./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9a9140492f4e733c378f87636be646ccd8e7d2f60174537e06a80c7020d713fe --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:36:36,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:36:36,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:36:36,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:36:36,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:36:36,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:36:36,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:36:36,409 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:36:36,410 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:36:36,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:36:36,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:36:36,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:36:36,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:36:36,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:36:36,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:36:36,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:36:36,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:36:36,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:36:36,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:36:36,427 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:36:36,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:36:36,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:36:36,433 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:36:36,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:36:36,439 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:36:36,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:36:36,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:36:36,445 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:36:36,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:36:36,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:36:36,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:36:36,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:36:36,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:36:36,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:36:36,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:36:36,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:36:36,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:36:36,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:36:36,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:36:36,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:36:36,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:36:36,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:36:36,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:36:36,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:36:36,502 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:36:36,502 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:36:36,503 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:36:36,503 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:36:36,503 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:36:36,503 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:36:36,504 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:36:36,504 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:36:36,505 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:36:36,505 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:36:36,505 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:36:36,505 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:36:36,506 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:36:36,506 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:36:36,506 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:36:36,506 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:36:36,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:36:36,507 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:36:36,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:36:36,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:36:36,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:36:36,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:36:36,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:36:36,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:36:36,510 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:36:36,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:36:36,510 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:36:36,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:36:36,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:36:36,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:36:36,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:36:36,511 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:36:36,512 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:36:36,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:36:36,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:36:36,512 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:36:36,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:36:36,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:36:36,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:36:36,514 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_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a9140492f4e733c378f87636be646ccd8e7d2f60174537e06a80c7020d713fe [2022-11-22 02:36:36,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:36:36,853 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:36:36,856 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:36:36,858 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:36:36,858 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:36:36,860 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-22 02:36:39,873 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:36:40,215 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:36:40,216 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-22 02:36:40,237 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/data/d7991b359/2d16fd8e6d8345cc87c6d77f2a46d0d5/FLAG0b2e7f486 [2022-11-22 02:36:40,250 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/data/d7991b359/2d16fd8e6d8345cc87c6d77f2a46d0d5 [2022-11-22 02:36:40,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:36:40,263 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:36:40,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:36:40,266 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:36:40,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:36:40,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:36:40" (1/1) ... [2022-11-22 02:36:40,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71a7e48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:40, skipping insertion in model container [2022-11-22 02:36:40,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:36:40" (1/1) ... [2022-11-22 02:36:40,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:36:40,382 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:36:40,663 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8635,8648] [2022-11-22 02:36:40,706 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15820,15833] [2022-11-22 02:36:40,721 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18017,18030] [2022-11-22 02:36:40,728 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19041,19054] [2022-11-22 02:36:40,934 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:36:40,957 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:36:41,015 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[8635,8648] [2022-11-22 02:36:41,063 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15820,15833] [2022-11-22 02:36:41,093 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[18017,18030] [2022-11-22 02:36:41,105 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[19041,19054] [2022-11-22 02:36:41,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:36:41,256 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:36:41,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41 WrapperNode [2022-11-22 02:36:41,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:36:41,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:36:41,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:36:41,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:36:41,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,409 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2589 [2022-11-22 02:36:41,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:36:41,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:36:41,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:36:41,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:36:41,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,519 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:36:41,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:36:41,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:36:41,542 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:36:41,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (1/1) ... [2022-11-22 02:36:41,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:36:41,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:36:41,578 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:36:41,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:36:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:36:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:36:41,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:36:41,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:36:41,955 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:36:41,958 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:36:43,751 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:36:43,989 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:36:43,989 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:36:43,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:36:43 BoogieIcfgContainer [2022-11-22 02:36:43,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:36:43,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:36:43,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:36:44,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:36:44,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:36:40" (1/3) ... [2022-11-22 02:36:44,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656f24d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:36:44, skipping insertion in model container [2022-11-22 02:36:44,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:36:41" (2/3) ... [2022-11-22 02:36:44,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656f24d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:36:44, skipping insertion in model container [2022-11-22 02:36:44,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:36:43" (3/3) ... [2022-11-22 02:36:44,004 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-22 02:36:44,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:36:44,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-22 02:36:44,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:36:44,100 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;@24c697a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:36:44,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-22 02:36:44,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 431 states, 426 states have (on average 1.8568075117370892) internal successors, (791), 430 states have internal predecessors, (791), 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) [2022-11-22 02:36:44,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:36:44,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:44,125 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] [2022-11-22 02:36:44,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:44,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:44,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1875598250, now seen corresponding path program 1 times [2022-11-22 02:36:44,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:44,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463123281] [2022-11-22 02:36:44,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:44,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:44,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:44,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:44,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463123281] [2022-11-22 02:36:44,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463123281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:44,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:44,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:36:44,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604650747] [2022-11-22 02:36:44,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:44,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:36:44,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:44,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:36:44,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:36:44,616 INFO L87 Difference]: Start difference. First operand has 431 states, 426 states have (on average 1.8568075117370892) internal successors, (791), 430 states have internal predecessors, (791), 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 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-22 02:36:44,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:44,796 INFO L93 Difference]: Finished difference Result 651 states and 1142 transitions. [2022-11-22 02:36:44,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:36:44,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-11-22 02:36:44,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:44,814 INFO L225 Difference]: With dead ends: 651 [2022-11-22 02:36:44,814 INFO L226 Difference]: Without dead ends: 524 [2022-11-22 02:36:44,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:36:44,821 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 399 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:44,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1305 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:36:44,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2022-11-22 02:36:44,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 518. [2022-11-22 02:36:44,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 514 states have (on average 1.3073929961089494) internal successors, (672), 517 states have internal predecessors, (672), 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) [2022-11-22 02:36:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 672 transitions. [2022-11-22 02:36:44,936 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 672 transitions. Word has length 50 [2022-11-22 02:36:44,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:44,937 INFO L495 AbstractCegarLoop]: Abstraction has 518 states and 672 transitions. [2022-11-22 02:36:44,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-22 02:36:44,938 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 672 transitions. [2022-11-22 02:36:44,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:36:44,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:44,941 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] [2022-11-22 02:36:44,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:36:44,942 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:44,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash -2061015356, now seen corresponding path program 1 times [2022-11-22 02:36:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:44,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033155429] [2022-11-22 02:36:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:45,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:45,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:45,162 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:45,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033155429] [2022-11-22 02:36:45,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033155429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:45,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:45,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:36:45,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176508328] [2022-11-22 02:36:45,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:45,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:36:45,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:45,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:36:45,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:36:45,167 INFO L87 Difference]: Start difference. First operand 518 states and 672 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-22 02:36:45,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:45,335 INFO L93 Difference]: Finished difference Result 859 states and 1143 transitions. [2022-11-22 02:36:45,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:36:45,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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 50 [2022-11-22 02:36:45,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:45,340 INFO L225 Difference]: With dead ends: 859 [2022-11-22 02:36:45,340 INFO L226 Difference]: Without dead ends: 692 [2022-11-22 02:36:45,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:36:45,343 