./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI --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 1a76dc897aa0702a7581955a590e68a0e3d7c15bffbb5939a80772bf70ad5d7a --- 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-5e519f3 [2022-11-03 02:20:47,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:20:47,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:20:47,382 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:20:47,383 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:20:47,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:20:47,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:20:47,395 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:20:47,397 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:20:47,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:20:47,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:20:47,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:20:47,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:20:47,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:20:47,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:20:47,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:20:47,414 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:20:47,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:20:47,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:20:47,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:20:47,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:20:47,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:20:47,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:20:47,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:20:47,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:20:47,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:20:47,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:20:47,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:20:47,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:20:47,447 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:20:47,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:20:47,449 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:20:47,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:20:47,452 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:20:47,454 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:20:47,455 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:20:47,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:20:47,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:20:47,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:20:47,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:20:47,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:20:47,460 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:20:47,510 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:20:47,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:20:47,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:20:47,512 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:20:47,513 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:20:47,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:20:47,514 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:20:47,514 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:20:47,514 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:20:47,515 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:20:47,516 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:20:47,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:20:47,517 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:20:47,517 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:20:47,517 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:20:47,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:20:47,518 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:20:47,518 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:20:47,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:20:47,519 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:20:47,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:20:47,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:20:47,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:20:47,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:20:47,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:20:47,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:20:47,521 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:20:47,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:20:47,523 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:20:47,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:20:47,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:20:47,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:20:47,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:47,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:20:47,525 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:20:47,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:20:47,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:20:47,526 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:20:47,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:20:47,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:20:47,527 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:20:47,527 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_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a76dc897aa0702a7581955a590e68a0e3d7c15bffbb5939a80772bf70ad5d7a [2022-11-03 02:20:47,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:20:47,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:20:47,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:20:47,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:20:47,856 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:20:47,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:20:47,929 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/data/685e075f0/3945a7d32e2b42038f24d2cbc14b7de9/FLAG86e3a152e [2022-11-03 02:20:48,702 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:20:48,703 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:20:48,741 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/data/685e075f0/3945a7d32e2b42038f24d2cbc14b7de9/FLAG86e3a152e [2022-11-03 02:20:48,899 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/data/685e075f0/3945a7d32e2b42038f24d2cbc14b7de9 [2022-11-03 02:20:48,902 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:20:48,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:20:48,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:48,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:20:48,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:20:48,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:48" (1/1) ... [2022-11-03 02:20:48,914 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77066bda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:48, skipping insertion in model container [2022-11-03 02:20:48,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:20:48" (1/1) ... [2022-11-03 02:20:48,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:20:49,025 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:20:49,444 WARN L230 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_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2022-11-03 02:20:49,590 WARN L230 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_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2022-11-03 02:20:49,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:50,005 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:20:50,086 WARN L230 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_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[10634,10647] [2022-11-03 02:20:50,185 WARN L230 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_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[25860,25873] [2022-11-03 02:20:50,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:20:50,374 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:20:50,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50 WrapperNode [2022-11-03 02:20:50,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:20:50,376 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:50,376 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:20:50,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:20:50,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,508 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3564 [2022-11-03 02:20:50,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:20:50,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:20:50,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:20:50,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:20:50,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,532 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,570 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,651 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:20:50,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:20:50,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:20:50,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:20:50,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (1/1) ... [2022-11-03 02:20:50,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:20:50,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:20:50,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:20:50,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ad0866c-4d6a-4a0d-a387-b1df7daa5af0/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:20:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:20:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:20:50,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:20:50,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:20:51,047 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:20:51,049 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:20:53,394 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:20:53,662 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:20:53,662 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:20:53,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:53 BoogieIcfgContainer [2022-11-03 02:20:53,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:20:53,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:20:53,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:20:53,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:20:53,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:20:48" (1/3) ... [2022-11-03 02:20:53,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a7f63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:53, skipping insertion in model container [2022-11-03 02:20:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:20:50" (2/3) ... [2022-11-03 02:20:53,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a7f63a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:20:53, skipping insertion in model container [2022-11-03 02:20:53,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:20:53" (3/3) ... [2022-11-03 02:20:53,675 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-11-03 02:20:53,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:20:53,695 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-03 02:20:53,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:20:53,824 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;@2e253b7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:20:53,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-03 02:20:53,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 666 states, 663 states have (on average 1.7873303167420815) internal successors, (1185), 665 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-03 02:20:53,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:53,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:53,868 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:53,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:53,878 INFO L85 PathProgramCache]: Analyzing trace with hash 354198095, now seen corresponding path program 1 times [2022-11-03 02:20:53,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:53,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954707948] [2022-11-03 02:20:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:53,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:54,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:54,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954707948] [2022-11-03 02:20:54,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954707948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:54,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:54,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:54,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374992600] [2022-11-03 02:20:54,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:54,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:54,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:54,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:54,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:54,427 INFO L87 Difference]: Start difference. First operand has 666 states, 663 states have (on average 1.7873303167420815) internal successors, (1185), 665 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:54,682 INFO L93 Difference]: Finished difference Result 969 states and 1683 transitions. [2022-11-03 02:20:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-11-03 02:20:54,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:54,700 INFO L225 Difference]: With dead ends: 969 [2022-11-03 02:20:54,701 INFO L226 Difference]: Without dead ends: 786 [2022-11-03 02:20:54,705 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 [2022-11-03 02:20:54,708 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 592 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1928 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:54,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1928 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:54,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-11-03 02:20:54,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 784. [2022-11-03 02:20:54,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 782 states have (on average 1.340153452685422) internal successors, (1048), 783 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1048 transitions. [2022-11-03 02:20:54,851 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1048 transitions. Word has length 62 [2022-11-03 02:20:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:54,854 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1048 transitions. [2022-11-03 02:20:54,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:54,855 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1048 transitions. [2022-11-03 02:20:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 02:20:54,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:54,862 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:54,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:20:54,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:54,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:54,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1907491894, now seen corresponding path program 1 times [2022-11-03 02:20:54,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:54,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025086617] [2022-11-03 02:20:54,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:54,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:55,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:55,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:55,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025086617] [2022-11-03 02:20:55,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025086617] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:55,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:55,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:55,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068241289] [2022-11-03 02:20:55,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:55,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:55,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:55,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:55,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:55,080 INFO L87 Difference]: Start difference. First operand 784 states and 1048 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:55,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:55,335 