./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/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_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/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_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/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 d1799d95d0e216b78a87282e1c07d247f4f74dae2fd2ab1bbf062b2cf09b9c7c --- 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 23:29:19,379 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:29:19,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:29:19,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:29:19,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:29:19,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:29:19,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:29:19,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:29:19,432 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:29:19,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:29:19,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:29:19,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:29:19,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:29:19,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:29:19,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:29:19,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:29:19,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:29:19,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:29:19,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:29:19,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:29:19,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:29:19,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:29:19,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:29:19,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:29:19,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:29:19,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:29:19,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:29:19,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:29:19,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:29:19,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:29:19,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:29:19,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:29:19,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:29:19,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:29:19,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:29:19,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:29:19,482 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:29:19,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:29:19,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:29:19,486 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:29:19,487 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:29:19,487 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:29:19,523 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:29:19,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:29:19,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:29:19,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:29:19,525 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:29:19,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:29:19,526 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:29:19,526 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:29:19,526 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:29:19,526 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:29:19,527 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:29:19,528 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:29:19,528 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:29:19,528 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:29:19,528 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:29:19,528 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:29:19,529 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:29:19,529 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:29:19,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:29:19,530 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:29:19,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:29:19,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:29:19,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:29:19,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:29:19,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:29:19,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:29:19,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:29:19,531 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:29:19,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:29:19,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:29:19,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:29:19,532 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:29:19,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:29:19,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:29:19,533 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:29:19,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:29:19,533 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:29:19,534 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:29:19,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:29:19,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:29:19,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:29:19,534 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_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d1799d95d0e216b78a87282e1c07d247f4f74dae2fd2ab1bbf062b2cf09b9c7c [2022-11-25 23:29:19,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:29:19,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:29:19,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:29:19,887 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:29:19,888 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:29:19,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c [2022-11-25 23:29:22,939 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:29:23,724 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:29:23,724 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c [2022-11-25 23:29:23,774 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/data/6387562c3/cdb9e5fcf9f9499c8a65d2ab8f0ead06/FLAG98b7513fc [2022-11-25 23:29:23,794 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/data/6387562c3/cdb9e5fcf9f9499c8a65d2ab8f0ead06 [2022-11-25 23:29:23,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:29:23,801 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:29:23,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:29:23,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:29:23,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:29:23,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:29:23" (1/1) ... [2022-11-25 23:29:23,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b9e22e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:23, skipping insertion in model container [2022-11-25 23:29:23,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:29:23" (1/1) ... [2022-11-25 23:29:23,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:29:24,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:29:26,519 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_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c[375709,375722] [2022-11-25 23:29:26,554 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_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c[383339,383352] [2022-11-25 23:29:26,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:29:26,859 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:29:28,024 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_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c[375709,375722] [2022-11-25 23:29:28,077 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_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/sv-benchmarks/c/combinations/Problem05_label48+token_ring.09.cil-1.c[383339,383352] [2022-11-25 23:29:28,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:29:28,179 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:29:28,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28 WrapperNode [2022-11-25 23:29:28,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:29:28,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:29:28,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:29:28,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:29:28,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:28,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:28,699 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-11-25 23:29:28,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:29:28,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:29:28,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:29:28,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:29:28,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:28,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:28,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:28,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:29,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:29,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:29,319 