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 276 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:45,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 912 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:36:45,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-11-22 02:36:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 685. [2022-11-22 02:36:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 681 states have (on average 1.3259911894273129) internal successors, (903), 684 states have internal predecessors, (903), 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) [2022-11-22 02:36:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 903 transitions. [2022-11-22 02:36:45,392 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 903 transitions. Word has length 50 [2022-11-22 02:36:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:45,392 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 903 transitions. [2022-11-22 02:36:45,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 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) [2022-11-22 02:36:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 903 transitions. [2022-11-22 02:36:45,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:36:45,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:45,395 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] [2022-11-22 02:36:45,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:36:45,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:45,397 INFO L85 PathProgramCache]: Analyzing trace with hash 2089668058, now seen corresponding path program 1 times [2022-11-22 02:36:45,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:45,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794212158] [2022-11-22 02:36:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:45,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:45,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:45,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:45,595 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:45,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794212158] [2022-11-22 02:36:45,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794212158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:45,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:45,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:36:45,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299946181] [2022-11-22 02:36:45,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:45,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:36:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:36:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:36:45,599 INFO L87 Difference]: Start difference. First operand 685 states and 903 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-22 02:36:46,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:46,167 INFO L93 Difference]: Finished difference Result 1451 states and 1958 transitions. [2022-11-22 02:36:46,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:36:46,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2022-11-22 02:36:46,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:46,173 INFO L225 Difference]: With dead ends: 1451 [2022-11-22 02:36:46,173 INFO L226 Difference]: Without dead ends: 882 [2022-11-22 02:36:46,178 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 [2022-11-22 02:36:46,182 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 1444 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:46,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 359 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:36:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-22 02:36:46,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 876. [2022-11-22 02:36:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 872 states have (on average 1.3451834862385321) internal successors, (1173), 875 states have internal predecessors, (1173), 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) [2022-11-22 02:36:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1173 transitions. [2022-11-22 02:36:46,276 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1173 transitions. Word has length 50 [2022-11-22 02:36:46,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:46,278 INFO L495 AbstractCegarLoop]: Abstraction has 876 states and 1173 transitions. [2022-11-22 02:36:46,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 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) [2022-11-22 02:36:46,279 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1173 transitions. [2022-11-22 02:36:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 02:36:46,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:46,282 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] [2022-11-22 02:36:46,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:36:46,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:46,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:46,284 INFO L85 PathProgramCache]: Analyzing trace with hash -941949597, now seen corresponding path program 1 times [2022-11-22 02:36:46,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:46,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911127121] [2022-11-22 02:36:46,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:46,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:46,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:46,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:46,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911127121] [2022-11-22 02:36:46,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911127121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:46,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:46,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:36:46,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296159435] [2022-11-22 02:36:46,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:46,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:36:46,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:46,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:36:46,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:36:46,385 INFO L87 Difference]: Start difference. First operand 876 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-11-22 02:36:46,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:46,638 INFO L93 Difference]: Finished difference Result 1818 states and 2456 transitions. [2022-11-22 02:36:46,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:36:46,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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 51 [2022-11-22 02:36:46,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:46,644 INFO L225 Difference]: With dead ends: 1818 [2022-11-22 02:36:46,645 INFO L226 Difference]: Without dead ends: 1286 [2022-11-22 02:36:46,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:36:46,647 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 332 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:46,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 834 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:36:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2022-11-22 02:36:46,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1280. [2022-11-22 02:36:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1276 states have (on average 1.3307210031347962) internal successors, (1698), 1279 states have internal predecessors, (1698), 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) [2022-11-22 02:36:46,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1698 transitions. [2022-11-22 02:36:46,821 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1698 transitions. Word has length 51 [2022-11-22 02:36:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:46,821 INFO L495 AbstractCegarLoop]: Abstraction has 1280 states and 1698 transitions. [2022-11-22 02:36:46,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 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) [2022-11-22 02:36:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1698 transitions. [2022-11-22 02:36:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 02:36:46,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:46,824 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] [2022-11-22 02:36:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:36:46,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:46,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:46,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1880466014, now seen corresponding path program 1 times [2022-11-22 02:36:46,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:46,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032331426] [2022-11-22 02:36:46,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:46,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:46,943 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:46,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032331426] [2022-11-22 02:36:46,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032331426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:46,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:46,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:36:46,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709513741] [2022-11-22 02:36:46,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:46,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:36:46,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:46,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:36:46,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:36:46,946 INFO L87 Difference]: Start difference. First operand 1280 states and 1698 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-11-22 02:36:47,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:47,637 INFO L93 Difference]: Finished difference Result 2958 states and 3982 transitions. [2022-11-22 02:36:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:36:47,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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 51 [2022-11-22 02:36:47,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:47,648 INFO L225 Difference]: With dead ends: 2958 [2022-11-22 02:36:47,648 INFO L226 Difference]: Without dead ends: 1849 [2022-11-22 02:36:47,650 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 [2022-11-22 02:36:47,650 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1296 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:47,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 318 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:36:47,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2022-11-22 02:36:47,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 1843. [2022-11-22 02:36:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1839 states have (on average 1.341489940184883) internal successors, (2467), 1842 states have internal predecessors, (2467), 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) [2022-11-22 02:36:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2467 transitions. [2022-11-22 02:36:47,946 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2467 transitions. Word has length 51 [2022-11-22 02:36:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:47,946 INFO L495 AbstractCegarLoop]: Abstraction has 1843 states and 2467 transitions. [2022-11-22 02:36:47,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 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) [2022-11-22 02:36:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2467 transitions. [2022-11-22 02:36:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-22 02:36:47,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:47,949 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] [2022-11-22 02:36:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:36:47,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:47,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1402460387, now seen corresponding path program 1 times [2022-11-22 02:36:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:47,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003189380] [2022-11-22 02:36:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:47,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:47,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:48,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:48,140 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:48,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003189380] [2022-11-22 02:36:48,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003189380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:48,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:48,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:36:48,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229211058] [2022-11-22 02:36:48,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:48,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:36:48,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:48,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:36:48,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:36:48,142 INFO L87 Difference]: Start difference. First operand 1843 states and 2467 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-22 02:36:48,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:48,941 INFO L93 Difference]: Finished difference Result 4598 states and 6214 transitions. [2022-11-22 02:36:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:36:48,941 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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 52 [2022-11-22 02:36:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:48,952 INFO L225 Difference]: With dead ends: 4598 [2022-11-22 02:36:48,989 INFO L226 Difference]: Without dead ends: 2926 [2022-11-22 02:36:48,992 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 [2022-11-22 02:36:48,993 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1188 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:48,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 276 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:36:48,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2022-11-22 02:36:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2919. [2022-11-22 02:36:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 2915 states have (on average 1.3403087478559177) internal successors, (3907), 2918 states have internal predecessors, (3907), 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) [2022-11-22 02:36:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 3907 transitions. [2022-11-22 02:36:49,533 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 3907 transitions. Word has length 52 [2022-11-22 02:36:49,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:49,533 INFO L495 AbstractCegarLoop]: Abstraction has 2919 states and 3907 transitions. [2022-11-22 02:36:49,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 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) [2022-11-22 02:36:49,534 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 3907 transitions. [2022-11-22 02:36:49,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-22 02:36:49,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:49,536 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] [2022-11-22 02:36:49,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:36:49,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:49,538 INFO L85 PathProgramCache]: Analyzing trace with hash -78307905, now seen corresponding path program 1 times [2022-11-22 02:36:49,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:49,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898664544] [2022-11-22 02:36:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:49,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:49,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:49,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898664544] [2022-11-22 02:36:49,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898664544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:49,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:49,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:36:49,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812951404] [2022-11-22 02:36:49,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:49,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:36:49,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:49,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:36:49,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:36:49,762 INFO L87 Difference]: Start difference. First operand 2919 states and 3907 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-22 02:36:51,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:51,810 INFO L93 Difference]: Finished difference Result 10102 states and 13672 transitions. [2022-11-22 02:36:51,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:36:51,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-11-22 02:36:51,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:51,847 INFO L225 Difference]: With dead ends: 10102 [2022-11-22 02:36:51,847 INFO L226 Difference]: Without dead ends: 8919 [2022-11-22 