022-11-25 22:29:47,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:47,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5533 transitions. [2022-11-25 22:29:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 22:29:47,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:47,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:47,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:47,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:47,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:29:47,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:47,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1405814957, now seen corresponding path program 1 times [2022-11-25 22:29:47,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:29:47,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035779521] [2022-11-25 22:29:47,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:47,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:29:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:29:47,629 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:29:47,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035779521] [2022-11-25 22:29:47,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035779521] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:47,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412244917] [2022-11-25 22:29:47,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:47,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:47,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:47,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:47,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:29:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:47,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:29:47,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:47,994 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-25 22:29:47,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:48,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412244917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:48,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:29:48,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:29:48,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070223405] [2022-11-25 22:29:48,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:48,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:29:48,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:48,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:29:48,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:48,005 INFO L87 Difference]: Start difference. First operand 3123 states and 5533 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:48,742 INFO L93 Difference]: Finished difference Result 6052 states and 10126 transitions. [2022-11-25 22:29:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:29:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-25 22:29:48,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:48,767 INFO L225 Difference]: With dead ends: 6052 [2022-11-25 22:29:48,767 INFO L226 Difference]: Without dead ends: 4575 [2022-11-25 22:29:48,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:48,776 INFO L413 NwaCegarLoop]: 3374 mSDtfsCounter, 3551 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3551 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:48,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3551 Valid, 3622 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:29:48,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2022-11-25 22:29:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4563. [2022-11-25 22:29:48,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4563 states, 4115 states have (on average 1.7066828675577157) internal successors, (7023), 4126 states have internal predecessors, (7023), 350 states have call successors, (350), 97 states have call predecessors, (350), 96 states have return successors, (348), 340 states have call predecessors, (348), 348 states have call successors, (348) [2022-11-25 22:29:48,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7721 transitions. [2022-11-25 22:29:48,969 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7721 transitions. Word has length 144 [2022-11-25 22:29:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:48,970 INFO L495 AbstractCegarLoop]: Abstraction has 4563 states and 7721 transitions. [2022-11-25 22:29:48,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 2 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:48,971 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7721 transitions. [2022-11-25 22:29:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 22:29:48,981 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:48,981 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:48,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:49,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:49,190 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:29:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:49,191 INFO L85 PathProgramCache]: Analyzing trace with hash 904269841, now seen corresponding path program 1 times [2022-11-25 22:29:49,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:29:49,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386692522] [2022-11-25 22:29:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:49,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:29:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:49,415 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:29:49,415 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:29:49,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386692522] [2022-11-25 22:29:49,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386692522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:49,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568530166] [2022-11-25 22:29:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:49,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:49,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:49,418 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:49,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:29:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:49,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 1105 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:29:49,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:49,808 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 22:29:49,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:49,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568530166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:49,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:29:49,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:29:49,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698117698] [2022-11-25 22:29:49,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:49,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:29:49,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:49,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:29:49,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:49,812 INFO L87 Difference]: Start difference. First operand 4563 states and 7721 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:50,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:50,803 INFO L93 Difference]: Finished difference Result 10348 states and 16762 transitions. [2022-11-25 22:29:50,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:29:50,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-25 22:29:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:50,851 INFO L225 Difference]: With dead ends: 10348 [2022-11-25 22:29:50,851 INFO L226 Difference]: Without dead ends: 7431 [2022-11-25 22:29:50,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:50,868 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3545 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:50,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:29:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2022-11-25 22:29:51,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7411. [2022-11-25 22:29:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7411 states, 6539 states have (on average 1.6331243309374521) internal successors, (10679), 6558 states have internal predecessors, (10679), 678 states have call successors, (678), 193 states have call predecessors, (678), 192 states have return successors, (676), 660 states have call predecessors, (676), 676 states have call successors, (676) [2022-11-25 22:29:51,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7411 states to 7411 states and 12033 transitions. [2022-11-25 22:29:51,276 INFO L78 Accepts]: Start accepts. Automaton has 7411 states and 12033 transitions. Word has length 144 [2022-11-25 22:29:51,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:51,277 INFO L495 AbstractCegarLoop]: Abstraction has 7411 states and 12033 transitions. [2022-11-25 22:29:51,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:51,279 INFO L276 IsEmpty]: Start isEmpty. Operand 7411 states and 12033 transitions. [2022-11-25 22:29:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 22:29:51,294 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:51,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:51,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:51,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:51,503 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:29:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:51,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1114632369, now seen corresponding path program 1 times [2022-11-25 22:29:51,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:29:51,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997796529] [2022-11-25 22:29:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:51,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:29:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:51,767 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:29:51,767 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:29:51,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997796529] [2022-11-25 