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:29,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:29,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:29:29,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:29:29,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:29:29,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:29:29,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (1/1) ... [2022-11-25 23:29:29,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:29:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:29:29,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:29:29,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:29:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:29:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 23:29:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 23:29:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 23:29:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 23:29:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 23:29:29,586 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 23:29:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 23:29:29,587 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 23:29:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 23:29:29,587 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 23:29:29,587 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 23:29:29,587 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 23:29:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:29:29,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:29:29,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:29:29,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:29:29,785 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:29:39,029 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:29:41,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:29:41,732 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-25 23:29:41,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:29:41 BoogieIcfgContainer [2022-11-25 23:29:41,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:29:41,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:29:41,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:29:41,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:29:41,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:29:23" (1/3) ... [2022-11-25 23:29:41,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e85b638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:29:41, skipping insertion in model container [2022-11-25 23:29:41,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:29:28" (2/3) ... [2022-11-25 23:29:41,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e85b638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:29:41, skipping insertion in model container [2022-11-25 23:29:41,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:29:41" (3/3) ... [2022-11-25 23:29:41,752 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.09.cil-1.c [2022-11-25 23:29:41,780 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:29:41,780 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 23:29:41,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:29:41,900 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;@3c885bf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:29:41,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 23:29:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 1798 states, 1766 states have (on average 1.962061155152888) internal successors, (3465), 1769 states have internal predecessors, (3465), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-25 23:29:41,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 23:29:41,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:41,932 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] [2022-11-25 23:29:41,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:41,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:41,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1272175902, now seen corresponding path program 1 times [2022-11-25 23:29:41,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867753736] [2022-11-25 23:29:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:41,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:42,576 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 23:29:42,577 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:42,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867753736] [2022-11-25 23:29:42,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867753736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:42,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:29:42,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:29:42,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300770690] [2022-11-25 23:29:42,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:42,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:29:42,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:42,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:29:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:29:42,644 INFO L87 Difference]: Start difference. First operand has 1798 states, 1766 states have (on average 1.962061155152888) internal successors, (3465), 1769 states have internal predecessors, (3465), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 23:29:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:43,822 INFO L93 Difference]: Finished difference Result 3734 states and 7259 transitions. [2022-11-25 23:29:43,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:29:43,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 58 [2022-11-25 23:29:43,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:43,851 INFO L225 Difference]: With dead ends: 3734 [2022-11-25 23:29:43,851 INFO L226 Difference]: Without dead ends: 1935 [2022-11-25 23:29:43,863 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 23:29:43,869 INFO L413 NwaCegarLoop]: 3421 mSDtfsCounter, 3680 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 6756 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:43,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 6756 Invalid, 692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 23:29:43,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2022-11-25 23:29:44,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1934. [2022-11-25 23:29:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1878 states have (on average 1.9297124600638977) internal successors, (3624), 1881 states have internal predecessors, (3624), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-25 23:29:44,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3708 transitions. [2022-11-25 23:29:44,027 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3708 transitions. Word has length 58 [2022-11-25 23:29:44,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:44,028 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 3708 transitions. [2022-11-25 23:29:44,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-25 23:29:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3708 transitions. [2022-11-25 23:29:44,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 23:29:44,042 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:44,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:44,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:29:44,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:44,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2080315623, now seen corresponding path program 1 times [2022-11-25 23:29:44,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:44,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111713755] [2022-11-25 23:29:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:44,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:44,418 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:29:44,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:44,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111713755] [2022-11-25 23:29:44,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111713755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:29:44,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103199865] [2022-11-25 23:29:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:44,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:44,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:29:44,437 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:29:44,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:29:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:44,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:29:44,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:29:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 23:29:44,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:29:44,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103199865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:44,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:29:44,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 