./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba --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 eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 01:52:42,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:52:42,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:52:42,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:52:42,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:52:42,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:52:42,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:52:42,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:52:42,046 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:52:42,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:52:42,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:52:42,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:52:42,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:52:42,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:52:42,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:52:42,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:52:42,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:52:42,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:52:42,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:52:42,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:52:42,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:52:42,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:52:42,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:52:42,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:52:42,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:52:42,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:52:42,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:52:42,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:52:42,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:52:42,071 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:52:42,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:52:42,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:52:42,073 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:52:42,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:52:42,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:52:42,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:52:42,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:52:42,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:52:42,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:52:42,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:52:42,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:52:42,081 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 01:52:42,102 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:52:42,107 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:52:42,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:52:42,108 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:52:42,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:52:42,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:52:42,109 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:52:42,110 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:52:42,110 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:52:42,110 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:52:42,110 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:52:42,111 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:52:42,111 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:52:42,111 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:52:42,111 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:52:42,112 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:52:42,112 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:52:42,112 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:52:42,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:52:42,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 01:52:42,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:52:42,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 01:52:42,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:52:42,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:52:42,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:52:42,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:52:42,116 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 01:52:42,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:52:42,117 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:52:42,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:52:42,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:52:42,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:52:42,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:52:42,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:52:42,119 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:52:42,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:52:42,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:52:42,120 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:52:42,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:52:42,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:52:42,121 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:52:42,121 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_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eebca77f45674e9c747126627d8fffbab7911c70d4e1d781272ecaec26772b5e [2022-11-22 01:52:42,405 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:52:42,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:52:42,436 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:52:42,437 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:52:42,438 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:52:42,439 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2022-11-22 01:52:45,454 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:52:46,324 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:52:46,324 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c [2022-11-22 01:52:46,399 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/data/bf0e83c7b/50a3ad0371444ddc97f8813d5943ff91/FLAGca0bf75de [2022-11-22 01:52:46,414 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/data/bf0e83c7b/50a3ad0371444ddc97f8813d5943ff91 [2022-11-22 01:52:46,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:52:46,419 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:52:46,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:52:46,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:52:46,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:52:46,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:46,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f101605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:46, skipping insertion in model container [2022-11-22 01:52:46,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:52:46" (1/1) ... [2022-11-22 01:52:46,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:52:46,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:52:48,936 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_dcebe486-3b93-4b94-a997-788cba5db610/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2022-11-22 01:52:48,979 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_dcebe486-3b93-4b94-a997-788cba5db610/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2022-11-22 01:52:49,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:52:49,301 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:52:50,545 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_dcebe486-3b93-4b94-a997-788cba5db610/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[377340,377353] [2022-11-22 01:52:50,554 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_dcebe486-3b93-4b94-a997-788cba5db610/sv-benchmarks/c/combinations/Problem05_label44+token_ring.09.cil-1.c[383339,383352] [2022-11-22 01:52:50,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:52:50,662 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:52:50,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50 WrapperNode [2022-11-22 01:52:50,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:52:50,664 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:52:50,664 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:52:50,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:52:50,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:50,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,335 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-11-22 01:52:51,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:52:51,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:52:51,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:52:51,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:52:51,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,735 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:52:51,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:52:51,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:52:51,822 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:52:51,823 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (1/1) ... [2022-11-22 01:52:51,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:52:51,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:52:51,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:52:51,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:52:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:52:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-22 01:52:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-22 01:52:51,904 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-22 01:52:51,904 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-22 01:52:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-22 01:52:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-22 01:52:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-22 01:52:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-22 01:52:51,905 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-22 01:52:51,905 