INFO L93 Difference]: Finished difference Result 1309 states and 1745 transitions. [2022-11-03 02:20:55,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:55,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-03 02:20:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:55,343 INFO L225 Difference]: With dead ends: 1309 [2022-11-03 02:20:55,344 INFO L226 Difference]: Without dead ends: 1120 [2022-11-03 02:20:55,349 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 [2022-11-03 02:20:55,351 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 502 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1533 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:55,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1533 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:20:55,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2022-11-03 02:20:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1116. [2022-11-03 02:20:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1116 states, 1114 states have (on average 1.3204667863554758) internal successors, (1471), 1115 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1116 states to 1116 states and 1471 transitions. [2022-11-03 02:20:55,446 INFO L78 Accepts]: Start accepts. Automaton has 1116 states and 1471 transitions. Word has length 63 [2022-11-03 02:20:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:55,447 INFO L495 AbstractCegarLoop]: Abstraction has 1116 states and 1471 transitions. [2022-11-03 02:20:55,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1116 states and 1471 transitions. [2022-11-03 02:20:55,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 02:20:55,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:55,458 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:55,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:20:55,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:55,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash -715190064, now seen corresponding path program 1 times [2022-11-03 02:20:55,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:55,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313740142] [2022-11-03 02:20:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:55,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:55,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:55,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:55,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313740142] [2022-11-03 02:20:55,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313740142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:55,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:55,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:20:55,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326372412] [2022-11-03 02:20:55,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:55,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:55,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:55,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:55,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:55,681 INFO L87 Difference]: Start difference. First operand 1116 states and 1471 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:56,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:56,396 INFO L93 Difference]: Finished difference Result 2179 states and 2938 transitions. [2022-11-03 02:20:56,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:20:56,397 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-11-03 02:20:56,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:56,404 INFO L225 Difference]: With dead ends: 2179 [2022-11-03 02:20:56,404 INFO L226 Difference]: Without dead ends: 1287 [2022-11-03 02:20:56,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:56,415 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 2242 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2242 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:56,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2242 Valid, 509 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:20:56,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1287 states. [2022-11-03 02:20:56,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1287 to 1285. [2022-11-03 02:20:56,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1285 states, 1283 states have (on average 1.3468433359314107) internal successors, (1728), 1284 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1285 states to 1285 states and 1728 transitions. [2022-11-03 02:20:56,528 INFO L78 Accepts]: Start accepts. Automaton has 1285 states and 1728 transitions. Word has length 63 [2022-11-03 02:20:56,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:56,529 INFO L495 AbstractCegarLoop]: Abstraction has 1285 states and 1728 transitions. [2022-11-03 02:20:56,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:56,530 INFO L276 IsEmpty]: Start isEmpty. Operand 1285 states and 1728 transitions. [2022-11-03 02:20:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-03 02:20:56,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:56,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:56,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:20:56,550 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:56,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:56,551 INFO L85 PathProgramCache]: Analyzing trace with hash -366683150, now seen corresponding path program 1 times [2022-11-03 02:20:56,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:56,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969712413] [2022-11-03 02:20:56,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:56,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:56,652 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:56,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969712413] [2022-11-03 02:20:56,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969712413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:56,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:56,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:56,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506281260] [2022-11-03 02:20:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:56,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:56,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:56,654 INFO L87 Difference]: Start difference. First operand 1285 states and 1728 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:56,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:56,921 INFO L93 Difference]: Finished difference Result 2656 states and 3627 transitions. [2022-11-03 02:20:56,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:56,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-11-03 02:20:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:56,930 INFO L225 Difference]: With dead ends: 2656 [2022-11-03 02:20:56,930 INFO L226 Difference]: Without dead ends: 1976 [2022-11-03 02:20:56,932 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 [2022-11-03 02:20:56,941 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 540 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:56,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 1333 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:56,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2022-11-03 02:20:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1974. [2022-11-03 02:20:57,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1972 states have (on average 1.3443204868154157) internal successors, (2651), 1973 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:57,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2651 transitions. [2022-11-03 02:20:57,148 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2651 transitions. Word has length 64 [2022-11-03 02:20:57,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:57,149 INFO L495 AbstractCegarLoop]: Abstraction has 1974 states and 2651 transitions. [2022-11-03 02:20:57,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:57,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2651 transitions. [2022-11-03 02:20:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:20:57,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:57,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:57,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:20:57,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:57,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1303921466, now seen corresponding path program 1 times [2022-11-03 02:20:57,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:57,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492162311] [2022-11-03 02:20:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:57,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:57,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:57,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492162311] [2022-11-03 02:20:57,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492162311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:57,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:57,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:20:57,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565206134] [2022-11-03 02:20:57,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:20:57,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:20:57,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:20:57,240 INFO L87 Difference]: Start difference. First operand 1974 states and 2651 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:57,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:57,624 INFO L93 Difference]: Finished difference Result 4165 states and 5661 transitions. [2022-11-03 02:20:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:20:57,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 02:20:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:57,634 INFO L225 Difference]: With dead ends: 4165 [2022-11-03 02:20:57,635 INFO L226 Difference]: Without dead ends: 2975 [2022-11-03 02:20:57,637 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 [2022-11-03 02:20:57,637 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 353 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:57,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1260 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:20:57,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2975 states. [2022-11-03 02:20:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2975 to 2971. [2022-11-03 02:20:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2969 states have (on average 1.3391714381946784) internal successors, (3976), 2970 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:57,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 3976 transitions. [2022-11-03 02:20:57,964 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 3976 transitions. Word has length 65 [2022-11-03 02:20:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:57,966 INFO L495 AbstractCegarLoop]: Abstraction has 2971 states and 3976 transitions. [2022-11-03 02:20:57,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:57,967 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 3976 transitions. [2022-11-03 02:20:57,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-03 02:20:57,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:57,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:57,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:20:57,972 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:57,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:57,972 INFO L85 PathProgramCache]: Analyzing trace with hash -118541293, now seen corresponding path program 1 times [2022-11-03 02:20:57,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:57,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230776536] [2022-11-03 02:20:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:57,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:58,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:58,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:58,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230776536] [2022-11-03 02:20:58,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230776536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:58,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:58,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:20:58,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631671942] [2022-11-03 02:20:58,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:58,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:20:58,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:58,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:20:58,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:20:58,155 INFO L87 Difference]: Start difference. First operand 2971 states and 3976 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:59,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:20:59,235 INFO L93 Difference]: Finished difference Result 6973 states and 9421 transitions. [2022-11-03 02:20:59,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:20:59,235 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-11-03 02:20:59,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:20:59,251 INFO L225 Difference]: With dead ends: 6973 [2022-11-03 02:20:59,251 INFO L226 Difference]: Without dead ends: 4336 [2022-11-03 02:20:59,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:59,257 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1963 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1963 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:20:59,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1963 Valid, 443 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:20:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2022-11-03 02:20:59,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4332. [2022-11-03 02:20:59,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4332 states, 4330 states have (on average 1.3420323325635104) internal successors, (5811), 4331 states have internal predecessors, (5811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:59,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4332 states to 4332 states and 5811 transitions. [2022-11-03 02:20:59,764 INFO L78 Accepts]: Start accepts. Automaton has 4332 states and 5811 transitions. Word has length 65 [2022-11-03 02:20:59,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:20:59,764 INFO L495 AbstractCegarLoop]: Abstraction has 4332 states and 5811 transitions. [2022-11-03 02:20:59,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:20:59,765 INFO L276 IsEmpty]: Start isEmpty. Operand 4332 states and 5811 transitions. [2022-11-03 02:20:59,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:20:59,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:20:59,770 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:20:59,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:20:59,770 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:20:59,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:20:59,771 INFO L85 PathProgramCache]: Analyzing trace with hash -169263787, now seen corresponding path program 1 times [2022-11-03 02:20:59,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:20:59,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058053686] [2022-11-03 02:20:59,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:20:59,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:20:59,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:20:59,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:20:59,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:20:59,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058053686] [2022-11-03 02:20:59,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058053686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:20:59,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:20:59,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:20:59,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13181945] [2022-11-03 02:20:59,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:20:59,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:20:59,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:20:59,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:20:59,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:20:59,928 INFO L87 Difference]: Start difference. First operand 4332 states and 