23:29:44,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238756801] [2022-11-25 23:29:44,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:44,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:29:44,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:29:44,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:29:44,835 INFO L87 Difference]: Start difference. First operand 1934 states and 3708 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:45,420 INFO L93 Difference]: Finished difference Result 2503 states and 4585 transitions. [2022-11-25 23:29:45,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:29:45,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 23:29:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:45,436 INFO L225 Difference]: With dead ends: 2503 [2022-11-25 23:29:45,436 INFO L226 Difference]: Without dead ends: 2215 [2022-11-25 23:29:45,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 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 23:29:45,440 INFO L413 NwaCegarLoop]: 3292 mSDtfsCounter, 3471 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:45,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 3472 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:29:45,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-11-25 23:29:45,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2211. [2022-11-25 23:29:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2107 states have (on average 1.8818224964404366) internal successors, (3965), 2111 states have internal predecessors, (3965), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-25 23:29:45,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 4121 transitions. [2022-11-25 23:29:45,520 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 4121 transitions. Word has length 115 [2022-11-25 23:29:45,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:45,520 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 4121 transitions. [2022-11-25 23:29:45,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:45,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 4121 transitions. [2022-11-25 23:29:45,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 23:29:45,524 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:45,525 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:45,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:29:45,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:45,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:45,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:45,733 INFO L85 PathProgramCache]: Analyzing trace with hash 194133019, now seen corresponding path program 1 times [2022-11-25 23:29:45,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:45,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94788772] [2022-11-25 23:29:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:45,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:29:45,942 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:45,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94788772] [2022-11-25 23:29:45,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94788772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:29:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090232264] [2022-11-25 23:29:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:45,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:45,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:29:45,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:29:45,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:29:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:46,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:29:46,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:29:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 23:29:46,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:29:46,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090232264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:46,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:29:46,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 23:29:46,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340433165] [2022-11-25 23:29:46,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:46,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:29:46,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:46,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:29:46,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:29:46,325 INFO L87 Difference]: Start difference. First operand 2211 states and 4121 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:46,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:46,938 INFO L93 Difference]: Finished difference Result 3328 states and 5836 transitions. [2022-11-25 23:29:46,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:29:46,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 23:29:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:46,953 INFO L225 Difference]: With dead ends: 3328 [2022-11-25 23:29:46,953 INFO L226 Difference]: Without dead ends: 2763 [2022-11-25 23:29:46,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 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 23:29:46,958 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3465 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:46,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:29:46,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-11-25 23:29:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2757. [2022-11-25 23:29:47,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2559 states have (on average 1.8112543962485346) internal successors, (4635), 2565 states have internal predecessors, (4635), 148 states have call successors, (148), 48 states have call predecessors, (148), 48 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2022-11-25 23:29:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4931 transitions. [2022-11-25 23:29:47,058 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4931 transitions. Word has length 115 [2022-11-25 23:29:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:47,058 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 4931 transitions. [2022-11-25 23:29:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4931 transitions. [2022-11-25 23:29:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 23:29:47,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:47,063 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:47,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:29:47,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:47,270 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:47,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:47,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1677722979, now seen corresponding path program 1 times [2022-11-25 23:29:47,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:47,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758555732] [2022-11-25 23:29:47,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:47,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:29:47,475 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:47,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758555732] [2022-11-25 23:29:47,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758555732] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:29:47,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312293726] [2022-11-25 23:29:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:47,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:47,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:29:47,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:29:47,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:29:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:47,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:29:47,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:29:47,760 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 23:29:47,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:29:47,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312293726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:47,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:29:47,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 23:29:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225870724] [2022-11-25 23:29:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:29:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:47,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:29:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:29:47,763 INFO L87 Difference]: Start difference. First operand 2757 states and 4931 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:48,372 INFO L93 Difference]: Finished difference Result 4954 states and 8288 transitions. [2022-11-25 23:29:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:29:48,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 23:29:48,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:48,390 