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-22 01:52:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-22 01:52:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-22 01:52:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:52:51,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:52:51,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:52:52,085 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:52:52,104 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:53:01,187 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:53:03,778 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:53:03,778 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-22 01:53:03,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:03 BoogieIcfgContainer [2022-11-22 01:53:03,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:53:03,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:53:03,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:53:03,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:53:03,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:52:46" (1/3) ... [2022-11-22 01:53:03,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c66063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:53:03, skipping insertion in model container [2022-11-22 01:53:03,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:52:50" (2/3) ... [2022-11-22 01:53:03,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c66063a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:53:03, skipping insertion in model container [2022-11-22 01:53:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:53:03" (3/3) ... [2022-11-22 01:53:03,791 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.09.cil-1.c [2022-11-22 01:53:03,809 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:53:03,810 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-22 01:53:03,895 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:53:03,902 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;@37c5e381, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:53:03,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-22 01:53:03,913 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) [2022-11-22 01:53:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-22 01:53:03,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:03,929 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] [2022-11-22 01:53:03,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:03,938 INFO L85 PathProgramCache]: Analyzing trace with hash -186017883, now seen corresponding path program 1 times [2022-11-22 01:53:03,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:03,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351428261] [2022-11-22 01:53:03,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:03,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:04,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 01:53:04,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351428261] [2022-11-22 01:53:04,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351428261] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:04,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:04,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:53:04,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121923241] [2022-11-22 01:53:04,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:04,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:53:04,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:04,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:53:04,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:53:04,650 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) [2022-11-22 01:53:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:05,857 INFO L93 Difference]: Finished difference Result 3734 states and 7259 transitions. [2022-11-22 01:53:05,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:53:05,860 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 [2022-11-22 01:53:05,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:05,886 INFO L225 Difference]: With dead ends: 3734 [2022-11-22 01:53:05,886 INFO L226 Difference]: Without dead ends: 1935 [2022-11-22 01:53:05,897 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 [2022-11-22 01:53:05,902 INFO L413 NwaCegarLoop]: 3421 mSDtfsCounter, 3680 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:05,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 6756 Invalid, 692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 01:53:05,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2022-11-22 01:53:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1934. [2022-11-22 01:53:06,055 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) [2022-11-22 01:53:06,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3708 transitions. [2022-11-22 01:53:06,067 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3708 transitions. Word has length 58 [2022-11-22 01:53:06,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:06,069 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 3708 transitions. [2022-11-22 01:53:06,069 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) [2022-11-22 01:53:06,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3708 transitions. [2022-11-22 01:53:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-22 01:53:06,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:06,077 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] [2022-11-22 01:53:06,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:53:06,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:06,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:06,079 INFO L85 PathProgramCache]: Analyzing trace with hash -272451214, now seen corresponding path program 1 times [2022-11-22 01:53:06,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:06,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400031060] [2022-11-22 01:53:06,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:06,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:06,476 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:53:06,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:06,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400031060] [2022-11-22 01:53:06,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400031060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:06,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320748643] [2022-11-22 01:53:06,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:06,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:06,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:06,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:06,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:53:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:06,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:53:06,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:06,813 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-22 01:53:06,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:53:06,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320748643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:06,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:53:06,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 01:53:06,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812159635] [2022-11-22 01:53:06,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:06,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:06,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:53:06,818 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) [2022-11-22 01:53:07,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:07,351 INFO L93 Difference]: Finished difference Result 2503 states and 4585 transitions. [2022-11-22 01:53:07,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:07,352 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 [2022-11-22 01:53:07,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:07,363 INFO L225 Difference]: With dead ends: 2503 [2022-11-22 01:53:07,364 INFO L226 Difference]: Without dead ends: 2215 [2022-11-22 01:53:07,366 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 [2022-11-22 01:53:07,367 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:07,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 3472 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:53:07,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-11-22 01:53:07,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2211. [2022-11-22 01:53:07,429 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) [2022-11-22 01:53:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 4121 transitions. [2022-11-22 01:53:07,440 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 4121 transitions. Word has length 115 [2022-11-22 01:53:07,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:07,441 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 4121 transitions. [2022-11-22 01:53:07,441 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) [2022-11-22 01:53:07,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 4121 transitions. [2022-11-22 01:53:07,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-22 01:53:07,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:07,446 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] [2022-11-22 01:53:07,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:07,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:07,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:07,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash 2001997428, now seen corresponding path program 1 times [2022-11-22 01:53:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:07,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065496518] [2022-11-22 01:53:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:07,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:53:07,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:07,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065496518] [2022-11-22 