5811 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:02,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:02,948 INFO L93 Difference]: Finished difference Result 16471 states and 22596 transitions. [2022-11-03 02:21:02,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:21:02,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 02:21:02,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:03,029 INFO L225 Difference]: With dead ends: 16471 [2022-11-03 02:21:03,030 INFO L226 Difference]: Without dead ends: 15100 [2022-11-03 02:21:03,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:21:03,038 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 3912 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3912 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:03,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3912 Valid, 864 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:21:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15100 states. [2022-11-03 02:21:03,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15100 to 4356. [2022-11-03 02:21:03,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 4354 states have (on average 1.3419843821773083) internal successors, (5843), 4355 states have internal predecessors, (5843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:03,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 5843 transitions. [2022-11-03 02:21:03,915 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 5843 transitions. Word has length 66 [2022-11-03 02:21:03,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:03,915 INFO L495 AbstractCegarLoop]: Abstraction has 4356 states and 5843 transitions. [2022-11-03 02:21:03,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:03,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 5843 transitions. [2022-11-03 02:21:03,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-03 02:21:03,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:03,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:03,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:21:03,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:03,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:03,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1484472013, now seen corresponding path program 1 times [2022-11-03 02:21:03,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:03,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607530825] [2022-11-03 02:21:03,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:03,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:04,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:04,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:04,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607530825] [2022-11-03 02:21:04,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607530825] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:04,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:04,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:04,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400288126] [2022-11-03 02:21:04,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:04,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:04,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:04,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:04,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:04,077 INFO L87 Difference]: Start difference. First operand 4356 states and 5843 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:05,631 INFO L93 Difference]: Finished difference Result 11231 states and 15172 transitions. [2022-11-03 02:21:05,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:05,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-03 02:21:05,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:05,657 INFO L225 Difference]: With dead ends: 11231 [2022-11-03 02:21:05,658 INFO L226 Difference]: Without dead ends: 7184 [2022-11-03 02:21:05,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:05,666 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1976 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:05,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 478 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:21:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2022-11-03 02:21:06,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 5652. [2022-11-03 02:21:06,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5650 states have (on average 1.3483185840707965) internal successors, (7618), 5651 states have internal predecessors, (7618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:06,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 7618 transitions. [2022-11-03 02:21:06,769 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 7618 transitions. Word has length 66 [2022-11-03 02:21:06,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:06,769 INFO L495 AbstractCegarLoop]: Abstraction has 5652 states and 7618 transitions. [2022-11-03 02:21:06,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:06,770 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 7618 transitions. [2022-11-03 02:21:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:21:06,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:06,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:06,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:21:06,775 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:06,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:06,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1411280257, now seen corresponding path program 1 times [2022-11-03 02:21:06,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:06,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751779070] [2022-11-03 02:21:06,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:06,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:06,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:06,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:06,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751779070] [2022-11-03 02:21:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751779070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:06,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:06,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:21:06,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617566038] [2022-11-03 02:21:06,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:21:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:06,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:21:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:21:06,902 INFO L87 Difference]: Start difference. First operand 5652 states and 7618 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:08,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:08,936 INFO L93 Difference]: Finished difference Result 14963 states and 20215 transitions. [2022-11-03 02:21:08,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:21:08,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-03 02:21:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:08,959 INFO L225 Difference]: With dead ends: 14963 [2022-11-03 02:21:08,959 INFO L226 Difference]: Without dead ends: 9591 [2022-11-03 02:21:08,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:08,967 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 1814 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:08,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 399 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:21:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9591 states. [2022-11-03 02:21:10,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9591 to 9587. [2022-11-03 02:21:10,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9587 states, 9585 states have (on average 1.3387584767866458) internal successors, (12832), 9586 states have internal predecessors, (12832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9587 states to 9587 states and 12832 transitions. [2022-11-03 02:21:10,385 INFO L78 Accepts]: Start accepts. Automaton has 9587 states and 12832 transitions. Word has length 67 [2022-11-03 02:21:10,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:10,385 INFO L495 AbstractCegarLoop]: Abstraction has 9587 states and 12832 transitions. [2022-11-03 02:21:10,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:10,386 INFO L276 IsEmpty]: Start isEmpty. Operand 9587 states and 12832 transitions. [2022-11-03 02:21:10,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-03 02:21:10,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:10,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:10,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:21:10,392 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1696216302, now seen corresponding path program 1 times [2022-11-03 02:21:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:10,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084146931] [2022-11-03 02:21:10,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:10,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:10,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:10,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:10,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084146931] [2022-11-03 02:21:10,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084146931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:10,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:10,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:10,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59935978] [2022-11-03 02:21:10,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:10,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:21:10,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:10,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:21:10,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:10,550 INFO L87 Difference]: Start difference. First operand 9587 states and 12832 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:16,891 INFO L93 Difference]: Finished difference Result 37860 states and 50655 transitions. [2022-11-03 02:21:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:21:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-11-03 02:21:16,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:16,975 INFO L225 Difference]: With dead ends: 37860 [2022-11-03 02:21:16,976 INFO L226 Difference]: Without dead ends: 33575 [2022-11-03 02:21:16,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:21:16,989 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 3399 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:16,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3399 Valid, 795 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:21:17,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33575 states. [2022-11-03 02:21:18,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33575 to 9615. [2022-11-03 02:21:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9615 states, 9613 states have (on average 1.338603973785499) internal successors, (12868), 9614 states have internal predecessors, (12868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:18,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9615 states to 9615 states and 12868 transitions. [2022-11-03 02:21:18,912 INFO L78 Accepts]: Start accepts. Automaton has 9615 states and 12868 transitions. Word has length 67 [2022-11-03 02:21:18,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:18,912 INFO L495 AbstractCegarLoop]: Abstraction has 9615 states and 12868 transitions. [2022-11-03 02:21:18,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 9615 states and 12868 transitions. [2022-11-03 02:21:18,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-03 02:21:18,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:18,918 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:18,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:21:18,919 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:18,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1850748370, now seen corresponding path program 1 times [2022-11-03 02:21:18,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:18,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485169826] [2022-11-03 02:21:18,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:18,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:19,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:19,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:19,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485169826] [2022-11-03 02:21:19,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485169826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:19,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:19,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:21:19,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305868591] [2022-11-03 02:21:19,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:19,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:21:19,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:19,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:21:19,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:21:19,069 INFO L87 Difference]: Start difference. First operand 9615 states and 12868 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:28,647 INFO L93 Difference]: Finished difference Result 46133 states and 62477 transitions. [2022-11-03 02:21:28,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:21:28,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-11-03 02:21:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:28,750 INFO L225 Difference]: With dead ends: 46133 [2022-11-03 02:21:28,750 INFO L226 Difference]: Without dead ends: 42123 [2022-11-03 02:21:28,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:21:28,768 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 3457 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3457 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:28,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3457 Valid, 856 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:21:28,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42123 states. [2022-11-03 02:21:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42123 to 9712. [2022-11-03 02:21:31,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 9710 states have (on average 1.3385169927909373) internal successors, (12997), 9711 states have internal predecessors, (12997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 12997 transitions. [2022-11-03 02:21:31,287 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 12997 transitions. Word has length 68 [2022-11-03 02:21:31,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:31,288 INFO L495 AbstractCegarLoop]: Abstraction has 9712 states and 12997 transitions. [2022-11-03 02:21:31,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:31,288 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 12997 transitions. [2022-11-03 02:21:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:21:31,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:31,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:31,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:21:31,293 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:31,294 INFO L85 PathProgramCache]: Analyzing trace with hash -258674765, now seen corresponding path program 1 times [2022-11-03 02:21:31,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:31,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390727870] [2022-11-03 02:21:31,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:31,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:31,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:31,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390727870] [2022-11-03 02:21:31,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390727870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:31,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:31,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:21:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918323456] [2022-11-03 02:21:31,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:31,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:21:31,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:21:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:21:31,656 INFO L87 Difference]: Start difference. First operand 9712 states and 12997 