INFO L225 Difference]: With dead ends: 4954 [2022-11-25 23:29:48,391 INFO L226 Difference]: Without dead ends: 3843 [2022-11-25 23:29:48,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 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 23:29:48,400 INFO L413 NwaCegarLoop]: 3290 mSDtfsCounter, 3474 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:48,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 3470 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:29:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2022-11-25 23:29:48,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3833. [2022-11-25 23:29:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3451 states have (on average 1.724427702115329) internal successors, (5951), 3461 states have internal predecessors, (5951), 284 states have call successors, (284), 96 states have call predecessors, (284), 96 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2022-11-25 23:29:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 6519 transitions. [2022-11-25 23:29:48,596 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 6519 transitions. Word has length 115 [2022-11-25 23:29:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:48,597 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 6519 transitions. [2022-11-25 23:29:48,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 6519 transitions. [2022-11-25 23:29:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 23:29:48,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:48,604 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:48,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 23:29:48,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:48,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:48,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:48,811 INFO L85 PathProgramCache]: Analyzing trace with hash -982290853, now seen corresponding path program 1 times [2022-11-25 23:29:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:48,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267240429] [2022-11-25 23:29:48,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:48,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:29:48,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267240429] [2022-11-25 23:29:48,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267240429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:29:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253031113] [2022-11-25 23:29:48,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:48,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:29:48,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:29:48,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 23:29:49,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:49,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:29:49,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:29:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 23:29:49,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:29:49,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253031113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:49,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:29:49,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 23:29:49,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585048051] [2022-11-25 23:29:49,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:49,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:29:49,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:49,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:29:49,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:29:49,272 INFO L87 Difference]: Start difference. First operand 3833 states and 6519 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:49,949 INFO L93 Difference]: Finished difference Result 8158 states and 13092 transitions. [2022-11-25 23:29:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:29:49,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 23:29:49,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:49,980 INFO L225 Difference]: With dead ends: 8158 [2022-11-25 23:29:49,980 INFO L226 Difference]: Without dead ends: 5971 [2022-11-25 23:29:49,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 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 23:29:49,992 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3459 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:49,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:29:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2022-11-25 23:29:50,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5953. [2022-11-25 23:29:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5953 states, 5211 states have (on average 1.637881404720783) internal successors, (8535), 5229 states have internal predecessors, (8535), 548 states have call successors, (548), 192 states have call predecessors, (548), 192 states have return successors, (548), 532 states have call predecessors, (548), 548 states have call successors, (548) [2022-11-25 23:29:50,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 9631 transitions. [2022-11-25 23:29:50,471 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 9631 transitions. Word has length 115 [2022-11-25 23:29:50,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:50,472 INFO L495 AbstractCegarLoop]: Abstraction has 5953 states and 9631 transitions. [2022-11-25 23:29:50,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:50,472 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 9631 transitions. [2022-11-25 23:29:50,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 23:29:50,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:50,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:50,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 23:29:50,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:50,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:50,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1330989475, now seen corresponding path program 1 times [2022-11-25 23:29:50,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:50,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410229999] [2022-11-25 23:29:50,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:50,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:50,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:29:50,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:50,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410229999] [2022-11-25 23:29:50,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410229999] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:29:50,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473191904] [2022-11-25 23:29:50,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:50,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:29:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:29:50,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:29:50,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 23:29:51,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:51,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 23:29:51,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:29:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:29:51,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:29:51,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473191904] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:51,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:29:51,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 23:29:51,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138452513] [2022-11-25 23:29:51,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:51,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:29:51,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:51,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:29:51,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:29:51,230 INFO L87 Difference]: Start difference. First operand 5953 states and 9631 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:52,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:52,192 INFO L93 Difference]: Finished difference Result 14470 states and 22500 transitions. [2022-11-25 23:29:52,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:29:52,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 23:29:52,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:52,253 INFO L225 Difference]: With dead ends: 14470 [2022-11-25 23:29:52,253 INFO L226 Difference]: Without dead ends: 10163 [2022-11-25 23:29:52,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 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 23:29:52,274 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3453 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:52,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3453 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:29:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2022-11-25 23:29:52,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10129. [2022-11-25 