02:36:51,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:36:51,851 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 2320 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:51,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 519 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:36:51,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8919 states. [2022-11-22 02:36:52,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8919 to 2933. [2022-11-22 02:36:52,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2933 states, 2929 states have (on average 1.3400477978832366) internal successors, (3925), 2932 states have internal predecessors, (3925), 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) [2022-11-22 02:36:52,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2933 states to 2933 states and 3925 transitions. [2022-11-22 02:36:52,432 INFO L78 Accepts]: Start accepts. Automaton has 2933 states and 3925 transitions. Word has length 53 [2022-11-22 02:36:52,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:52,432 INFO L495 AbstractCegarLoop]: Abstraction has 2933 states and 3925 transitions. [2022-11-22 02:36:52,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-22 02:36:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2933 states and 3925 transitions. [2022-11-22 02:36:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-22 02:36:52,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:52,435 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] [2022-11-22 02:36:52,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:36:52,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1272319552, now seen corresponding path program 1 times [2022-11-22 02:36:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:52,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940425975] [2022-11-22 02:36:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:52,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:52,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:52,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940425975] [2022-11-22 02:36:52,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940425975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:52,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:52,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:36:52,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515001963] [2022-11-22 02:36:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:52,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:36:52,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:52,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:36:52,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:36:52,620 INFO L87 Difference]: Start difference. First operand 2933 states and 3925 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-22 02:36:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:55,544 INFO L93 Difference]: Finished difference Result 11196 states and 15277 transitions. [2022-11-22 02:36:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:36:55,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-11-22 02:36:55,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:55,600 INFO L225 Difference]: With dead ends: 11196 [2022-11-22 02:36:55,600 INFO L226 Difference]: Without dead ends: 10184 [2022-11-22 02:36:55,605 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 [2022-11-22 02:36:55,606 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 1799 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:55,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 614 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:36:55,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10184 states. [2022-11-22 02:36:56,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10184 to 2955. [2022-11-22 02:36:56,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2955 states, 2951 states have (on average 1.3405625211792613) internal successors, (3956), 2954 states have internal predecessors, (3956), 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) [2022-11-22 02:36:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2955 states to 2955 states and 3956 transitions. [2022-11-22 02:36:56,396 INFO L78 Accepts]: Start accepts. Automaton has 2955 states and 3956 transitions. Word has length 53 [2022-11-22 02:36:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:36:56,396 INFO L495 AbstractCegarLoop]: Abstraction has 2955 states and 3956 transitions. [2022-11-22 02:36:56,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-22 02:36:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2955 states and 3956 transitions. [2022-11-22 02:36:56,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-22 02:36:56,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:36:56,400 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] [2022-11-22 02:36:56,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:36:56,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:36:56,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:36:56,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1821294495, now seen corresponding path program 1 times [2022-11-22 02:36:56,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:36:56,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893968497] [2022-11-22 02:36:56,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:36:56,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:36:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:36:56,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:36:56,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:36:56,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893968497] [2022-11-22 02:36:56,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893968497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:36:56,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:36:56,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:36:56,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099212934] [2022-11-22 02:36:56,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:36:56,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:36:56,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:36:56,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:36:56,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:36:56,613 INFO L87 Difference]: Start difference. First operand 2955 states and 3956 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-22 02:36:59,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:36:59,740 INFO L93 Difference]: Finished difference Result 13415 states and 18283 transitions. [2022-11-22 02:36:59,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:36:59,741 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2022-11-22 02:36:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:36:59,776 INFO L225 Difference]: With dead ends: 13415 [2022-11-22 02:36:59,776 INFO L226 Difference]: Without dead ends: 12285 [2022-11-22 02:36:59,782 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 [2022-11-22 02:36:59,783 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 2650 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2650 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:36:59,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2650 Valid, 553 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:36:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12285 states. [2022-11-22 02:37:00,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12285 to 2989. [2022-11-22 02:37:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2989 states, 2985 states have (on average 1.340033500837521) internal successors, (4000), 2988 states have internal predecessors, (4000), 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) [2022-11-22 02:37:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2989 states to 2989 states and 4000 transitions. [2022-11-22 02:37:00,854 INFO L78 Accepts]: Start accepts. Automaton has 2989 states and 4000 transitions. Word has length 53 [2022-11-22 02:37:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:00,855 INFO L495 AbstractCegarLoop]: Abstraction has 2989 states and 4000 transitions. [2022-11-22 02:37:00,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 6 states have internal predecessors, (53), 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) [2022-11-22 02:37:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2989 states and 4000 transitions. [2022-11-22 02:37:00,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 02:37:00,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:00,857 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] [2022-11-22 02:37:00,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:37:00,857 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:00,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:00,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1007743463, now seen corresponding path program 1 times [2022-11-22 02:37:00,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:00,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837414927] [2022-11-22 02:37:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:00,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:01,192 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:01,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837414927] [2022-11-22 02:37:01,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837414927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:01,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:01,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:37:01,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515005816] [2022-11-22 02:37:01,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:01,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:37:01,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:01,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:37:01,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:37:01,195 INFO L87 Difference]: Start difference. First operand 2989 states and 4000 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2022-11-22 02:37:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:03,053 INFO L93 Difference]: Finished difference Result 7334 states and 9915 transitions. [2022-11-22 02:37:03,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:37:03,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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 54 [2022-11-22 02:37:03,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:03,064 INFO L225 Difference]: With dead ends: 7334 [2022-11-22 02:37:03,065 INFO L226 Difference]: Without dead ends: 5138 [2022-11-22 02:37:03,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:37:03,070 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 1521 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:03,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1521 Valid, 745 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:37:03,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5138 states. [2022-11-22 02:37:03,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5138 to 2908. [2022-11-22 02:37:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2904 states have (on average 1.3384986225895317) internal successors, (3887), 2907 states have internal predecessors, (3887), 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) [2022-11-22 02:37:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3887 transitions. [2022-11-22 02:37:03,828 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3887 transitions. Word has length 54 [2022-11-22 02:37:03,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:03,828 INFO L495 AbstractCegarLoop]: Abstraction has 2908 states and 3887 transitions. [2022-11-22 02:37:03,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 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) [2022-11-22 02:37:03,829 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3887 transitions. [2022-11-22 02:37:03,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 02:37:03,831 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:03,831 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] [2022-11-22 02:37:03,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:37:03,832 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash -649389773, now seen corresponding path program 1 times [2022-11-22 02:37:03,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:03,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221199149] [2022-11-22 02:37:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:03,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:03,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:04,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:04,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221199149] [2022-11-22 02:37:04,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221199149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:04,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:04,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:37:04,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925553843] [2022-11-22 02:37:04,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:04,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:37:04,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:37:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:37:04,181 INFO L87 Difference]: Start difference. First operand 2908 states and 3887 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2022-11-22 02:37:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:07,071 INFO L93 Difference]: Finished difference Result 8963 states and 12077 transitions. [2022-11-22 02:37:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:37:07,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2022-11-22 02:37:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:07,088 INFO L225 Difference]: With dead ends: 8963 [2022-11-22 02:37:07,088 INFO L226 Difference]: Without dead ends: 6909 [2022-11-22 02:37:07,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:37:07,095 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 969 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:07,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1390 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:37:07,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6909 states. [2022-11-22 02:37:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6909 to 2879. [2022-11-22 02:37:07,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2875 states have (on average 1.3377391304347825) internal successors, (3846), 2878 states have internal predecessors, (3846), 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) [2022-11-22 02:37:07,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3846 transitions. [2022-11-22 02:37:07,768 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3846 transitions. Word has length 54 [2022-11-22 02:37:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:07,769 INFO L495 AbstractCegarLoop]: Abstraction has 2879 states and 3846 transitions. [2022-11-22 02:37:07,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2022-11-22 02:37:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3846 transitions. [2022-11-22 02:37:07,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 02:37:07,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:07,771 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] [2022-11-22 02:37:07,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:37:07,772 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:07,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:07,772 INFO L85 PathProgramCache]: Analyzing trace with hash 2094955992, now seen corresponding path program 1 times [2022-11-22 02:37:07,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:07,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576608687] [2022-11-22 02:37:07,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:07,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:08,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:08,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:08,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576608687] [2022-11-22 02:37:08,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576608687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:08,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:08,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:37:08,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621457659] [2022-11-22 02:37:08,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:08,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:37:08,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:08,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:37:08,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:37:08,030 INFO L87 Difference]: Start difference. First operand 2879 states and 3846 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2022-11-22 02:37:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:10,597 INFO L93 Difference]: Finished difference Result 6153 states and 8248 transitions. [2022-11-22 02:37:10,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:37:10,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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 54 [2022-11-22 