01:53:07,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065496518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:07,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287662715] [2022-11-22 01:53:07,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:07,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:07,823 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:07,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:53:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:08,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:53:08,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-22 01:53:08,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:53:08,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287662715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:08,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:53:08,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 01:53:08,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087283707] [2022-11-22 01:53:08,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:08,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:08,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:08,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:08,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:53:08,138 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) [2022-11-22 01:53:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:08,678 INFO L93 Difference]: Finished difference Result 3328 states and 5836 transitions. [2022-11-22 01:53:08,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:08,679 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 [2022-11-22 01:53:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:08,694 INFO L225 Difference]: With dead ends: 3328 [2022-11-22 01:53:08,694 INFO L226 Difference]: Without dead ends: 2763 [2022-11-22 01:53:08,697 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 [2022-11-22 01:53:08,701 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3465 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:08,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:53:08,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-11-22 01:53:08,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2757. [2022-11-22 01:53:08,800 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) [2022-11-22 01:53:08,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4931 transitions. [2022-11-22 01:53:08,814 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4931 transitions. Word has length 115 [2022-11-22 01:53:08,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:08,815 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 4931 transitions. [2022-11-22 01:53:08,815 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) [2022-11-22 01:53:08,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4931 transitions. [2022-11-22 01:53:08,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-22 01:53:08,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:08,820 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] [2022-11-22 01:53:08,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:09,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:09,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:09,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash 130141430, now seen corresponding path program 1 times [2022-11-22 01:53:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:09,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000631167] [2022-11-22 01:53:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:09,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:53:09,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:09,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000631167] [2022-11-22 01:53:09,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000631167] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:09,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787974321] [2022-11-22 01:53:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:09,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:09,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:09,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:09,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 01:53:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:09,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:53:09,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:09,579 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-22 01:53:09,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:53:09,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787974321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:09,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:53:09,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 01:53:09,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658268833] [2022-11-22 01:53:09,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:09,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:09,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:09,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:09,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:53:09,584 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) [2022-11-22 01:53:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:10,289 INFO L93 Difference]: Finished difference Result 4954 states and 8288 transitions. [2022-11-22 01:53:10,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:10,289 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 [2022-11-22 01:53:10,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:10,311 INFO L225 Difference]: With dead ends: 4954 [2022-11-22 01:53:10,311 INFO L226 Difference]: Without dead ends: 3843 [2022-11-22 01:53:10,316 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 [2022-11-22 01:53:10,317 INFO L413 NwaCegarLoop]: 3290 mSDtfsCounter, 3474 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:10,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 3470 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:53:10,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2022-11-22 01:53:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3833. [2022-11-22 01:53:10,438 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) [2022-11-22 01:53:10,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 6519 transitions. [2022-11-22 01:53:10,457 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 6519 transitions. Word has length 115 [2022-11-22 01:53:10,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:10,458 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 6519 transitions. [2022-11-22 01:53:10,458 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) [2022-11-22 01:53:10,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 6519 transitions. [2022-11-22 01:53:10,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-22 01:53:10,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:10,464 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] [2022-11-22 01:53:10,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:10,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:10,671 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:10,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:10,672 INFO L85 PathProgramCache]: Analyzing trace with hash 825573556, now seen corresponding path program 1 times [2022-11-22 01:53:10,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:10,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465267496] [2022-11-22 01:53:10,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:10,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:10,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:10,825 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:53:10,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:10,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465267496] [2022-11-22 01:53:10,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465267496] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:10,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402306311] [2022-11-22 01:53:10,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:10,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:10,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:10,827 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:10,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 01:53:11,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:11,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:53:11,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:11,118 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-22 01:53:11,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:53:11,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402306311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:11,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:53:11,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 01:53:11,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857609275] [2022-11-22 01:53:11,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:11,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:11,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:53:11,121 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) [2022-11-22 01:53:11,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:11,753 INFO L93 Difference]: Finished difference Result 8158 states and 13092 transitions. [2022-11-22 01:53:11,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:11,753 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 [2022-11-22 01:53:11,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:11,782 INFO L225 Difference]: With dead ends: 8158 [2022-11-22 01:53:11,783 INFO L226 Difference]: Without dead ends: 5971 [2022-11-22 01:53:11,792 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 [2022-11-22 01:53:11,793 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:11,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:53:11,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2022-11-22 