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:40,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:40,956 INFO L93 Difference]: Finished difference Result 33163 states and 44103 transitions. [2022-11-03 02:21:40,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 02:21:40,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-03 02:21:40,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:41,012 INFO L225 Difference]: With dead ends: 33163 [2022-11-03 02:21:41,013 INFO L226 Difference]: Without dead ends: 30640 [2022-11-03 02:21:41,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:21:41,026 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 2466 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 2076 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2466 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:41,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2466 Valid, 2172 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2076 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:21:41,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30640 states. [2022-11-03 02:21:43,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30640 to 9712. [2022-11-03 02:21:43,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9712 states, 9710 states have (on average 1.3383110195674561) internal successors, (12995), 9711 states have internal predecessors, (12995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9712 states to 9712 states and 12995 transitions. [2022-11-03 02:21:43,576 INFO L78 Accepts]: Start accepts. Automaton has 9712 states and 12995 transitions. Word has length 69 [2022-11-03 02:21:43,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:43,576 INFO L495 AbstractCegarLoop]: Abstraction has 9712 states and 12995 transitions. [2022-11-03 02:21:43,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:43,577 INFO L276 IsEmpty]: Start isEmpty. Operand 9712 states and 12995 transitions. [2022-11-03 02:21:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-03 02:21:43,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:43,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:43,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:21:43,582 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:43,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:43,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1238363246, now seen corresponding path program 1 times [2022-11-03 02:21:43,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:43,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337902856] [2022-11-03 02:21:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:43,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:43,983 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:43,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337902856] [2022-11-03 02:21:43,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337902856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:43,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:43,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:21:43,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502828927] [2022-11-03 02:21:43,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:43,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:21:43,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:43,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:21:43,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:21:43,985 INFO L87 Difference]: Start difference. First operand 9712 states and 12995 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:21:51,813 INFO L93 Difference]: Finished difference Result 29566 states and 39659 transitions. [2022-11-03 02:21:51,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:21:51,813 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-03 02:21:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:21:51,851 INFO L225 Difference]: With dead ends: 29566 [2022-11-03 02:21:51,851 INFO L226 Difference]: Without dead ends: 22036 [2022-11-03 02:21:51,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:21:51,867 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 2160 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2160 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 1491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:21:51,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2160 Valid, 1615 Invalid, 1491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:21:51,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22036 states. [2022-11-03 02:21:54,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22036 to 9708. [2022-11-03 02:21:54,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9708 states, 9706 states have (on average 1.33803832680816) internal successors, (12987), 9707 states have internal predecessors, (12987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:54,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9708 states to 9708 states and 12987 transitions. [2022-11-03 02:21:54,941 INFO L78 Accepts]: Start accepts. Automaton has 9708 states and 12987 transitions. Word has length 69 [2022-11-03 02:21:54,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:21:54,941 INFO L495 AbstractCegarLoop]: Abstraction has 9708 states and 12987 transitions. [2022-11-03 02:21:54,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:21:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 9708 states and 12987 transitions. [2022-11-03 02:21:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:21:54,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:21:54,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:21:54,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:21:54,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:21:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:21:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1327890955, now seen corresponding path program 1 times [2022-11-03 02:21:54,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:21:54,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225010312] [2022-11-03 02:21:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:21:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:21:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:21:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:21:55,734 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:21:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225010312] [2022-11-03 02:21:55,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225010312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:21:55,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:21:55,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:21:55,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133288482] [2022-11-03 02:21:55,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:21:55,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:21:55,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:21:55,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:21:55,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:21:55,736 INFO L87 Difference]: Start difference. First operand 9708 states and 12987 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:08,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:08,723 INFO L93 Difference]: Finished difference Result 44526 states and 60103 transitions. [2022-11-03 02:22:08,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 02:22:08,724 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-03 02:22:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:08,779 INFO L225 Difference]: With dead ends: 44526 [2022-11-03 02:22:08,779 INFO L226 Difference]: Without dead ends: 36872 [2022-11-03 02:22:08,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:22:08,797 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 2024 mSDsluCounter, 3867 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 4580 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:08,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 4580 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:22:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36872 states. [2022-11-03 02:22:12,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36872 to 9568. [2022-11-03 02:22:12,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9568 states, 9566 states have (on average 1.3385950240434874) internal successors, (12805), 9567 states have internal predecessors, (12805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:12,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 12805 transitions. [2022-11-03 02:22:12,362 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 12805 transitions. Word has length 70 [2022-11-03 02:22:12,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:12,362 INFO L495 AbstractCegarLoop]: Abstraction has 9568 states and 12805 transitions. [2022-11-03 02:22:12,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 10 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:12,363 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 12805 transitions. [2022-11-03 02:22:12,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:22:12,368 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:12,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:12,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-03 02:22:12,368 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:12,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1786596526, now seen corresponding path program 1 times [2022-11-03 02:22:12,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:12,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546042471] [2022-11-03 02:22:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:12,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:12,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:12,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546042471] [2022-11-03 02:22:12,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546042471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:12,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:12,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:22:12,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324710033] [2022-11-03 02:22:12,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:22:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:22:12,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:22:12,716 INFO L87 Difference]: Start difference. First operand 9568 states and 12805 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:22:23,114 INFO L93 Difference]: Finished difference Result 31436 states and 42180 transitions. [2022-11-03 02:22:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:22:23,115 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-03 02:22:23,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:22:23,147 INFO L225 Difference]: With dead ends: 31436 [2022-11-03 02:22:23,147 INFO L226 Difference]: Without dead ends: 23872 [2022-11-03 02:22:23,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:22:23,156 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1887 mSDsluCounter, 1426 mSDsCounter, 0 mSdLazyCounter, 1539 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1887 SdHoareTripleChecker+Valid, 1847 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:22:23,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1887 Valid, 1847 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1539 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 02:22:23,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23872 states. [2022-11-03 02:22:26,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23872 to 9548. [2022-11-03 02:22:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9548 states, 9546 states have (on average 1.3380473496752567) internal successors, (12773), 9547 states have internal predecessors, (12773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:26,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9548 states to 9548 states and 12773 transitions. [2022-11-03 02:22:26,964 INFO L78 Accepts]: Start accepts. Automaton has 9548 states and 12773 transitions. Word has length 70 [2022-11-03 02:22:26,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:22:26,964 INFO L495 AbstractCegarLoop]: Abstraction has 9548 states and 12773 transitions. [2022-11-03 02:22:26,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:22:26,965 INFO L276 IsEmpty]: Start isEmpty. Operand 9548 states and 12773 transitions. [2022-11-03 02:22:26,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:22:26,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:22:26,970 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:22:26,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-03 02:22:26,970 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:22:26,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:22:26,971 INFO L85 PathProgramCache]: Analyzing trace with hash -926620498, now seen corresponding path program 1 times [2022-11-03 02:22:26,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:22:26,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42333666] [2022-11-03 02:22:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:22:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:22:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:22:27,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:22:27,745 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:22:27,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42333666] [2022-11-03 02:22:27,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42333666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:22:27,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:22:27,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 02:22:27,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004404958] [2022-11-03 02:22:27,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:22:27,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:22:27,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:22:27,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:22:27,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:22:27,747 INFO L87 Difference]: Start difference. First operand 9548 states and 12773 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:05,711 INFO L93 Difference]: Finished difference Result 78628 states and 105699 transitions. [2022-11-03 02:23:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-03 02:23:05,712 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-03 02:23:05,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:05,837 INFO L225 Difference]: With dead ends: 78628 [2022-11-03 02:23:05,837 INFO L226 Difference]: Without dead ends: 70900 [2022-11-03 02:23:05,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=429, Invalid=1551, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 02:23:05,855 INFO L413 NwaCegarLoop]: 1085 mSDtfsCounter, 5609 mSDsluCounter, 6551 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5609 SdHoareTripleChecker+Valid, 7404 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:05,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5609 Valid, 7404 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:23:05,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70900 states. [2022-11-03 02:23:11,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70900 to 9338. [2022-11-03 02:23:11,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9338 states, 9336 states have (on average 1.338796058269066) internal successors, (12499), 9337 states have internal predecessors, (12499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9338 states to 9338 states and 12499 transitions. [2022-11-03 02:23:11,311 INFO L78 Accepts]: Start accepts. Automaton has 9338 states and 12499 transitions. Word has length 70 [2022-11-03 02:23:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:11,311 INFO L495 AbstractCegarLoop]: Abstraction has 9338 states and 12499 transitions. [2022-11-03 02:23:11,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 13 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 9338 states and 12499 transitions. [2022-11-03 02:23:11,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-03 02:23:11,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:11,317 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:11,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-03 02:23:11,318 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:11,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:11,318 