02:37:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:10,611 INFO L225 Difference]: With dead ends: 6153 [2022-11-22 02:37:10,611 INFO L226 Difference]: Without dead ends: 6148 [2022-11-22 02:37:10,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:37:10,614 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 1394 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1394 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:10,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1394 Valid, 1078 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:37:10,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2022-11-22 02:37:11,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 2879. [2022-11-22 02:37:11,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2875 states have (on average 1.3370434782608696) internal successors, (3844), 2878 states have internal predecessors, (3844), 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) [2022-11-22 02:37:11,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3844 transitions. [2022-11-22 02:37:11,418 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3844 transitions. Word has length 54 [2022-11-22 02:37:11,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:11,418 INFO L495 AbstractCegarLoop]: Abstraction has 2879 states and 3844 transitions. [2022-11-22 02:37:11,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 7 states have internal predecessors, (54), 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) [2022-11-22 02:37:11,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3844 transitions. [2022-11-22 02:37:11,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 02:37:11,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:11,421 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] [2022-11-22 02:37:11,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:37:11,421 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:11,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:11,422 INFO L85 PathProgramCache]: Analyzing trace with hash -544921047, now seen corresponding path program 1 times [2022-11-22 02:37:11,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:11,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956537231] [2022-11-22 02:37:11,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:11,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:11,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:11,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956537231] [2022-11-22 02:37:11,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956537231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:11,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:11,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:11,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286290437] [2022-11-22 02:37:11,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:11,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:11,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:11,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:11,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:11,487 INFO L87 Difference]: Start difference. First operand 2879 states and 3844 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-11-22 02:37:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:12,755 INFO L93 Difference]: Finished difference Result 3980 states and 5336 transitions. [2022-11-22 02:37:12,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:12,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-11-22 02:37:12,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:12,761 INFO L225 Difference]: With dead ends: 3980 [2022-11-22 02:37:12,761 INFO L226 Difference]: Without dead ends: 2886 [2022-11-22 02:37:12,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:12,764 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 183 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:12,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 675 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:12,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2022-11-22 02:37:13,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2879. [2022-11-22 02:37:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2875 states have (on average 1.3217391304347825) internal successors, (3800), 2878 states have internal predecessors, (3800), 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) [2022-11-22 02:37:13,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3800 transitions. [2022-11-22 02:37:13,452 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3800 transitions. Word has length 55 [2022-11-22 02:37:13,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:13,452 INFO L495 AbstractCegarLoop]: Abstraction has 2879 states and 3800 transitions. [2022-11-22 02:37:13,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-11-22 02:37:13,453 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3800 transitions. [2022-11-22 02:37:13,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 02:37:13,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:13,455 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] [2022-11-22 02:37:13,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:37:13,455 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:13,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:13,456 INFO L85 PathProgramCache]: Analyzing trace with hash -171324051, now seen corresponding path program 1 times [2022-11-22 02:37:13,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:13,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79992847] [2022-11-22 02:37:13,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:13,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:13,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:13,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:13,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79992847] [2022-11-22 02:37:13,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79992847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:13,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:13,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:13,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240283340] [2022-11-22 02:37:13,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:13,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:13,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:13,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:13,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:13,517 INFO L87 Difference]: Start difference. First operand 2879 states and 3800 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-11-22 02:37:14,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:14,418 INFO L93 Difference]: Finished difference Result 4033 states and 5344 transitions. [2022-11-22 02:37:14,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:14,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-11-22 02:37:14,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:14,424 INFO L225 Difference]: With dead ends: 4033 [2022-11-22 02:37:14,424 INFO L226 Difference]: Without dead ends: 2885 [2022-11-22 02:37:14,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:14,427 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 199 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:14,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 680 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:37:14,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2885 states. [2022-11-22 02:37:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2885 to 2879. [2022-11-22 02:37:15,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2875 states have (on average 1.3071304347826087) internal successors, (3758), 2878 states have internal predecessors, (3758), 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) [2022-11-22 02:37:15,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3758 transitions. [2022-11-22 02:37:15,342 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3758 transitions. Word has length 55 [2022-11-22 02:37:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:15,342 INFO L495 AbstractCegarLoop]: Abstraction has 2879 states and 3758 transitions. [2022-11-22 02:37:15,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-11-22 02:37:15,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3758 transitions. [2022-11-22 02:37:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 02:37:15,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:15,345 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] [2022-11-22 02:37:15,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:37:15,345 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:15,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1692855010, now seen corresponding path program 1 times [2022-11-22 02:37:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:15,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344528610] [2022-11-22 02:37:15,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:15,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:15,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:15,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344528610] [2022-11-22 02:37:15,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344528610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:15,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:15,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:15,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678389958] [2022-11-22 02:37:15,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:15,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:15,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:15,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:15,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:15,413 INFO L87 Difference]: Start difference. First operand 2879 states and 3758 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-11-22 02:37:16,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:16,185 INFO L93 Difference]: Finished difference Result 4119 states and 5402 transitions. [2022-11-22 02:37:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:16,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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 55 [2022-11-22 02:37:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:16,192 INFO L225 Difference]: With dead ends: 4119 [2022-11-22 02:37:16,192 INFO L226 Difference]: Without dead ends: 2870 [2022-11-22 02:37:16,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:16,197 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 219 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:16,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 702 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:37:16,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2022-11-22 02:37:17,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2864. [2022-11-22 02:37:17,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2864 states, 2860 states have (on average 1.28986013986014) internal successors, (3689), 2863 states have internal predecessors, (3689), 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) [2022-11-22 02:37:17,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2864 states to 2864 states and 3689 transitions. [2022-11-22 02:37:17,205 INFO L78 Accepts]: Start accepts. Automaton has 2864 states and 3689 transitions. Word has length 55 [2022-11-22 02:37:17,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:17,205 INFO L495 AbstractCegarLoop]: Abstraction has 2864 states and 3689 transitions. [2022-11-22 02:37:17,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 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) [2022-11-22 02:37:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2864 states and 3689 transitions. [2022-11-22 02:37:17,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-22 02:37:17,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:17,210 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] [2022-11-22 02:37:17,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:37:17,210 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:17,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:17,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1901622388, now seen corresponding path program 1 times [2022-11-22 02:37:17,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:17,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053397356] [2022-11-22 02:37:17,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:17,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:17,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:17,265 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:17,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053397356] [2022-11-22 02:37:17,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053397356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:17,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:17,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:17,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002820279] [2022-11-22 02:37:17,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:17,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:17,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:17,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:17,267 INFO L87 Difference]: Start difference. First operand 2864 states and 3689 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-11-22 02:37:18,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:18,444 INFO L93 Difference]: Finished difference Result 4737 states and 6131 transitions. [2022-11-22 02:37:18,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:18,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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 56 [2022-11-22 02:37:18,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:18,450 INFO L225 Difference]: With dead ends: 4737 [2022-11-22 02:37:18,450 INFO L226 Difference]: Without dead ends: 3339 [2022-11-22 02:37:18,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:18,453 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 306 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:18,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 504 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2022-11-22 02:37:19,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 2654. [2022-11-22 02:37:19,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2654 states, 2650 states have (on average 1.2871698113207548) internal successors, (3411), 2653 states have internal predecessors, (3411), 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) [2022-11-22 02:37:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2654 states to 2654 states and 3411 transitions. [2022-11-22 02:37:19,174 INFO L78 Accepts]: Start accepts. Automaton has 2654 states and 3411 transitions. Word has length 56 [2022-11-22 02:37:19,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:19,174 INFO L495 AbstractCegarLoop]: Abstraction has 2654 states and 3411 transitions. [2022-11-22 02:37:19,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2022-11-22 02:37:19,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2654 states and 3411 transitions. [2022-11-22 02:37:19,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 02:37:19,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:19,177 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] [2022-11-22 02:37:19,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:37:19,178 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:19,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1344491359, now seen corresponding path program 1 times [2022-11-22 02:37:19,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:19,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936083] [2022-11-22 02:37:19,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:19,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:20,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:20,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936083] [2022-11-22 02:37:20,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:20,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:20,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-22 02:37:20,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323222960] [2022-11-22 02:37:20,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:20,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-22 02:37:20,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-22 02:37:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:37:20,515 INFO L87 Difference]: Start difference. First operand 2654 states and 3411 transitions. Second operand has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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) [2022-11-22 02:37:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:25,440 INFO L93 Difference]: Finished difference Result 4529 states and 5788 transitions. [2022-11-22 02:37:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:37:25,441 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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 57 [2022-11-22 02:37:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:25,444 INFO L225 Difference]: With dead ends: 4529 [2022-11-22 02:37:25,444 INFO L226 Difference]: Without dead ends: 4525 [2022-11-22 02:37:25,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:37:25,446 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 2739 mSDsluCounter, 4938 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2739 SdHoareTripleChecker+Valid, 5385 SdHoareTripleChecker+Invalid, 2594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:25,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2739 Valid, 5385 Invalid, 2594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-22 02:37:25,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4525 states. [2022-11-22 02:37:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4525 to 2666. [2022-11-22 02:37:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2666 states, 2662 states have (on average 1.2877535687453043) internal successors, (3428), 2665 states have internal predecessors, (3428), 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) [2022-11-22 02:37:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2666 states to 2666 states and 3428 transitions. [2022-11-22 02:37:26,173 INFO L78 Accepts]: Start accepts. Automaton has 2666 states and 3428 transitions. Word has length 57 [2022-11-22 02:37:26,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:26,173 INFO L495 AbstractCegarLoop]: Abstraction has 2666 states and 3428 transitions. [2022-11-22 02:37:26,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0) internal successors, (57), 18 states have internal predecessors, (57), 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) [2022-11-22 02:37:26,174 INFO L276 IsEmpty]: Start isEmpty. Operand 2666 states and 3428 transitions. [2022-11-22 02:37:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 02:37:26,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:26,176 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] [2022-11-22 02:37:26,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:37:26,177 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:26,178 INFO L85 PathProgramCache]: Analyzing trace with hash 972832554, now seen corresponding path program 1 times [2022-11-22 02:37:26,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:26,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122140698] [2022-11-22 02:37:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:26,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:26,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:26,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:26,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122140698] [2022-11-22 02:37:26,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122140698] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:26,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:26,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:37:26,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453061753] [2022-11-22 02:37:26,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:26,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:37:26,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:37:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:37:26,721 INFO L87 Difference]: Start difference. First operand 2666 states and 3428 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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) [2022-11-22 02:37:29,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:29,764 INFO L93 Difference]: Finished difference Result 5005 states and 6447 transitions. [2022-11-22 02:37:29,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:37:29,765 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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 57 [2022-11-22 02:37:29,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:29,771 INFO L225 Difference]: With dead ends: 5005 [2022-11-22 02:37:29,771 INFO L226 Difference]: Without dead ends: 4469 [2022-11-22 02:37:29,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:37:29,773 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 1906 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1906 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:29,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1906 Valid, 1917 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:37:29,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2022-11-22 02:37:30,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 2608. [2022-11-22 02:37:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 2605 states have (on average 1.2882917466410748) internal successors, (3356), 2607 states have internal predecessors, (3356), 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) [2022-11-22 02:37:30,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 3356 transitions. [2022-11-22 02:37:30,699 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 3356 transitions. Word has length 57 [2022-11-22 02:37:30,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:30,699 INFO L495 AbstractCegarLoop]: Abstraction has 2608 states and 3356 transitions. [2022-11-22 02:37:30,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 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) [2022-11-22 02:37:30,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 3356 transitions. [2022-11-22 02:37:30,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-22 02:37:30,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:30,701 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] [2022-11-22 02:37:30,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:37:30,702 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:30,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:30,702 INFO L85 PathProgramCache]: Analyzing trace with hash -45383322, now seen corresponding path program 1 times [2022-11-22 02:37:30,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:30,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424560285] [2022-11-22 02:37:30,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:30,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:30,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:30,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:30,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:30,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424560285] [2022-11-22 02:37:30,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424560285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:30,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:30,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:30,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173352255] [2022-11-22 02:37:30,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:30,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:30,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:30,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:30,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:30,765 INFO L87 Difference]: Start difference. First operand 2608 states and 3356 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-11-22 02:37:32,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:32,368 INFO L93 Difference]: Finished difference Result 4369 states and 5635 transitions. [2022-11-22 02:37:32,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:32,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2022-11-22 02:37:32,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:32,372 INFO L225 Difference]: With dead ends: 4369 [2022-11-22 02:37:32,372 INFO L226 Difference]: Without dead ends: 3010 [2022-11-22 02:37:32,373 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 [2022-11-22 02:37:32,374 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 220 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:32,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 349 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3010 states. [2022-11-22 02:37:33,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3010 to 2453. [2022-11-22 02:37:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 2451 states have (on average 1.2868217054263567) internal successors, (3154), 2452 states have internal predecessors, (3154), 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) [2022-11-22 02:37:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3154 transitions. [2022-11-22 02:37:33,192 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3154 transitions. Word has length 57 [2022-11-22 02:37:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:33,192 INFO L495 AbstractCegarLoop]: Abstraction has 2453 states and 3154 transitions. [2022-11-22 02:37:33,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2022-11-22 02:37:33,193 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3154 transitions. [2022-11-22 02:37:33,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-22 02:37:33,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:33,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:37:33,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:37:33,195 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:33,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1565233070, now seen corresponding path program 1 times [2022-11-22 02:37:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:33,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759663514] [2022-11-22 02:37:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:34,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:34,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759663514] [2022-11-22 02:37:34,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759663514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:34,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:34,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 02:37:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179824706] [2022-11-22 02:37:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:37:34,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:34,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:37:34,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:37:34,122 INFO L87 Difference]: Start difference. First operand 2453 states and 3154 transitions. Second operand has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 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) [2022-11-22 02:37:38,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:38,832 INFO L93 Difference]: Finished difference Result 5227 states and 6702 transitions. [2022-11-22 02:37:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-22 02:37:38,833 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 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 58 [2022-11-22 02:37:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:38,838 INFO L225 Difference]: With dead ends: 5227 [2022-11-22 02:37:38,838 INFO L226 Difference]: Without dead ends: 4976 [2022-11-22 02:37:38,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:37:38,842 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 1527 mSDsluCounter, 4370 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 4897 SdHoareTripleChecker+Invalid, 1743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:38,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 4897 Invalid, 1743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1733 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:37:38,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2022-11-22 02:37:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 2444. [2022-11-22 02:37:39,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2443 states have (on average 1.286123618501842) internal successors, (3142), 2443 states have internal predecessors, (3142), 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) [2022-11-22 02:37:39,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 3142 transitions. [2022-11-22 02:37:39,765 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 3142 transitions. Word has length 58 [2022-11-22 02:37:39,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:39,766 INFO L495 AbstractCegarLoop]: Abstraction has 2444 states and 3142 transitions. [2022-11-22 02:37:39,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.8666666666666667) internal successors, (58), 14 states have internal predecessors, (58), 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) [2022-11-22 02:37:39,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 3142 transitions. [2022-11-22 02:37:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-22 02:37:39,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:39,769 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] [2022-11-22 02:37:39,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 02:37:39,769 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:39,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:39,770 INFO L85 PathProgramCache]: Analyzing trace with hash -824691466, now seen corresponding path program 1 times [2022-11-22 02:37:39,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:39,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77574260] [2022-11-22 02:37:39,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:39,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:39,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:39,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:39,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77574260] [2022-11-22 02:37:39,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77574260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:39,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:39,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:37:39,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511527570] [2022-11-22 02:37:39,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:39,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:37:39,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:39,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:37:39,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:37:39,933 INFO L87 Difference]: Start difference. First operand 2444 states and 3142 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-11-22 02:37:40,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:40,933 INFO L93 Difference]: Finished difference Result 2450 states and 3145 transitions. [2022-11-22 02:37:40,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:37:40,934 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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 59 [2022-11-22 02:37:40,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:40,935 INFO L225 Difference]: With dead ends: 2450 [2022-11-22 02:37:40,936 INFO L226 Difference]: Without dead ends: 2091 [2022-11-22 02:37:40,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:37:40,937 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 532 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:40,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 681 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:40,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2091 states. [2022-11-22 02:37:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2091 to 2087. [2022-11-22 02:37:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2086 states have (on average 1.2847555129434325) internal successors, (2680), 2086 states have internal predecessors, (2680), 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) [2022-11-22 02:37:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2680 transitions. [2022-11-22 02:37:41,741 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2680 transitions. Word has length 59 [2022-11-22 02:37:41,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:41,741 INFO L495 AbstractCegarLoop]: Abstraction has 2087 states and 2680 transitions. [2022-11-22 02:37:41,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 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) [2022-11-22 02:37:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2680 transitions. [2022-11-22 02:37:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-22 02:37:41,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:41,744 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] [2022-11-22 02:37:41,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 02:37:41,744 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:41,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2048588624, now seen corresponding path program 1 times [2022-11-22 02:37:41,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:41,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030948571] [2022-11-22 02:37:41,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:41,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:41,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:41,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:41,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030948571] [2022-11-22 02:37:41,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030948571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:41,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:41,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:41,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465865696] [2022-11-22 