01:53:11,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5953. [2022-11-22 01:53:12,019 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) [2022-11-22 01:53:12,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 9631 transitions. [2022-11-22 01:53:12,054 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 9631 transitions. Word has length 115 [2022-11-22 01:53:12,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:12,055 INFO L495 AbstractCegarLoop]: Abstraction has 5953 states and 9631 transitions. [2022-11-22 01:53:12,056 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) [2022-11-22 01:53:12,056 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 9631 transitions. [2022-11-22 01:53:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-22 01:53:12,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:12,067 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] [2022-11-22 01:53:12,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:12,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:12,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:12,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:12,275 INFO L85 PathProgramCache]: Analyzing trace with hash 476874934, now seen corresponding path program 1 times [2022-11-22 01:53:12,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:12,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312051492] [2022-11-22 01:53:12,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:12,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:12,440 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-22 01:53:12,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:12,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312051492] [2022-11-22 01:53:12,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312051492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:12,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465961233] [2022-11-22 01:53:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:12,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:12,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:12,443 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:12,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-22 01:53:12,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:12,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 01:53:12,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 01:53:12,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 01:53:12,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465961233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:12,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 01:53:12,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 01:53:12,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769389283] [2022-11-22 01:53:12,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:12,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:12,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:12,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:12,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-22 01:53:12,742 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) [2022-11-22 01:53:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:13,500 INFO L93 Difference]: Finished difference Result 14470 states and 22500 transitions. [2022-11-22 01:53:13,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:13,501 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 [2022-11-22 01:53:13,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:13,577 INFO L225 Difference]: With dead ends: 14470 [2022-11-22 01:53:13,579 INFO L226 Difference]: Without dead ends: 10163 [2022-11-22 01:53:13,596 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 [2022-11-22 01:53:13,598 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3453 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:13,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3453 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:53:13,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2022-11-22 01:53:14,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10129. [2022-11-22 01:53:14,172 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) [2022-11-22 01:53:14,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10129 states to 10129 states and 15727 transitions. [2022-11-22 01:53:14,211 INFO L78 Accepts]: Start accepts. Automaton has 10129 states and 15727 transitions. Word has length 115 [2022-11-22 01:53:14,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:14,213 INFO L495 AbstractCegarLoop]: Abstraction has 10129 states and 15727 transitions. [2022-11-22 01:53:14,213 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) [2022-11-22 01:53:14,213 INFO L276 IsEmpty]: Start isEmpty. Operand 10129 states and 15727 transitions. [2022-11-22 01:53:14,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-22 01:53:14,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:14,231 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] [2022-11-22 01:53:14,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-22 01:53:14,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dcebe486-3b93-4b94-a997-788cba5db610/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:14,438 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:14,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1957853752, now seen corresponding path program 1 times [2022-11-22 01:53:14,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:14,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085429600] [2022-11-22 01:53:14,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:14,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-22 01:53:14,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:14,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085429600] [2022-11-22 01:53:14,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085429600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:14,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:14,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940965878] [2022-11-22 01:53:14,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:14,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:14,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:14,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:14,558 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) [2022-11-22 01:53:15,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:15,458 INFO L93 Difference]: Finished difference Result 16723 states and 25776 transitions. [2022-11-22 01:53:15,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:15,459 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 [2022-11-22 01:53:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:15,516 INFO L225 Difference]: With dead ends: 16723 [2022-11-22 01:53:15,516 INFO L226 Difference]: Without dead ends: 12401 [2022-11-22 01:53:15,534 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 [2022-11-22 01:53:15,535 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 [2022-11-22 01:53:15,535 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] [2022-11-22 01:53:15,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12401 states. [2022-11-22 01:53:16,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12401 to 11713. [2022-11-22 01:53:16,052 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) [2022-11-22 01:53:16,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11713 states to 11713 states and 18415 transitions. [2022-11-22 01:53:16,095 INFO L78 Accepts]: Start accepts. Automaton has 11713 states and 18415 transitions. Word has length 115 [2022-11-22 01:53:16,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:16,096 INFO L495 AbstractCegarLoop]: Abstraction has 11713 states and 18415 transitions. [2022-11-22 01:53:16,096 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) [2022-11-22 01:53:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 11713 states and 18415 transitions. [2022-11-22 01:53:16,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-22 01:53:16,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:16,124 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] [2022-11-22 01:53:16,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:53:16,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:16,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1694548206, now seen corresponding path program 1 times [2022-11-22 01:53:16,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:16,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089280576] [2022-11-22 01:53:16,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:16,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:16,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:16,251 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-22 01:53:16,252 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:16,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089280576] [2022-11-22 01:53:16,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089280576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:16,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:16,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:16,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732332014] [2022-11-22 01:53:16,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:16,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:16,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:16,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:16,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:16,258 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) [2022-11-22 01:53:17,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:17,902 INFO L93 Difference]: Finished difference Result 31558 states and 48788 transitions. [2022-11-22 01:53:17,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:17,913 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 [2022-11-22 01:53:17,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:18,021 INFO L225 Difference]: With dead ends: 31558 [2022-11-22 01:53:18,021 INFO L226 Difference]: Without dead ends: 21491 [2022-11-22 01:53:18,065 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 [2022-11-22 01:53:18,066 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, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:18,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3461 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 01:53:18,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21491 states. [2022-11-22 01:53:19,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21491 to 21393. [2022-11-22 01:53:19,497 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) [2022-11-22 01:53:19,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21393 states to 21393 states and 32783 transitions. [2022-11-22 01:53:19,576 INFO L78 Accepts]: Start accepts. Automaton has 21393 states and 32783 transitions. Word has length 156 [2022-11-22 01:53:19,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:19,576 INFO L495 AbstractCegarLoop]: Abstraction has 21393 states and 32783 transitions. [2022-11-22 01:53:19,577 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) [2022-11-22 01:53:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 21393 states and 32783 transitions. [2022-11-22 01:53:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-22 01:53:19,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:19,631 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] [2022-11-22 01:53:19,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 01:53:19,631 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:19,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -808105266, now seen corresponding path program 1 times [2022-11-22 01:53:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:19,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842737759] [2022-11-22 01:53:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:19,738 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-22 01:53:19,738 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:19,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842737759] [2022-11-22 01:53:19,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842737759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:19,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:19,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:19,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598012156] [2022-11-22 01:53:19,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:19,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:19,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:19,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:19,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:19,741 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) [2022-11-22 01:53:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:21,718 INFO L93 Difference]: Finished difference Result 60310 states and 91924 transitions. [2022-11-22 01:53:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:21,719 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 [2022-11-22 01:53:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:21,880 INFO L225 Difference]: With dead ends: 60310 [2022-11-22 01:53:21,881 INFO L226 Difference]: Without dead ends: 40563 [2022-11-22 01:53:21,937 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 [2022-11-22 01:53:21,940 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 [2022-11-22 01:53:21,940 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] [2022-11-22 01:53:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40563 states. [2022-11-22 01:53:23,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40563 to 40369. [2022-11-22 01:53:23,985 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) [2022-11-22 01:53:24,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40369 states to 40369 states and 60751 transitions. [2022-11-22 01:53:24,116 INFO L78 Accepts]: Start accepts. Automaton has 40369 states and 60751 transitions. Word has length 156 [2022-11-22 01:53:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:24,116 INFO L495 AbstractCegarLoop]: Abstraction has 40369 states and 60751 transitions. [2022-11-22 01:53:24,117 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) [2022-11-22 01:53:24,117 INFO L276 IsEmpty]: Start isEmpty. Operand 40369 states and 60751 transitions. [2022-11-22 01:53:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-22 01:53:24,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:24,235 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] [2022-11-22 01:53:24,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 01:53:24,235 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1998239700, now seen corresponding path program 1 times [2022-11-22 01:53:24,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:24,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618603858] [2022-11-22 01:53:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:24,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-22 01:53:24,360 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:24,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618603858] [2022-11-22 01:53:24,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618603858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:24,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:24,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:24,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887929750] [2022-11-22 01:53:24,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:24,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:24,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:24,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:24,362 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) [2022-11-22 01:53:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:28,993 INFO L93 Difference]: Finished difference Result 116662 states and 175828 transitions. [2022-11-22 01:53:28,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:28,994 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 [2022-11-22 01:53:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:29,362 INFO L225 Difference]: With dead ends: 116662 [2022-11-22 01:53:29,363 INFO L226 Difference]: Without dead ends: 77939 [2022-11-22 01:53:29,502 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 [2022-11-22 01:53:29,502 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3465 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:29,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 01:53:29,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77939 states. [2022-11-22 01:53:33,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77939 to 77553. [2022-11-22 01:53:33,342 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) [2022-11-22 01:53:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77553 states to 77553 states and 115151 transitions. [2022-11-22 01:53:33,837 INFO L78 Accepts]: Start accepts. Automaton has 77553 states and 115151 transitions. Word has length 156 [2022-11-22 01:53:33,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:33,838 INFO L495 AbstractCegarLoop]: Abstraction has 77553 states and 115151 transitions. [2022-11-22 01:53:33,838 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) [2022-11-22 01:53:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 77553 states and 115151 transitions. [2022-11-22 01:53:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-22 01:53:34,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:34,029 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] [2022-11-22 01:53:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 01:53:34,029 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:34,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1253646966, now seen corresponding path program 1 times [2022-11-22 01:53:34,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:34,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213496910] [2022-11-22 01:53:34,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:34,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-22 01:53:34,143 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:34,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213496910] [2022-11-22 01:53:34,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213496910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:53:34,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:53:34,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:53:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394958563] [2022-11-22 01:53:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:53:34,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:53:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:53:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:53:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:53:34,148 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) [2022-11-22 01:53:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:40,492 INFO L93 Difference]: Finished difference Result 227062 states and 338900 transitions. [2022-11-22 01:53:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:53:40,492 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 [2022-11-22 01:53:40,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:41,426 INFO L225 Difference]: With dead ends: 227062 [2022-11-22 01:53:41,427 INFO L226 Difference]: Without dead ends: 151155 [2022-11-22 01:53:41,741 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 [2022-11-22 01:53:41,742 INFO L413 NwaCegarLoop]: 3272 mSDtfsCounter, 3468 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:41,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 3452 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 01:53:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151155 states.