INFO L85 PathProgramCache]: Analyzing trace with hash -869291000, now seen corresponding path program 1 times [2022-11-03 02:23:11,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:11,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848412384] [2022-11-03 02:23:11,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:11,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:11,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:23:11,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:11,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848412384] [2022-11-03 02:23:11,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848412384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:11,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:11,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:23:11,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552365874] [2022-11-03 02:23:11,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:11,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:23:11,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:11,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:23:11,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:23:11,455 INFO L87 Difference]: Start difference. First operand 9338 states and 12499 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:35,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:35,477 INFO L93 Difference]: Finished difference Result 40678 states and 54828 transitions. [2022-11-03 02:23:35,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:23:35,477 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-11-03 02:23:35,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:35,531 INFO L225 Difference]: With dead ends: 40678 [2022-11-03 02:23:35,531 INFO L226 Difference]: Without dead ends: 36832 [2022-11-03 02:23:35,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-03 02:23:35,542 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 2360 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:35,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 878 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:23:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36832 states. [2022-11-03 02:23:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36832 to 9409. [2022-11-03 02:23:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9409 states, 9407 states have (on average 1.3392154778356542) internal successors, (12598), 9408 states have internal predecessors, (12598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9409 states to 9409 states and 12598 transitions. [2022-11-03 02:23:40,864 INFO L78 Accepts]: Start accepts. Automaton has 9409 states and 12598 transitions. Word has length 70 [2022-11-03 02:23:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:40,865 INFO L495 AbstractCegarLoop]: Abstraction has 9409 states and 12598 transitions. [2022-11-03 02:23:40,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:23:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 9409 states and 12598 transitions. [2022-11-03 02:23:40,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:23:40,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:40,869 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:40,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-03 02:23:40,870 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:40,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:40,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1664399330, now seen corresponding path program 1 times [2022-11-03 02:23:40,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:40,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528391159] [2022-11-03 02:23:40,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:40,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:23:41,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:41,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528391159] [2022-11-03 02:23:41,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528391159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:41,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:41,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 02:23:41,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179382168] [2022-11-03 02:23:41,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:41,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:23:41,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:41,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:23:41,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:23:41,779 INFO L87 Difference]: Start difference. First operand 9409 states and 12598 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:28,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:28,601 INFO L93 Difference]: Finished difference Result 69304 states and 93241 transitions. [2022-11-03 02:24:28,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 02:24:28,602 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-03 02:24:28,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:28,699 INFO L225 Difference]: With dead ends: 69304 [2022-11-03 02:24:28,699 INFO L226 Difference]: Without dead ends: 61718 [2022-11-03 02:24:28,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=345, Invalid=1215, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 02:24:28,716 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 3790 mSDsluCounter, 8452 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3790 SdHoareTripleChecker+Valid, 9417 SdHoareTripleChecker+Invalid, 1580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:28,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3790 Valid, 9417 Invalid, 1580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-03 02:24:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61718 states. [2022-11-03 02:24:35,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61718 to 9345. [2022-11-03 02:24:35,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9345 states, 9344 states have (on average 1.3383989726027397) internal successors, (12506), 9344 states have internal predecessors, (12506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:35,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9345 states to 9345 states and 12506 transitions. [2022-11-03 02:24:35,029 INFO L78 Accepts]: Start accepts. Automaton has 9345 states and 12506 transitions. Word has length 71 [2022-11-03 02:24:35,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:35,029 INFO L495 AbstractCegarLoop]: Abstraction has 9345 states and 12506 transitions. [2022-11-03 02:24:35,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 13 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:24:35,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9345 states and 12506 transitions. [2022-11-03 02:24:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-03 02:24:35,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:35,032 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:35,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-03 02:24:35,033 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:35,033 INFO L85 PathProgramCache]: Analyzing trace with hash -70988118, now seen corresponding path program 1 times [2022-11-03 02:24:35,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:35,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758289407] [2022-11-03 02:24:35,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:35,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:35,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:35,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:24:35,341 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:35,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758289407] [2022-11-03 02:24:35,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758289407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:35,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:35,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:24:35,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859002236] [2022-11-03 02:24:35,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:35,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:24:35,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:35,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:24:35,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:35,343 INFO L87 Difference]: Start difference. First operand 9345 states and 12506 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:00,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:00,256 INFO L93 Difference]: Finished difference Result 37690 states and 50601 transitions. [2022-11-03 02:25:00,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:25:00,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-03 02:25:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:00,293 INFO L225 Difference]: With dead ends: 37690 [2022-11-03 02:25:00,293 INFO L226 Difference]: Without dead ends: 29918 [2022-11-03 02:25:00,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:25:00,302 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 2170 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:00,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2170 Valid, 2091 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 02:25:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29918 states. [2022-11-03 02:25:06,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29918 to 9220. [2022-11-03 02:25:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9220 states, 9219 states have (on average 1.3381060852587048) internal successors, (12336), 9219 states have internal predecessors, (12336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9220 states to 9220 states and 12336 transitions. [2022-11-03 02:25:06,996 INFO L78 Accepts]: Start accepts. Automaton has 9220 states and 12336 transitions. Word has length 71 [2022-11-03 02:25:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:06,996 INFO L495 AbstractCegarLoop]: Abstraction has 9220 states and 12336 transitions. [2022-11-03 02:25:06,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:06,997 INFO L276 IsEmpty]: Start isEmpty. Operand 9220 states and 12336 transitions. [2022-11-03 02:25:06,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-03 02:25:07,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:07,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:07,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-03 02:25:07,000 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:07,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:07,000 INFO L85 PathProgramCache]: Analyzing trace with hash 381104671, now seen corresponding path program 1 times [2022-11-03 02:25:07,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:07,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715097063] [2022-11-03 02:25:07,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:07,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:07,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:07,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:07,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715097063] [2022-11-03 02:25:07,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715097063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:07,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:07,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:25:07,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904413195] [2022-11-03 02:25:07,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:25:07,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:25:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:25:07,707 INFO L87 Difference]: Start difference. First operand 9220 states and 12336 transitions. Second operand has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:32,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:32,606 INFO L93 Difference]: Finished difference Result 30625 states and 41168 transitions. [2022-11-03 02:25:32,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:25:32,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-03 02:25:32,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:32,645 INFO L225 Difference]: With dead ends: 30625 [2022-11-03 02:25:32,645 INFO L226 Difference]: Without dead ends: 26763 [2022-11-03 02:25:32,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:25:32,652 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 2296 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 3078 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:32,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 3078 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-03 02:25:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26763 states. [2022-11-03 02:25:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26763 to 9220. [2022-11-03 02:25:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9220 states, 9219 states have (on average 1.3379976136240372) internal successors, (12335), 9219 states have internal predecessors, (12335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9220 states to 9220 states and 12335 transitions. [2022-11-03 02:25:39,380 INFO L78 Accepts]: Start accepts. Automaton has 9220 states and 12335 transitions. Word has length 72 [2022-11-03 02:25:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:39,380 INFO L495 AbstractCegarLoop]: Abstraction has 9220 states and 12335 transitions. [2022-11-03 02:25:39,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.0) internal successors, (72), 11 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:39,381 INFO L276 IsEmpty]: Start isEmpty. Operand 9220 states and 12335 transitions. [2022-11-03 02:25:39,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:25:39,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:39,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:39,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-03 02:25:39,385 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:39,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:39,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1376608012, now seen corresponding path program 1 times [2022-11-03 02:25:39,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:39,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682037249] [2022-11-03 02:25:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:39,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:39,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:39,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682037249] [2022-11-03 02:25:39,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682037249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:39,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:39,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:39,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959436050] [2022-11-03 02:25:39,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:39,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:39,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:39,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:39,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:39,456 INFO L87 Difference]: Start difference. First operand 9220 states and 12335 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:46,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:46,644 INFO L93 Difference]: Finished difference Result 13357 states and 17911 transitions. [2022-11-03 02:25:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:25:46,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-03 02:25:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:46,659 INFO L225 Difference]: With dead ends: 13357 [2022-11-03 02:25:46,659 INFO L226 Difference]: Without dead ends: 9222 [2022-11-03 02:25:46,664 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 [2022-11-03 02:25:46,665 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 276 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:46,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1077 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:25:46,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9222 states. [2022-11-03 02:25:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9222 to 9220. [2022-11-03 02:25:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9220 states, 9219 states have (on average 1.325740318906606) internal successors, (12222), 9219 states have internal