02:37:41,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:41,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:41,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:41,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:41,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:41,856 INFO L87 Difference]: Start difference. First operand 2087 states and 2680 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-11-22 02:37:43,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:43,132 INFO L93 Difference]: Finished difference Result 4000 states and 5231 transitions. [2022-11-22 02:37:43,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:43,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-11-22 02:37:43,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:43,139 INFO L225 Difference]: With dead ends: 4000 [2022-11-22 02:37:43,139 INFO L226 Difference]: Without dead ends: 2888 [2022-11-22 02:37:43,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:43,142 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 112 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 473 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 [2022-11-22 02:37:43,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 473 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:37:43,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2022-11-22 02:37:44,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2694. [2022-11-22 02:37:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2694 states, 2693 states have (on average 1.2814704790196807) internal successors, (3451), 2693 states have internal predecessors, (3451), 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) [2022-11-22 02:37:44,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2694 states to 2694 states and 3451 transitions. [2022-11-22 02:37:44,303 INFO L78 Accepts]: Start accepts. Automaton has 2694 states and 3451 transitions. Word has length 60 [2022-11-22 02:37:44,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:44,303 INFO L495 AbstractCegarLoop]: Abstraction has 2694 states and 3451 transitions. [2022-11-22 02:37:44,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2022-11-22 02:37:44,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2694 states and 3451 transitions. [2022-11-22 02:37:44,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-22 02:37:44,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:44,306 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] [2022-11-22 02:37:44,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 02:37:44,306 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:44,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1781281903, now seen corresponding path program 1 times [2022-11-22 02:37:44,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:44,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023643099] [2022-11-22 02:37:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:44,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:44,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:44,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:44,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023643099] [2022-11-22 02:37:44,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023643099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:44,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:44,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:44,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822830133] [2022-11-22 02:37:44,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:44,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:44,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:44,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:44,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:44,442 INFO L87 Difference]: Start difference. First operand 2694 states and 3451 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) [2022-11-22 02:37:46,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:46,602 INFO L93 Difference]: Finished difference Result 5464 states and 7121 transitions. [2022-11-22 02:37:46,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:46,603 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 [2022-11-22 02:37:46,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:46,607 INFO L225 Difference]: With dead ends: 5464 [2022-11-22 02:37:46,607 INFO L226 Difference]: Without dead ends: 3906 [2022-11-22 02:37:46,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:46,609 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 100 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:46,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 461 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:37:46,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3906 states. [2022-11-22 02:37:48,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3906 to 3532. [2022-11-22 02:37:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 3531 states have (on average 1.2761257434154631) internal successors, (4506), 3531 states have internal predecessors, (4506), 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) [2022-11-22 02:37:48,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4506 transitions. [2022-11-22 02:37:48,111 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4506 transitions. Word has length 63 [2022-11-22 02:37:48,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:48,111 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 4506 transitions. [2022-11-22 02:37:48,111 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) [2022-11-22 02:37:48,111 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4506 transitions. [2022-11-22 02:37:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-22 02:37:48,113 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:48,113 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] [2022-11-22 02:37:48,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 02:37:48,114 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:48,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:48,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1771456890, now seen corresponding path program 1 times [2022-11-22 02:37:48,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:48,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853680533] [2022-11-22 02:37:48,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:48,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:48,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:48,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:48,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853680533] [2022-11-22 02:37:48,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853680533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:48,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:48,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:37:48,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590328978] [2022-11-22 02:37:48,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:48,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:37:48,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:37:48,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:48,224 INFO L87 Difference]: Start difference. First operand 3532 states and 4506 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 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) [2022-11-22 02:37:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:51,002 INFO L93 Difference]: Finished difference Result 7400 states and 9585 transitions. [2022-11-22 02:37:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:37:51,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 [2022-11-22 02:37:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:51,008 INFO L225 Difference]: With dead ends: 7400 [2022-11-22 02:37:51,009 INFO L226 Difference]: Without dead ends: 5292 [2022-11-22 02:37:51,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:37:51,011 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 78 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:51,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 451 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:37:51,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2022-11-22 02:37:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 4794. [2022-11-22 02:37:53,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4794 states, 4793 states have (on average 1.2695597746713958) internal successors, (6085), 4793 states have internal predecessors, (6085), 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) [2022-11-22 02:37:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4794 states to 4794 states and 6085 transitions. [2022-11-22 02:37:53,088 INFO L78 Accepts]: Start accepts. Automaton has 4794 states and 6085 transitions. Word has length 67 [2022-11-22 02:37:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:37:53,088 INFO L495 AbstractCegarLoop]: Abstraction has 4794 states and 6085 transitions. [2022-11-22 02:37:53,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2022-11-22 02:37:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4794 states and 6085 transitions. [2022-11-22 02:37:53,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 02:37:53,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:37:53,091 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] [2022-11-22 02:37:53,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 02:37:53,092 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:37:53,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:37:53,092 INFO L85 PathProgramCache]: Analyzing trace with hash 646379877, now seen corresponding path program 1 times [2022-11-22 02:37:53,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:37:53,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374225717] [2022-11-22 02:37:53,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:37:53,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:37:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:37:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:37:53,433 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:37:53,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374225717] [2022-11-22 02:37:53,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374225717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:37:53,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:37:53,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:37:53,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727532067] [2022-11-22 02:37:53,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:37:53,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:37:53,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:37:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:37:53,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:37:53,436 INFO L87 Difference]: Start difference. First operand 4794 states and 6085 transitions. Second operand has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 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) [2022-11-22 02:37:58,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:37:58,300 INFO L93 Difference]: Finished difference Result 8417 states and 10694 transitions. [2022-11-22 02:37:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-22 02:37:58,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 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 [2022-11-22 02:37:58,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:37:58,312 INFO L225 Difference]: With dead ends: 8417 [2022-11-22 02:37:58,312 INFO L226 Difference]: Without dead ends: 8415 [2022-11-22 02:37:58,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:37:58,315 INFO L413 NwaCegarLoop]: 324 mSDtfsCounter, 1223 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1223 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:37:58,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1223 Valid, 1673 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:37:58,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8415 states. [2022-11-22 02:38:01,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8415 to 5557. [2022-11-22 02:38:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5557 states, 5556 states have (on average 1.2649388048956083) internal successors, (7028), 5556 states have internal predecessors, (7028), 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) [2022-11-22 02:38:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5557 states to 5557 states and 7028 transitions. [2022-11-22 02:38:01,036 INFO L78 Accepts]: Start accepts. Automaton has 5557 states and 7028 transitions. Word has length 71 [2022-11-22 02:38:01,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:38:01,037 INFO L495 AbstractCegarLoop]: Abstraction has 5557 states and 7028 transitions. [2022-11-22 02:38:01,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 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) [2022-11-22 02:38:01,037 INFO L276 IsEmpty]: Start isEmpty. Operand 5557 states and 7028 transitions. [2022-11-22 02:38:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-22 02:38:01,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:38:01,040 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] [2022-11-22 02:38:01,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 02:38:01,041 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:38:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:38:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash 32958681, now seen corresponding path program 1 times [2022-11-22 02:38:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:38:01,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730284488] [2022-11-22 02:38:01,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:38:01,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:38:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:38:01,167 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:38:01,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730284488] [2022-11-22 02:38:01,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730284488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:38:01,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:38:01,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:38:01,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440703706] [2022-11-22 02:38:01,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:38:01,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:38:01,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:38:01,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:38:01,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:38:01,170 INFO L87 Difference]: Start difference. First operand 5557 states and 7028 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) 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) [2022-11-22 02:38:09,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:38:09,914 INFO L93 Difference]: Finished difference Result 16809 states and 21414 transitions. [2022-11-22 02:38:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:38:09,915 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) 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 [2022-11-22 02:38:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:38:09,935 INFO L225 Difference]: With dead ends: 16809 [2022-11-22 02:38:09,935 INFO L226 Difference]: Without dead ends: 15175 [2022-11-22 02:38:09,939 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 [2022-11-22 02:38:09,940 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 1861 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:38:09,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 439 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:38:09,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15175 states. [2022-11-22 02:38:12,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15175 to 5602. [2022-11-22 02:38:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5602 states, 5601 states have (on average 1.2640599892876272) internal successors, (7080), 5601 states have internal predecessors, (7080), 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) [2022-11-22 02:38:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5602 states to 5602 states and 7080 transitions. [2022-11-22 02:38:12,825 INFO L78 Accepts]: Start accepts. Automaton has 5602 states and 7080 transitions. Word has length 74 [2022-11-22 02:38:12,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:38:12,825 INFO L495 AbstractCegarLoop]: Abstraction has 5602 states and 7080 transitions. [2022-11-22 02:38:12,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) 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) [2022-11-22 02:38:12,826 INFO L276 IsEmpty]: Start isEmpty. Operand 5602 states and 7080 transitions. [2022-11-22 02:38:12,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-22 02:38:12,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:38:12,828 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] [2022-11-22 02:38:12,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 02:38:12,829 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:38:12,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:38:12,829 INFO L85 PathProgramCache]: Analyzing trace with hash 129217219, now seen corresponding path program 1 times [2022-11-22 