23:29:52,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10129 states, 8683 states have (on average 1.5670851088333526) internal successors, (13607), 8717 states have internal predecessors, (13607), 1060 states have call successors, (1060), 384 states have call predecessors, (1060), 384 states have return successors, (1060), 1028 states have call predecessors, (1060), 1060 states have call successors, (1060) [2022-11-25 23:29:52,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10129 states to 10129 states and 15727 transitions. [2022-11-25 23:29:52,908 INFO L78 Accepts]: Start accepts. Automaton has 10129 states and 15727 transitions. Word has length 115 [2022-11-25 23:29:52,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:52,909 INFO L495 AbstractCegarLoop]: Abstraction has 10129 states and 15727 transitions. [2022-11-25 23:29:52,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 23:29:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 10129 states and 15727 transitions. [2022-11-25 23:29:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 23:29:52,930 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:52,930 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:52,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 23:29:53,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37e5d627-dde0-4e8d-9b79-cb9c5e172c10/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 23:29:53,137 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:53,138 INFO L85 PathProgramCache]: Analyzing trace with hash 149989343, now seen corresponding path program 1 times [2022-11-25 23:29:53,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:53,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620715954] [2022-11-25 23:29:53,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:53,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:53,298 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 23:29:53,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:53,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620715954] [2022-11-25 23:29:53,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620715954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:53,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:29:53,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:29:53,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194537724] [2022-11-25 23:29:53,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:53,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:29:53,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:53,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:29:53,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:29:53,302 INFO L87 Difference]: Start difference. First operand 10129 states and 15727 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:29:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:54,525 INFO L93 Difference]: Finished difference Result 16723 states and 25776 transitions. [2022-11-25 23:29:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:29:54,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-11-25 23:29:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:54,578 INFO L225 Difference]: With dead ends: 16723 [2022-11-25 23:29:54,578 INFO L226 Difference]: Without dead ends: 12401 [2022-11-25 23:29:54,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:29:54,594 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 100 mSDsluCounter, 3254 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6602 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:54,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 6602 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:29:54,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12401 states. [2022-11-25 23:29:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12401 to 11713. [2022-11-25 23:29:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11713 states, 10203 states have (on average 1.5908066255023032) internal successors, (16231), 10237 states have internal predecessors, (16231), 1092 states have call successors, (1092), 416 states have call predecessors, (1092), 416 states have return successors, (1092), 1060 states have call predecessors, (1092), 1092 states have call successors, (1092) [2022-11-25 23:29:55,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11713 states to 11713 states and 18415 transitions. [2022-11-25 23:29:55,269 INFO L78 Accepts]: Start accepts. Automaton has 11713 states and 18415 transitions. Word has length 115 [2022-11-25 23:29:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:55,271 INFO L495 AbstractCegarLoop]: Abstraction has 11713 states and 18415 transitions. [2022-11-25 23:29:55,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 23:29:55,271 INFO L276 IsEmpty]: Start isEmpty. Operand 11713 states and 18415 transitions. [2022-11-25 23:29:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 23:29:55,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:55,301 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2022-11-25 23:29:55,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:29:55,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash 844601868, now seen corresponding path program 1 times [2022-11-25 23:29:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:55,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799159410] [2022-11-25 23:29:55,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:55,435 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 23:29:55,436 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:55,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799159410] [2022-11-25 23:29:55,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799159410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:55,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:29:55,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:29:55,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276916] [2022-11-25 23:29:55,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:55,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:29:55,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:55,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:29:55,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:29:55,442 INFO L87 Difference]: Start difference. First operand 11713 states and 18415 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 23:29:56,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:29:56,636 INFO L93 Difference]: Finished difference Result 31558 states and 48788 transitions. [2022-11-25 23:29:56,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:29:56,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-25 23:29:56,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:29:56,843 INFO L225 Difference]: With dead ends: 31558 [2022-11-25 23:29:56,843 INFO L226 Difference]: Without dead ends: 21491 [2022-11-25 23:29:56,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:29:56,870 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3461 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:29:56,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3461 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:29:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21491 states. [2022-11-25 23:29:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21491 to 21393. [2022-11-25 23:29:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21393 states, 18443 states have (on average 1.5480670172965352) internal successors, (28551), 18509 states have internal predecessors, (28551), 2116 states have call successors, (2116), 832 states have call predecessors, (2116), 832 states have return successors, (2116), 2052 states have call predecessors, (2116), 2116 states have call successors, (2116) [2022-11-25 23:29:58,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21393 states to 21393 states and 32783 transitions. [2022-11-25 23:29:58,145 INFO L78 Accepts]: Start accepts. Automaton has 21393 states and 32783 transitions. Word has length 156 [2022-11-25 23:29:58,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:29:58,146 INFO L495 AbstractCegarLoop]: Abstraction has 21393 states and 32783 transitions. [2022-11-25 23:29:58,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 23:29:58,147 INFO L276 IsEmpty]: Start isEmpty. Operand 21393 states and 32783 transitions. [2022-11-25 23:29:58,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 23:29:58,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:29:58,218 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2022-11-25 23:29:58,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:29:58,218 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:29:58,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:29:58,219 INFO L85 PathProgramCache]: Analyzing trace with hash -2041185495, now seen corresponding path program 1 times [2022-11-25 23:29:58,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:29:58,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348711465] [2022-11-25 23:29:58,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:29:58,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:29:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:29:58,386 