predecessors, (12222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:53,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9220 states to 9220 states and 12222 transitions. [2022-11-03 02:25:53,575 INFO L78 Accepts]: Start accepts. Automaton has 9220 states and 12222 transitions. Word has length 73 [2022-11-03 02:25:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:53,575 INFO L495 AbstractCegarLoop]: Abstraction has 9220 states and 12222 transitions. [2022-11-03 02:25:53,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:25:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9220 states and 12222 transitions. [2022-11-03 02:25:53,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-03 02:25:53,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:53,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:53,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-03 02:25:53,580 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:53,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:53,581 INFO L85 PathProgramCache]: Analyzing trace with hash -583656971, now seen corresponding path program 1 times [2022-11-03 02:25:53,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:53,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535067947] [2022-11-03 02:25:53,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:53,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:53,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:25:53,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:53,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535067947] [2022-11-03 02:25:53,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535067947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:53,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:53,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:25:53,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624513367] [2022-11-03 02:25:53,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:53,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:25:53,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:25:53,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:25:53,642 INFO L87 Difference]: Start difference. First operand 9220 states and 12222 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:04,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:04,353 INFO L93 Difference]: Finished difference Result 17148 states and 22747 transitions. [2022-11-03 02:26:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:04,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-11-03 02:26:04,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:04,369 INFO L225 Difference]: With dead ends: 17148 [2022-11-03 02:26:04,369 INFO L226 Difference]: Without dead ends: 12657 [2022-11-03 02:26:04,373 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 [2022-11-03 02:26:04,374 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 384 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:04,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 488 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:26:04,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12657 states. [2022-11-03 02:26:14,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12657 to 12655. [2022-11-03 02:26:14,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12655 states, 12654 states have (on average 1.3250355618776672) internal successors, (16767), 12654 states have internal predecessors, (16767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:14,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12655 states to 12655 states and 16767 transitions. [2022-11-03 02:26:14,498 INFO L78 Accepts]: Start accepts. Automaton has 12655 states and 16767 transitions. Word has length 73 [2022-11-03 02:26:14,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:14,498 INFO L495 AbstractCegarLoop]: Abstraction has 12655 states and 16767 transitions. [2022-11-03 02:26:14,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:14,498 INFO L276 IsEmpty]: Start isEmpty. Operand 12655 states and 16767 transitions. [2022-11-03 02:26:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:26:14,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:14,502 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:14,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-03 02:26:14,502 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1055601409, now seen corresponding path program 1 times [2022-11-03 02:26:14,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:14,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033097142] [2022-11-03 02:26:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:14,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:14,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:14,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:14,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033097142] [2022-11-03 02:26:14,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033097142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:14,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:14,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:26:14,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183634864] [2022-11-03 02:26:14,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:14,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:26:14,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:14,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:26:14,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:14,659 INFO L87 Difference]: Start difference. First operand 12655 states and 16767 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:24,663 INFO L93 Difference]: Finished difference Result 17659 states and 23404 transitions. [2022-11-03 02:26:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:26:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-03 02:26:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:24,677 INFO L225 Difference]: With dead ends: 17659 [2022-11-03 02:26:24,677 INFO L226 Difference]: Without dead ends: 11918 [2022-11-03 02:26:24,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:26:24,682 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 918 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1063 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:24,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1063 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:26:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11918 states. [2022-11-03 02:26:32,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11918 to 9568. [2022-11-03 02:26:32,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9568 states, 9567 states have (on average 1.310128566948887) internal successors, (12534), 9567 states have internal predecessors, (12534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:32,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9568 states to 9568 states and 12534 transitions. [2022-11-03 02:26:32,335 INFO L78 Accepts]: Start accepts. Automaton has 9568 states and 12534 transitions. Word has length 74 [2022-11-03 02:26:32,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:32,336 INFO L495 AbstractCegarLoop]: Abstraction has 9568 states and 12534 transitions. [2022-11-03 02:26:32,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:32,336 INFO L276 IsEmpty]: Start isEmpty. Operand 9568 states and 12534 transitions. [2022-11-03 02:26:32,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:26:32,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:32,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:32,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-03 02:26:32,342 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:32,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:32,342 INFO L85 PathProgramCache]: Analyzing trace with hash 291044284, now seen corresponding path program 1 times [2022-11-03 02:26:32,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:32,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096039309] [2022-11-03 02:26:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:32,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:32,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:32,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096039309] [2022-11-03 02:26:32,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096039309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:32,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:32,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:32,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067975107] [2022-11-03 02:26:32,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:32,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:32,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:32,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:32,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:32,406 INFO L87 Difference]: Start difference. First operand 9568 states and 12534 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:43,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:26:43,030 INFO L93 Difference]: Finished difference Result 17686 states and 23166 transitions. [2022-11-03 02:26:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:26:43,031 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-03 02:26:43,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:26:43,046 INFO L225 Difference]: With dead ends: 17686 [2022-11-03 02:26:43,046 INFO L226 Difference]: Without dead ends: 12545 [2022-11-03 02:26:43,050 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 [2022-11-03 02:26:43,051 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 311 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:26:43,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 470 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:26:43,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12545 states. [2022-11-03 02:26:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12545 to 12543. [2022-11-03 02:26:53,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12543 states, 12542 states have (on average 1.3066496571519695) internal successors, (16388), 12542 states have internal predecessors, (16388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:53,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12543 states to 12543 states and 16388 transitions. [2022-11-03 02:26:53,285 INFO L78 Accepts]: Start accepts. Automaton has 12543 states and 16388 transitions. Word has length 74 [2022-11-03 02:26:53,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:26:53,286 INFO L495 AbstractCegarLoop]: Abstraction has 12543 states and 16388 transitions. [2022-11-03 02:26:53,286 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:26:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 12543 states and 16388 transitions. [2022-11-03 02:26:53,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 02:26:53,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:26:53,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:26:53,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-03 02:26:53,291 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:26:53,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:26:53,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1665319371, now seen corresponding path program 1 times [2022-11-03 02:26:53,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:26:53,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910120654] [2022-11-03 02:26:53,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:26:53,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:26:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:26:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:26:53,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:26:53,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910120654] [2022-11-03 02:26:53,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910120654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:26:53,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:26:53,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:26:53,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741633819] [2022-11-03 02:26:53,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:26:53,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:26:53,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:26:53,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:26:53,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:26:53,345 INFO L87 Difference]: Start difference. First operand 12543 states and 16388 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:04,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:04,631 INFO L93 Difference]: Finished difference Result 19872 states and 25951 transitions. [2022-11-03 02:27:04,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:04,632 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-11-03 02:27:04,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:04,650 INFO L225 Difference]: With dead ends: 19872 [2022-11-03 02:27:04,650 INFO L226 Difference]: Without dead ends: 13500 [2022-11-03 02:27:04,658 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 [2022-11-03 02:27:04,659 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 309 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:04,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 557 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:27:04,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13500 states. [2022-11-03 02:27:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13500 to 10425. [2022-11-03 02:27:13,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10425 states, 10424 states have (on average 1.3018994627782041) internal successors, (13571), 10424 states have internal predecessors, (13571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10425 states to 10425 states and 13571 transitions. [2022-11-03 02:27:13,505 INFO L78 Accepts]: Start accepts. Automaton has 10425 states and 13571 transitions. Word has length 74 [2022-11-03 02:27:13,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:13,506 INFO L495 AbstractCegarLoop]: Abstraction has 10425 states and 13571 transitions. [2022-11-03 02:27:13,506 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:13,506 INFO L276 IsEmpty]: Start isEmpty. Operand 10425 states and 13571 transitions. [2022-11-03 02:27:13,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:27:13,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:13,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:13,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-03 02:27:13,511 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:13,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:13,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1474128414, now seen corresponding path program 1 times [2022-11-03 02:27:13,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:13,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947615233] [2022-11-03 02:27:13,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:13,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:13,634 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:13,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947615233] [2022-11-03 02:27:13,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947615233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:13,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:13,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:27:13,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497042188] [2022-11-03 02:27:13,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:13,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:27:13,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:13,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:27:13,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:27:13,637 INFO L87 Difference]: Start difference. First operand 10425 states and 13571 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:27:28,344 INFO L93 Difference]: Finished difference Result 22799 states and 29887 transitions. [2022-11-03 02:27:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:27:28,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-03 02:27:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:27:28,369 INFO L225 Difference]: With dead ends: 22799 [2022-11-03 02:27:28,369 INFO L226 Difference]: Without dead ends: 16761 [2022-11-03 02:27:28,377 