22:29:51,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997796529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:51,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331216199] [2022-11-25 22:29:51,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:51,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:51,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:51,770 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:51,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:29:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:52,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:29:52,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:52,155 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-25 22:29:52,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:52,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331216199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:52,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:29:52,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:29:52,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204158394] [2022-11-25 22:29:52,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:52,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:29:52,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:52,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:29:52,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:52,158 INFO L87 Difference]: Start difference. First operand 7411 states and 12033 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:53,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:53,086 INFO L93 Difference]: Finished difference Result 18844 states and 29834 transitions. [2022-11-25 22:29:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:29:53,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-25 22:29:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:53,186 INFO L225 Difference]: With dead ends: 18844 [2022-11-25 22:29:53,186 INFO L226 Difference]: Without dead ends: 13079 [2022-11-25 22:29:53,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:53,216 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3554 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3554 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:53,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3554 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:29:53,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13079 states. [2022-11-25 22:29:54,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13079 to 13043. [2022-11-25 22:29:54,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13043 states, 11339 states have (on average 1.578181497486551) internal successors, (17895), 11374 states have internal predecessors, (17895), 1318 states have call successors, (1318), 385 states have call predecessors, (1318), 384 states have return successors, (1316), 1284 states have call predecessors, (1316), 1316 states have call successors, (1316) [2022-11-25 22:29:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13043 states to 13043 states and 20529 transitions. [2022-11-25 22:29:54,178 INFO L78 Accepts]: Start accepts. Automaton has 13043 states and 20529 transitions. Word has length 144 [2022-11-25 22:29:54,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:54,180 INFO L495 AbstractCegarLoop]: Abstraction has 13043 states and 20529 transitions. [2022-11-25 22:29:54,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:54,181 INFO L276 IsEmpty]: Start isEmpty. Operand 13043 states and 20529 transitions. [2022-11-25 22:29:54,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 22:29:54,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:54,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:54,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:54,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 22:29:54,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:29:54,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:54,438 INFO L85 PathProgramCache]: Analyzing trace with hash 360601041, now seen corresponding path program 1 times [2022-11-25 22:29:54,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:29:54,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700899847] [2022-11-25 22:29:54,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:54,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:29:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:29:54,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:29:54,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700899847] [2022-11-25 22:29:54,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700899847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:54,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234902834] [2022-11-25 22:29:54,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:54,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:54,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:54,678 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:54,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:29:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:54,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1093 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:29:54,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:55,063 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:29:55,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:55,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234902834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:55,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:29:55,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:29:55,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85659918] [2022-11-25 22:29:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:55,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:29:55,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:55,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:29:55,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:55,067 INFO L87 Difference]: Start difference. First operand 13043 states and 20529 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:56,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:29:56,954 INFO L93 Difference]: Finished difference Result 35644 states and 55578 transitions. [2022-11-25 22:29:56,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:29:56,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-25 22:29:56,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:29:57,053 INFO L225 Difference]: With dead ends: 35644 [2022-11-25 22:29:57,054 INFO L226 Difference]: Without dead ends: 24247 [2022-11-25 22:29:57,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:57,090 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3524 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3524 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:29:57,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3524 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:29:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24247 states. [2022-11-25 22:29:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24247 to 24179. [2022-11-25 22:29:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24179 states, 20843 states have (on average 1.5417646212157559) internal successors, (32135), 20910 states have internal predecessors, (32135), 2566 states have call successors, (2566), 769 states have call predecessors, (2566), 768 states have return successors, (2564), 2500 states have call predecessors, (2564), 2564 states have call successors, (2564) [2022-11-25 22:29:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24179 states to 24179 states and 37265 transitions. [2022-11-25 22:29:58,622 INFO L78 Accepts]: Start accepts. Automaton has 24179 states and 37265 transitions. Word has length 144 [2022-11-25 22:29:58,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:29:58,623 INFO L495 AbstractCegarLoop]: Abstraction has 24179 states and 37265 transitions. [2022-11-25 22:29:58,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:29:58,627 INFO L276 IsEmpty]: Start isEmpty. Operand 24179 states and 37265 transitions. [2022-11-25 22:29:58,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 22:29:58,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:29:58,677 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:29:58,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:29:58,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:58,894 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:29:58,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:29:58,895 INFO L85 PathProgramCache]: Analyzing trace with hash -375551021, now seen corresponding path program 1 times [2022-11-25 22:29:58,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:29:58,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642017123] [2022-11-25 22:29:58,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:58,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:29:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:59,142 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:29:59,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:29:59,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642017123] [2022-11-25 22:29:59,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642017123] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:29:59,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56676401] [2022-11-25 22:29:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:29:59,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:29:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:29:59,145 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:29:59,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:29:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:29:59,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:29:59,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:29:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 22:29:59,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:29:59,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56676401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:29:59,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:29:59,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:29:59,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914387455] [2022-11-25 