02:38:12,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:38:12,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012666770] [2022-11-22 02:38:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:38:12,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:38:12,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:13,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:38:13,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:38:13,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012666770] [2022-11-22 02:38:13,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012666770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:38:13,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:38:13,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:38:13,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794027009] [2022-11-22 02:38:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:38:13,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:38:13,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:38:13,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:38:13,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:38:13,151 INFO L87 Difference]: Start difference. First operand 5602 states and 7080 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2022-11-22 02:38:17,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:38:17,846 INFO L93 Difference]: Finished difference Result 8299 states and 10539 transitions. [2022-11-22 02:38:17,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:38:17,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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 [2022-11-22 02:38:17,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:38:17,856 INFO L225 Difference]: With dead ends: 8299 [2022-11-22 02:38:17,856 INFO L226 Difference]: Without dead ends: 8297 [2022-11-22 02:38:17,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:38:17,858 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 955 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:38:17,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1511 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:38:17,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8297 states. [2022-11-22 02:38:20,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8297 to 5858. [2022-11-22 02:38:20,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 5857 states have (on average 1.2622502987877753) internal successors, (7393), 5857 states have internal predecessors, (7393), 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) [2022-11-22 02:38:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 7393 transitions. [2022-11-22 02:38:20,852 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 7393 transitions. Word has length 76 [2022-11-22 02:38:20,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:38:20,852 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 7393 transitions. [2022-11-22 02:38:20,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 9 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) [2022-11-22 02:38:20,853 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 7393 transitions. [2022-11-22 02:38:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 02:38:20,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:38:20,855 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] [2022-11-22 02:38:20,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-22 02:38:20,856 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:38:20,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:38:20,857 INFO L85 PathProgramCache]: Analyzing trace with hash 959345748, now seen corresponding path program 1 times [2022-11-22 02:38:20,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:38:20,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750863965] [2022-11-22 02:38:20,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:38:20,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:38:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:38:20,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:38:20,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750863965] [2022-11-22 02:38:20,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750863965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:38:20,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:38:20,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:38:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674760006] [2022-11-22 02:38:20,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:38:20,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:38:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:38:20,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:38:20,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:38:20,923 INFO L87 Difference]: Start difference. First operand 5858 states and 7393 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) [2022-11-22 02:38:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:38:24,557 INFO L93 Difference]: Finished difference Result 8664 states and 10965 transitions. [2022-11-22 02:38:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:38:24,557 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 [2022-11-22 02:38:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:38:24,564 INFO L225 Difference]: With dead ends: 8664 [2022-11-22 02:38:24,564 INFO L226 Difference]: Without dead ends: 6135 [2022-11-22 02:38:24,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:38:24,568 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 185 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:38:24,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 304 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:38:24,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6135 states. [2022-11-22 02:38:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6135 to 5517. [2022-11-22 02:38:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5517 states, 5516 states have (on average 1.2576142131979695) internal successors, (6937), 5516 states have internal predecessors, (6937), 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) [2022-11-22 02:38:27,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 6937 transitions. [2022-11-22 02:38:27,434 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 6937 transitions. Word has length 77 [2022-11-22 02:38:27,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:38:27,434 INFO L495 AbstractCegarLoop]: Abstraction has 5517 states and 6937 transitions. [2022-11-22 02:38:27,434 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) [2022-11-22 02:38:27,435 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 6937 transitions. [2022-11-22 02:38:27,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 02:38:27,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:38:27,437 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] [2022-11-22 02:38:27,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-22 02:38:27,437 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:38:27,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:38:27,438 INFO L85 PathProgramCache]: Analyzing trace with hash 267227171, now seen corresponding path program 1 times [2022-11-22 02:38:27,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:38:27,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992897326] [2022-11-22 02:38:27,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:38:27,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:38:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:27,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:38:27,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:38:27,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992897326] [2022-11-22 02:38:27,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992897326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:38:27,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:38:27,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:38:27,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542380622] [2022-11-22 02:38:27,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:38:27,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:38:27,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:38:27,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:38:27,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:38:27,786 INFO L87 Difference]: Start difference. First operand 5517 states and 6937 transitions. Second operand has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2022-11-22 02:38:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:38:32,554 INFO L93 Difference]: Finished difference Result 7827 states and 9896 transitions. [2022-11-22 02:38:32,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:38:32,555 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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 [2022-11-22 02:38:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:38:32,563 INFO L225 Difference]: With dead ends: 7827 [2022-11-22 02:38:32,563 INFO L226 Difference]: Without dead ends: 7825 [2022-11-22 02:38:32,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:38:32,566 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 822 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:38:32,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1633 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:38:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7825 states. [2022-11-22 02:38:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7825 to 5717. [2022-11-22 02:38:35,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5717 states, 5716 states have (on average 1.2568229531140658) internal successors, (7184), 5716 states have internal predecessors, (7184), 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) [2022-11-22 02:38:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5717 states to 5717 states and 7184 transitions. [2022-11-22 02:38:35,869 INFO L78 Accepts]: Start accepts. Automaton has 5717 states and 7184 transitions. Word has length 77 [2022-11-22 02:38:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:38:35,869 INFO L495 AbstractCegarLoop]: Abstraction has 5717 states and 7184 transitions. [2022-11-22 02:38:35,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.555555555555555) internal successors, (77), 9 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) [2022-11-22 02:38:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states and 7184 transitions. [2022-11-22 02:38:35,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:38:35,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:38:35,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:38:35,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-22 02:38:35,872 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:38:35,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:38:35,873 INFO L85 PathProgramCache]: Analyzing trace with hash -478454651, now seen corresponding path program 1 times [2022-11-22 02:38:35,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:38:35,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493586774] [2022-11-22 02:38:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:38:35,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:38:35,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:38:36,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:38:36,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493586774] [2022-11-22 02:38:36,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493586774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:38:36,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:38:36,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:38:36,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114011394] [2022-11-22 02:38:36,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:38:36,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:38:36,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:38:36,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:38:36,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:38:36,169 INFO L87 Difference]: Start difference. First operand 5717 states and 7184 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 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) [2022-11-22 02:38:42,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:38:42,567 INFO L93 Difference]: Finished difference Result 12068 states and 15114 transitions. [2022-11-22 02:38:42,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:38:42,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 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 81 [2022-11-22 02:38:42,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:38:42,579 INFO L225 Difference]: With dead ends: 12068 [2022-11-22 02:38:42,579 INFO L226 Difference]: Without dead ends: 9377 [2022-11-22 02:38:42,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:38:42,583 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 841 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:38:42,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 826 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:38:42,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9377 states. [2022-11-22 02:38:45,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9377 to 5652. [2022-11-22 02:38:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5652 states, 5651 states have (on average 1.258007432312865) internal successors, (7109), 5651 states have internal predecessors, (7109), 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) [2022-11-22 02:38:45,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5652 states to 5652 states and 7109 transitions. [2022-11-22 02:38:45,961 INFO L78 Accepts]: Start accepts. Automaton has 5652 states and 7109 transitions. Word has length 81 [2022-11-22 02:38:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:38:45,961 INFO L495 AbstractCegarLoop]: Abstraction has 5652 states and 7109 transitions. [2022-11-22 02:38:45,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 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) [2022-11-22 02:38:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 5652 states and 7109 transitions. [2022-11-22 02:38:45,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:38:45,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:38:45,964 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:38:45,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-22 02:38:45,964 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:38:45,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:38:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -87285327, now seen corresponding path program 1 times [2022-11-22 02:38:45,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:38:45,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784043396] [2022-11-22 02:38:45,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:38:45,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:38:45,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:46,246 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:38:46,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:38:46,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784043396] [2022-11-22 02:38:46,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784043396] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:38:46,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:38:46,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:38:46,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631654133] [2022-11-22 02:38:46,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:38:46,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:38:46,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:38:46,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:38:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:38:46,249 INFO L87 Difference]: Start difference. First operand 5652 states and 7109 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 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) [2022-11-22 02:38:53,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:38:53,225 INFO L93 Difference]: Finished difference Result 12721 states and 15986 transitions. [2022-11-22 02:38:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:38:53,226 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 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 81 [2022-11-22 02:38:53,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:38:53,238 INFO L225 Difference]: With dead ends: 12721 [2022-11-22 02:38:53,238 INFO L226 Difference]: Without dead ends: 10157 [2022-11-22 02:38:53,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:38:53,243 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 687 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:38:53,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 945 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:38:53,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10157 states. [2022-11-22 02:38:56,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10157 to 5582. [2022-11-22 02:38:56,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5582 states, 5581 states have (on average 1.2590933524457983) internal successors, (7027), 5581 states have internal predecessors, (7027), 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) [2022-11-22 