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 [2022-11-03 02:27:28,378 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 147 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:27:28,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 661 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:27:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16761 states. [2022-11-03 02:27:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16761 to 15869. [2022-11-03 02:27:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15869 states, 15868 states have (on average 1.2919082430047895) internal successors, (20500), 15868 states have internal predecessors, (20500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15869 states to 15869 states and 20500 transitions. [2022-11-03 02:27:42,668 INFO L78 Accepts]: Start accepts. Automaton has 15869 states and 20500 transitions. Word has length 75 [2022-11-03 02:27:42,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:27:42,668 INFO L495 AbstractCegarLoop]: Abstraction has 15869 states and 20500 transitions. [2022-11-03 02:27:42,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:27:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 15869 states and 20500 transitions. [2022-11-03 02:27:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:27:42,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:27:42,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:27:42,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-03 02:27:42,672 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:27:42,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:27:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1862357641, now seen corresponding path program 1 times [2022-11-03 02:27:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:27:42,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284185447] [2022-11-03 02:27:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:27:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:27:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:27:43,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:27:43,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:27:43,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284185447] [2022-11-03 02:27:43,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284185447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:27:43,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:27:43,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:27:43,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686248882] [2022-11-03 02:27:43,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:27:43,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:27:43,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:27:43,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:27:43,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:27:43,111 INFO L87 Difference]: Start difference. First operand 15869 states and 20500 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:28:31,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:28:31,640 INFO L93 Difference]: Finished difference Result 49270 states and 63534 transitions. [2022-11-03 02:28:31,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-03 02:28:31,640 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-03 02:28:31,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:28:31,712 INFO L225 Difference]: With dead ends: 49270 [2022-11-03 02:28:31,712 INFO L226 Difference]: Without dead ends: 46411 [2022-11-03 02:28:31,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=390, Invalid=1170, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 02:28:31,724 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 3314 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3314 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 1908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:28:31,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3314 Valid, 1725 Invalid, 1908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-03 02:28:31,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46411 states. [2022-11-03 02:28:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46411 to 15877. [2022-11-03 02:28:46,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15877 states, 15876 states have (on average 1.291761148904006) internal successors, (20508), 15876 states have internal predecessors, (20508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:28:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 20508 transitions. [2022-11-03 02:28:46,962 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 20508 transitions. Word has length 75 [2022-11-03 02:28:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:28:46,962 INFO L495 AbstractCegarLoop]: Abstraction has 15877 states and 20508 transitions. [2022-11-03 02:28:46,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:28:46,962 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 20508 transitions. [2022-11-03 02:28:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-03 02:28:46,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:28:46,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:28:46,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-03 02:28:46,965 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:28:46,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:28:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash -190072303, now seen corresponding path program 1 times [2022-11-03 02:28:46,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:28:46,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314359948] [2022-11-03 02:28:46,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:28:46,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:28:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:28:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:28:47,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:28:47,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314359948] [2022-11-03 02:28:47,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314359948] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:28:47,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:28:47,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:28:47,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653701251] [2022-11-03 02:28:47,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:28:47,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:28:47,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:28:47,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:28:47,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:28:47,209 INFO L87 Difference]: Start difference. First operand 15877 states and 20508 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:07,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:07,528 INFO L93 Difference]: Finished difference Result 22163 states and 28488 transitions. [2022-11-03 02:29:07,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:29:07,528 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-03 02:29:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:07,550 INFO L225 Difference]: With dead ends: 22163 [2022-11-03 02:29:07,551 INFO L226 Difference]: Without dead ends: 19329 [2022-11-03 02:29:07,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-11-03 02:29:07,556 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1354 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:07,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 1077 Invalid, 971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:29:07,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19329 states. [2022-11-03 02:29:23,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19329 to 15877. [2022-11-03 02:29:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15877 states, 15876 states have (on average 1.2916981607457798) internal successors, (20507), 15876 states have internal predecessors, (20507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:23,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15877 states to 15877 states and 20507 transitions. [2022-11-03 02:29:23,616 INFO L78 Accepts]: Start accepts. Automaton has 15877 states and 20507 transitions. Word has length 75 [2022-11-03 02:29:23,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:23,616 INFO L495 AbstractCegarLoop]: Abstraction has 15877 states and 20507 transitions. [2022-11-03 02:29:23,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:23,617 INFO L276 IsEmpty]: Start isEmpty. Operand 15877 states and 20507 transitions. [2022-11-03 02:29:23,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:29:23,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:23,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:23,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-03 02:29:23,620 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:23,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:23,620 INFO L85 PathProgramCache]: Analyzing trace with hash -908351804, now seen corresponding path program 1 times [2022-11-03 02:29:23,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:23,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673997378] [2022-11-03 02:29:23,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:23,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:23,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:23,849 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:23,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673997378] [2022-11-03 02:29:23,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673997378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:23,849 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:23,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:29:23,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090404541] [2022-11-03 02:29:23,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:23,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:29:23,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:23,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:29:23,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:29:23,851 INFO L87 Difference]: Start difference. First operand 15877 states and 20507 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:29:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:55,212 INFO L93 Difference]: Finished difference Result 32169 states and 41215 transitions. [2022-11-03 02:29:55,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:29:55,213 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-03 02:29:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:55,250 INFO L225 Difference]: With dead ends: 32169 [2022-11-03 02:29:55,250 INFO L226 Difference]: Without dead ends: 29310 [2022-11-03 02:29:55,257 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-03 02:29:55,258 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1343 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1343 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:55,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1343 Valid, 1218 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:29:55,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29310 states. [2022-11-03 02:30:11,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29310 to 15858. [2022-11-03 02:30:11,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15858 states, 15857 states have (on average 1.2918584852115784) internal successors, (20485), 15857 states have internal predecessors, (20485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:30:11,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15858 states to 15858 states and 20485 transitions. [2022-11-03 02:30:11,355 INFO L78 Accepts]: Start accepts. Automaton has 15858 states and 20485 transitions. Word has length 76 [2022-11-03 02:30:11,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:11,356 INFO L495 AbstractCegarLoop]: Abstraction has 15858 states and 20485 transitions. [2022-11-03 02:30:11,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:30:11,356 INFO L276 IsEmpty]: Start isEmpty. Operand 15858 states and 20485 transitions. [2022-11-03 02:30:11,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-03 02:30:11,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:11,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:11,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-03 02:30:11,360 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:11,361 INFO L85 PathProgramCache]: Analyzing trace with hash 628893400, now seen corresponding path program 1 times [2022-11-03 02:30:11,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:11,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656019432] [2022-11-03 02:30:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:11,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:30:11,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:11,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656019432] [2022-11-03 02:30:11,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656019432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:11,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:11,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:30:11,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821051487] [2022-11-03 02:30:11,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:11,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:30:11,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:11,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:30:11,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:30:11,418 INFO L87 Difference]: Start difference. First operand 15858 states and 20485 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:30:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:24,861 INFO L93 Difference]: Finished difference Result 18922 states and 24425 transitions. [2022-11-03 02:30:24,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:30:24,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-11-03 02:30:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:24,879 INFO L225 Difference]: With dead ends: 18922 [2022-11-03 02:30:24,879 INFO L226 Difference]: Without dead ends: 13839 [2022-11-03 02:30:24,884 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 [2022-11-03 02:30:24,884 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 200 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:24,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 703 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:30:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13839 states. [2022-11-03 02:30:36,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13839 to 12344. [2022-11-03 02:30:36,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12344 states, 12343 states have (on average 1.281131005428178) internal successors, (15813), 12343 states have internal predecessors, (15813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:30:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12344 states to 12344 states and 15813 transitions. [2022-11-03 02:30:37,013 INFO L78 Accepts]: Start accepts. Automaton has 12344 states and 15813 transitions. Word has length 76 [2022-11-03 02:30:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:30:37,013 INFO L495 AbstractCegarLoop]: Abstraction has 12344 states and 15813 transitions. [2022-11-03 02:30:37,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:30:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 12344 states and 15813 transitions. [2022-11-03 02:30:37,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:30:37,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:30:37,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:30:37,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-03 02:30:37,016 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:30:37,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:30:37,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1779543533, now seen corresponding path program 1 times [2022-11-03 02:30:37,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:30:37,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372530501] [2022-11-03 02:30:37,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:37,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:30:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:30:37,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:30:37,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372530501] [2022-11-03 