22:29:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:29:59,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:29:59,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:29:59,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:29:59,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:29:59,507 INFO L87 Difference]: Start difference. First operand 24179 states and 37265 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:30:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:01,764 INFO L93 Difference]: Finished difference Result 68860 states and 106266 transitions. [2022-11-25 22:30:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 144 [2022-11-25 22:30:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:01,999 INFO L225 Difference]: With dead ends: 68860 [2022-11-25 22:30:01,999 INFO L226 Difference]: Without dead ends: 46327 [2022-11-25 22:30:02,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:30:02,088 INFO L413 NwaCegarLoop]: 3334 mSDtfsCounter, 3539 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3539 SdHoareTripleChecker+Valid, 3582 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:02,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3539 Valid, 3582 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:30:02,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46327 states. [2022-11-25 22:30:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46327 to 46195. [2022-11-25 22:30:04,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46195 states, 39659 states have (on average 1.5187221059532514) internal successors, (60231), 39790 states have internal predecessors, (60231), 4998 states have call successors, (4998), 1537 states have call predecessors, (4998), 1536 states have return successors, (4996), 4868 states have call predecessors, (4996), 4996 states have call successors, (4996) [2022-11-25 22:30:04,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46195 states to 46195 states and 70225 transitions. [2022-11-25 22:30:04,966 INFO L78 Accepts]: Start accepts. Automaton has 46195 states and 70225 transitions. Word has length 144 [2022-11-25 22:30:04,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:04,967 INFO L495 AbstractCegarLoop]: Abstraction has 46195 states and 70225 transitions. [2022-11-25 22:30:04,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 2 states have internal predecessors, (101), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:30:04,967 INFO L276 IsEmpty]: Start isEmpty. Operand 46195 states and 70225 transitions. [2022-11-25 22:30:05,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-25 22:30:05,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:05,058 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:05,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:30:05,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:05,267 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:05,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash -74493551, now seen corresponding path program 1 times [2022-11-25 22:30:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:05,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215833951] [2022-11-25 22:30:05,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:05,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:06,285 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-25 22:30:06,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:06,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215833951] [2022-11-25 22:30:06,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215833951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:06,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:30:06,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 22:30:06,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483670141] [2022-11-25 22:30:06,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:06,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:30:06,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:06,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:30:06,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:30:06,289 INFO L87 Difference]: Start difference. First operand 46195 states and 70225 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 22:30:12,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:12,870 INFO L93 Difference]: Finished difference Result 158075 states and 238040 transitions. [2022-11-25 22:30:12,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:30:12,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 144 [2022-11-25 22:30:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:13,630 INFO L225 Difference]: With dead ends: 158075 [2022-11-25 22:30:13,630 INFO L226 Difference]: Without dead ends: 113527 [2022-11-25 22:30:13,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-25 22:30:13,766 INFO L413 NwaCegarLoop]: 3342 mSDtfsCounter, 4428 mSDsluCounter, 9823 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4450 SdHoareTripleChecker+Valid, 13165 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:13,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4450 Valid, 13165 Invalid, 1409 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [151 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-25 22:30:14,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113527 states. [2022-11-25 22:30:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113527 to 89203. [2022-11-25 22:30:19,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89203 states, 76395 states have (on average 1.5038549643301262) internal successors, (114887), 76654 states have internal predecessors, (114887), 9734 states have call successors, (9734), 3073 states have call predecessors, (9734), 3072 states have return successors, (9732), 9476 states have call predecessors, (9732), 9732 states have call successors, (9732) [2022-11-25 22:30:19,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89203 states to 89203 states and 134353 transitions. [2022-11-25 22:30:19,944 INFO L78 Accepts]: Start accepts. Automaton has 89203 states and 134353 transitions. Word has length 144 [2022-11-25 22:30:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:30:19,945 INFO L495 AbstractCegarLoop]: Abstraction has 89203 states and 134353 transitions. [2022-11-25 22:30:19,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 22:30:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 89203 states and 134353 transitions. [2022-11-25 22:30:20,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-25 22:30:20,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:30:20,064 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:30:20,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 22:30:20,065 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:30:20,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:30:20,065 INFO L85 PathProgramCache]: Analyzing trace with hash 831757559, now seen corresponding path program 1 times [2022-11-25 22:30:20,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:30:20,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511407433] [2022-11-25 22:30:20,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:20,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:30:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:20,483 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 44 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-25 22:30:20,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:30:20,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511407433] [2022-11-25 22:30:20,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511407433] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:30:20,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760564651] [2022-11-25 22:30:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:30:20,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:30:20,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:30:20,486 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:30:20,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8caa8242-1c05-4349-b17f-115ddcb7310b/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:30:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:30:20,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:30:20,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:30:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-25 22:30:20,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:30:20,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760564651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:30:20,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:30:20,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-25 22:30:20,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175378488] [2022-11-25 22:30:20,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:30:20,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:30:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:30:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:30:20,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:30:20,829 INFO L87 Difference]: Start difference. First operand 89203 states and 134353 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:30:26,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:30:26,141 INFO L93 Difference]: Finished difference Result 157175 states and 240212 transitions. [2022-11-25 22:30:26,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:30:26,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 167 [2022-11-25 22:30:26,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:30:26,715 INFO L225 Difference]: With dead ends: 157175 [2022-11-25 22:30:26,715 INFO L226 Difference]: Without dead ends: 112371 [2022-11-25 22:30:26,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:30:26,834 INFO L413 NwaCegarLoop]: 3452 mSDtfsCounter, 134 mSDsluCounter, 3326 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 6778 SdHoareTripleChecker+Invalid, 560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-25 22:30:26,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 6778 Invalid, 560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-25 22:30:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112371 states.