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 23:29:58,386 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:29:58,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348711465] [2022-11-25 23:29:58,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348711465] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:29:58,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:29:58,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:29:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111499509] [2022-11-25 23:29:58,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:29:58,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:29:58,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:29:58,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:29:58,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:29:58,390 INFO L87 Difference]: Start difference. First operand 21393 states and 32783 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 23:30:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:00,857 INFO L93 Difference]: Finished difference Result 60310 states and 91924 transitions. [2022-11-25 23:30:00,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:30:00,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-25 23:30:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:01,054 INFO L225 Difference]: With dead ends: 60310 [2022-11-25 23:30:01,055 INFO L226 Difference]: Without dead ends: 40563 [2022-11-25 23:30:01,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:01,112 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3463 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:01,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:30:01,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40563 states. [2022-11-25 23:30:02,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40563 to 40369. [2022-11-25 23:30:02,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40369 states, 34603 states have (on average 1.5186833511545241) internal successors, (52551), 34733 states have internal predecessors, (52551), 4100 states have call successors, (4100), 1664 states have call predecessors, (4100), 1664 states have return successors, (4100), 3972 states have call predecessors, (4100), 4100 states have call successors, (4100) [2022-11-25 23:30:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40369 states to 40369 states and 60751 transitions. [2022-11-25 23:30:03,152 INFO L78 Accepts]: Start accepts. Automaton has 40369 states and 60751 transitions. Word has length 156 [2022-11-25 23:30:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:03,153 INFO L495 AbstractCegarLoop]: Abstraction has 40369 states and 60751 transitions. [2022-11-25 23:30:03,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 23:30:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 40369 states and 60751 transitions. [2022-11-25 23:30:03,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 23:30:03,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:03,307 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2022-11-25 23:30:03,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:30:03,308 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:03,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:03,308 INFO L85 PathProgramCache]: Analyzing trace with hash 392189831, now seen corresponding path program 1 times [2022-11-25 23:30:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:03,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574314459] [2022-11-25 23:30:03,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:03,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:03,465 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 23:30:03,465 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:03,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574314459] [2022-11-25 23:30:03,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574314459] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:03,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:03,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:30:03,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351081721] [2022-11-25 23:30:03,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:03,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:30:03,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:03,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:30:03,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:03,468 INFO L87 Difference]: Start difference. First operand 40369 states and 60751 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 23:30:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:06,936 INFO L93 Difference]: Finished difference Result 116662 states and 175828 transitions. [2022-11-25 23:30:06,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:30:06,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-25 23:30:06,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:07,315 INFO L225 Difference]: With dead ends: 116662 [2022-11-25 23:30:07,316 INFO L226 Difference]: Without dead ends: 77939 [2022-11-25 23:30:07,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:07,448 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3465 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:07,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:30:07,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77939 states. [2022-11-25 23:30:11,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77939 to 77553. [2022-11-25 23:30:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77553 states, 66283 states have (on average 1.4976841724122325) internal successors, (99271), 66541 states have internal predecessors, (99271), 7940 states have call successors, (7940), 3328 states have call predecessors, (7940), 3328 states have return successors, (7940), 7684 states have call predecessors, (7940), 7940 states have call successors, (7940) [2022-11-25 23:30:12,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77553 states to 77553 states and 115151 transitions. [2022-11-25 23:30:12,052 INFO L78 Accepts]: Start accepts. Automaton has 77553 states and 115151 transitions. Word has length 156 [2022-11-25 23:30:12,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:12,053 INFO L495 AbstractCegarLoop]: Abstraction has 77553 states and 115151 transitions. [2022-11-25 23:30:12,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 23:30:12,053 INFO L276 IsEmpty]: Start isEmpty. Operand 77553 states and 115151 transitions. [2022-11-25 23:30:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 23:30:12,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:12,248 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1] [2022-11-25 23:30:12,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:30:12,248 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:12,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:12,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1403482696, now seen corresponding path program 1 times [2022-11-25 23:30:12,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:12,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782681868] [2022-11-25 23:30:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:12,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 23:30:12,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:12,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782681868] [2022-11-25 23:30:12,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782681868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:12,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:12,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:30:12,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839209102] [2022-11-25 23:30:12,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:12,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:30:12,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:12,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:30:12,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:12,360 INFO L87 Difference]: Start difference. First operand 77553 states and 115151 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 23:30:18,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:18,744 INFO L93 Difference]: Finished difference Result 227062 states and 338900 transitions. [2022-11-25 23:30:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:30:18,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-25 23:30:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:19,601 INFO L225 Difference]: With dead ends: 227062 [2022-11-25 23:30:19,601 INFO L226 Difference]: Without dead ends: 151155 [2022-11-25 23:30:19,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:30:19,883 INFO L413 NwaCegarLoop]: 3272 mSDtfsCounter, 3468 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:19,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 3452 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:30:20,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151155 states.