02:30:37,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372530501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:30:37,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:30:37,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:30:37,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305865790] [2022-11-03 02:30:37,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:30:37,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:30:37,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:30:37,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:30:37,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:30:37,126 INFO L87 Difference]: Start difference. First operand 12344 states and 15813 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:30:54,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:30:54,478 INFO L93 Difference]: Finished difference Result 26760 states and 34579 transitions. [2022-11-03 02:30:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:30:54,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-03 02:30:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:30:54,520 INFO L225 Difference]: With dead ends: 26760 [2022-11-03 02:30:54,520 INFO L226 Difference]: Without dead ends: 18374 [2022-11-03 02:30:54,531 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 [2022-11-03 02:30:54,532 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 127 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:30:54,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 655 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:30:54,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18374 states. [2022-11-03 02:31:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18374 to 17040. [2022-11-03 02:31:10,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17040 states, 17039 states have (on average 1.2739010505311346) internal successors, (21706), 17039 states have internal predecessors, (21706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:31:10,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17040 states to 17040 states and 21706 transitions. [2022-11-03 02:31:10,733 INFO L78 Accepts]: Start accepts. Automaton has 17040 states and 21706 transitions. Word has length 77 [2022-11-03 02:31:10,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:31:10,733 INFO L495 AbstractCegarLoop]: Abstraction has 17040 states and 21706 transitions. [2022-11-03 02:31:10,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:31:10,733 INFO L276 IsEmpty]: Start isEmpty. Operand 17040 states and 21706 transitions. [2022-11-03 02:31:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 02:31:10,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:31:10,735 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:31:10,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-03 02:31:10,736 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:31:10,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:31:10,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1609955473, now seen corresponding path program 1 times [2022-11-03 02:31:10,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:31:10,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684917913] [2022-11-03 02:31:10,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:31:10,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:31:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:31:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:31:12,540 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:31:12,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684917913] [2022-11-03 02:31:12,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684917913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:31:12,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:31:12,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-11-03 02:31:12,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354426193] [2022-11-03 02:31:12,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:31:12,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:31:12,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:31:12,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:31:12,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:31:12,542 INFO L87 Difference]: Start difference. First operand 17040 states and 21706 transitions. Second operand has 28 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:31:54,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:31:54,419 INFO L93 Difference]: Finished difference Result 34985 states and 44277 transitions. [2022-11-03 02:31:54,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-03 02:31:54,420 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-11-03 02:31:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:31:54,462 INFO L225 Difference]: With dead ends: 34985 [2022-11-03 02:31:54,463 INFO L226 Difference]: Without dead ends: 32937 [2022-11-03 02:31:54,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=491, Invalid=2479, Unknown=0, NotChecked=0, Total=2970 [2022-11-03 02:31:54,471 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 3719 mSDsluCounter, 8851 mSDsCounter, 0 mSdLazyCounter, 4735 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3719 SdHoareTripleChecker+Valid, 9255 SdHoareTripleChecker+Invalid, 4858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 4735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:31:54,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3719 Valid, 9255 Invalid, 4858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 4735 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-03 02:31:54,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32937 states. [2022-11-03 02:32:14,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32937 to 17052. [2022-11-03 02:32:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17052 states, 17051 states have (on average 1.2738842296639494) internal successors, (21721), 17051 states have internal predecessors, (21721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17052 states to 17052 states and 21721 transitions. [2022-11-03 02:32:14,682 INFO L78 Accepts]: Start accepts. Automaton has 17052 states and 21721 transitions. Word has length 77 [2022-11-03 02:32:14,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:32:14,682 INFO L495 AbstractCegarLoop]: Abstraction has 17052 states and 21721 transitions. [2022-11-03 02:32:14,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.75) internal successors, (77), 27 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:14,682 INFO L276 IsEmpty]: Start isEmpty. Operand 17052 states and 21721 transitions. [2022-11-03 02:32:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:32:14,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:32:14,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:32:14,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-03 02:32:14,685 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:32:14,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:32:14,685 INFO L85 PathProgramCache]: Analyzing trace with hash 361619836, now seen corresponding path program 1 times [2022-11-03 02:32:14,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:32:14,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529014184] [2022-11-03 02:32:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:32:14,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:32:14,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:32:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:32:15,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:32:15,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529014184] [2022-11-03 02:32:15,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529014184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:32:15,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:32:15,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:32:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444084061] [2022-11-03 02:32:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:32:15,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:32:15,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:32:15,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:32:15,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:32:15,148 INFO L87 Difference]: Start difference. First operand 17052 states and 21721 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:32:53,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:32:53,966 INFO L93 Difference]: Finished difference Result 33100 states and 42090 transitions. [2022-11-03 02:32:53,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:32:53,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-03 02:32:53,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:32:54,011 INFO L225 Difference]: With dead ends: 33100 [2022-11-03 02:32:54,011 INFO L226 Difference]: Without dead ends: 31039 [2022-11-03 02:32:54,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2022-11-03 02:32:54,019 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 1413 mSDsluCounter, 2824 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 3316 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:32:54,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 3316 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:32:54,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31039 states. [2022-11-03 02:33:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31039 to 17031. [2022-11-03 02:33:15,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17031 states, 17030 states have (on average 1.273869641808573) internal successors, (21694), 17030 states have internal predecessors, (21694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17031 states to 17031 states and 21694 transitions. [2022-11-03 02:33:15,892 INFO L78 Accepts]: Start accepts. Automaton has 17031 states and 21694 transitions. Word has length 78 [2022-11-03 02:33:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:33:15,892 INFO L495 AbstractCegarLoop]: Abstraction has 17031 states and 21694 transitions. [2022-11-03 02:33:15,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:15,892 INFO L276 IsEmpty]: Start isEmpty. Operand 17031 states and 21694 transitions. [2022-11-03 02:33:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-03 02:33:15,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:33:15,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:33:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-03 02:33:15,895 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:33:15,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:33:15,895 INFO L85 PathProgramCache]: Analyzing trace with hash -975886505, now seen corresponding path program 1 times [2022-11-03 02:33:15,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:33:15,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044799665] [2022-11-03 02:33:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:33:15,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:33:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:33:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:33:16,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:33:16,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044799665] [2022-11-03 02:33:16,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044799665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:33:16,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:33:16,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:33:16,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284639045] [2022-11-03 02:33:16,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:33:16,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:33:16,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:33:16,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:33:16,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:33:16,422 INFO L87 Difference]: Start difference. First operand 17031 states and 21694 transitions. Second operand has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:33:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:33:59,757 INFO L93 Difference]: Finished difference Result 35721 states and 45382 transitions. [2022-11-03 02:33:59,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:33:59,758 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-03 02:33:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:33:59,812 INFO L225 Difference]: With dead ends: 35721 [2022-11-03 02:33:59,812 INFO L226 Difference]: Without dead ends: 33673 [2022-11-03 02:33:59,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:33:59,819 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 2000 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:33:59,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2000 Valid, 3015 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:33:59,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33673 states. [2022-11-03 02:34:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33673 to 17028. [2022-11-03 02:34:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17028 states, 17027 states have (on average 1.2738004346038645) internal successors, (21689), 17027 states have internal predecessors, (21689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:20,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17028 states to 17028 states and 21689 transitions. [2022-11-03 02:34:20,713 INFO L78 Accepts]: Start accepts. Automaton has 17028 states and 21689 transitions. Word has length 78 [2022-11-03 02:34:20,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:20,714 INFO L495 AbstractCegarLoop]: Abstraction has 17028 states and 21689 transitions. [2022-11-03 02:34:20,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.5) internal successors, (78), 11 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:20,714 INFO L276 IsEmpty]: Start isEmpty. Operand 17028 states and 21689 transitions. [2022-11-03 02:34:20,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-03 02:34:20,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:20,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:20,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-03 02:34:20,717 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:20,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash -843992903, now seen corresponding path program 1 times [2022-11-03 02:34:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:34:20,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491569600] [2022-11-03 02:34:20,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:20,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:34:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:20,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:34:20,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491569600] [2022-11-03 02:34:20,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491569600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:20,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:20,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:34:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930520423] [2022-11-03 02:34:20,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:20,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:34:20,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:34:20,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:34:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:34:20,823 INFO L87 Difference]: Start difference. First operand 17028 states and 21689 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:34:51,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:51,806 INFO L93 Difference]: Finished difference Result 37202 states and 47795 transitions. [2022-11-03 02:34:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:34:51,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-11-03 02:34:51,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:51,840 INFO L225 Difference]: With dead ends: 37202 [2022-11-03 02:34:51,840 INFO L226 Difference]: Without dead ends: 25544 [2022-11-03 02:34:51,849 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 [2022-11-03 02:34:51,849 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 92 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:51,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 641 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:34:51,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25544 states.