02:38:56,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5582 states to 5582 states and 7027 transitions. [2022-11-22 02:38:56,500 INFO L78 Accepts]: Start accepts. Automaton has 5582 states and 7027 transitions. Word has length 81 [2022-11-22 02:38:56,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:38:56,501 INFO L495 AbstractCegarLoop]: Abstraction has 5582 states and 7027 transitions. [2022-11-22 02:38:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 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) [2022-11-22 02:38:56,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5582 states and 7027 transitions. [2022-11-22 02:38:56,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 02:38:56,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:38:56,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:38:56,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-22 02:38:56,504 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:38:56,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:38:56,505 INFO L85 PathProgramCache]: Analyzing trace with hash 2031381794, now seen corresponding path program 1 times [2022-11-22 02:38:56,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:38:56,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964146438] [2022-11-22 02:38:56,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:38:56,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:38:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:57,563 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:38:57,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:38:57,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964146438] [2022-11-22 02:38:57,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964146438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:38:57,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633513312] [2022-11-22 02:38:57,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:38:57,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:38:57,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:38:57,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:38:57,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:38:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:38:57,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-22 02:38:57,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:39:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:39:00,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:39:00,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633513312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:00,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:39:00,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 27 [2022-11-22 02:39:00,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881765911] [2022-11-22 02:39:00,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:00,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:39:00,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:00,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:39:00,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:39:00,480 INFO L87 Difference]: Start difference. First operand 5582 states and 7027 transitions. Second operand has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 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) [2022-11-22 02:39:09,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:09,795 INFO L93 Difference]: Finished difference Result 10756 states and 13578 transitions. [2022-11-22 02:39:09,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 02:39:09,796 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 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 82 [2022-11-22 02:39:09,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:09,805 INFO L225 Difference]: With dead ends: 10756 [2022-11-22 02:39:09,805 INFO L226 Difference]: Without dead ends: 8761 [2022-11-22 02:39:09,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2022-11-22 02:39:09,809 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 1619 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1619 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:09,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1619 Valid, 2114 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:39:09,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8761 states. [2022-11-22 02:39:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8761 to 6260. [2022-11-22 02:39:13,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6260 states, 6259 states have (on average 1.260744527879853) internal successors, (7891), 6259 states have internal predecessors, (7891), 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) [2022-11-22 02:39:13,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6260 states to 6260 states and 7891 transitions. [2022-11-22 02:39:13,822 INFO L78 Accepts]: Start accepts. Automaton has 6260 states and 7891 transitions. Word has length 82 [2022-11-22 02:39:13,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:13,822 INFO L495 AbstractCegarLoop]: Abstraction has 6260 states and 7891 transitions. [2022-11-22 02:39:13,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 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) [2022-11-22 02:39:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand 6260 states and 7891 transitions. [2022-11-22 02:39:13,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 02:39:13,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:13,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:39:13,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:39:14,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:39:14,025 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:39:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:14,026 INFO L85 PathProgramCache]: Analyzing trace with hash -599336130, now seen corresponding path program 1 times [2022-11-22 02:39:14,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:14,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422786677] [2022-11-22 02:39:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:14,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:15,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:39:15,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:15,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422786677] [2022-11-22 02:39:15,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422786677] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:39:15,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602684036] [2022-11-22 02:39:15,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:15,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:39:15,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:39:15,135 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:39:15,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:39:15,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:15,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-22 02:39:15,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:39:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:39:16,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:39:16,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602684036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:16,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:39:16,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 23 [2022-11-22 02:39:16,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250211305] [2022-11-22 02:39:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:16,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:39:16,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:16,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:39:16,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:39:16,678 INFO L87 Difference]: Start difference. First operand 6260 states and 7891 transitions. Second operand has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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) [2022-11-22 02:39:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:22,337 INFO L93 Difference]: Finished difference Result 8804 states and 11097 transitions. [2022-11-22 02:39:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 02:39:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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 82 [2022-11-22 02:39:22,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:22,348 INFO L225 Difference]: With dead ends: 8804 [2022-11-22 02:39:22,348 INFO L226 Difference]: Without dead ends: 7480 [2022-11-22 02:39:22,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:39:22,352 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 674 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:22,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1173 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:39:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2022-11-22 02:39:26,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 6339. [2022-11-22 02:39:26,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6339 states, 6338 states have (on average 1.2609656042915747) internal successors, (7992), 6338 states have internal predecessors, (7992), 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) [2022-11-22 02:39:26,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6339 states to 6339 states and 7992 transitions. [2022-11-22 02:39:26,550 INFO L78 Accepts]: Start accepts. Automaton has 6339 states and 7992 transitions. Word has length 82 [2022-11-22 02:39:26,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:26,551 INFO L495 AbstractCegarLoop]: Abstraction has 6339 states and 7992 transitions. [2022-11-22 02:39:26,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.666666666666666) internal successors, (78), 8 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) [2022-11-22 02:39:26,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6339 states and 7992 transitions. [2022-11-22 02:39:26,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-22 02:39:26,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:26,553 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:39:26,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-22 02:39:26,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:39:26,763 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:39:26,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:26,764 INFO L85 PathProgramCache]: Analyzing trace with hash -2077845540, now seen corresponding path program 1 times [2022-11-22 02:39:26,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:26,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096599721] [2022-11-22 02:39:26,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:26,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:39:27,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:27,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096599721] [2022-11-22 02:39:27,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096599721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:39:27,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30595412] [2022-11-22 02:39:27,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:27,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:39:27,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:39:27,769 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:39:27,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:39:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:28,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-22 02:39:28,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:39:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:39:30,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:39:30,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30595412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:30,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:39:30,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [16] total 27 [2022-11-22 02:39:30,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360334888] [2022-11-22 02:39:30,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:30,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:39:30,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:30,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:39:30,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:39:30,163 INFO L87 Difference]: Start difference. First operand 6339 states and 7992 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 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) [2022-11-22 02:39:40,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:40,286 INFO L93 Difference]: Finished difference Result 12736 states and 16053 transitions. [2022-11-22 02:39:40,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-22 02:39:40,286 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 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 82 [2022-11-22 02:39:40,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:40,297 INFO L225 Difference]: With dead ends: 12736 [2022-11-22 02:39:40,297 INFO L226 Difference]: Without dead ends: 10133 [2022-11-22 02:39:40,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=287, Invalid=1519, Unknown=0, NotChecked=0, Total=1806 [2022-11-22 02:39:40,301 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1683 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1683 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:40,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1683 Valid, 2694 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:39:40,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10133 states. [2022-11-22 02:39:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10133 to 6944. [2022-11-22 02:39:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6944 states, 6943 states have (on average 1.2598300446492872) internal successors, (8747), 6943 states have internal predecessors, (8747), 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) [2022-11-22 02:39:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6944 states to 6944 states and 8747 transitions. [2022-11-22 02:39:45,072 INFO L78 Accepts]: Start accepts. Automaton has 6944 states and 8747 transitions. Word has length 82 [2022-11-22 02:39:45,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:45,073 INFO L495 AbstractCegarLoop]: Abstraction has 6944 states and 8747 transitions. [2022-11-22 02:39:45,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 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) [2022-11-22 02:39:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 6944 states and 8747 transitions. [2022-11-22 02:39:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-22 02:39:45,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:45,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:39:45,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:39:45,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-22 02:39:45,281 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:39:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash -474405653, now seen corresponding path program 1 times [2022-11-22 02:39:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:45,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407677440] [2022-11-22 02:39:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:45,351 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-22 02:39:45,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:45,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407677440] [2022-11-22 02:39:45,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407677440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:45,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:45,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:39:45,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406028707] [2022-11-22 02:39:45,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:45,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:39:45,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:45,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:39:45,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:39:45,354 INFO L87 Difference]: Start difference. First operand 6944 states and 8747 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2022-11-22 02:39:52,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:52,555 INFO L93 Difference]: Finished difference Result 14473 states and 18358 transitions. [2022-11-22 02:39:52,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:39:52,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 85 [2022-11-22 02:39:52,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:52,567 INFO L225 Difference]: With dead ends: 14473 [2022-11-22 02:39:52,567 INFO L226 Difference]: Without dead ends: 10074 [2022-11-22 02:39:52,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:39:52,572 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 301 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:52,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 448 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:39:52,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10074 states. [2022-11-22 02:39:57,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10074 to 6760. [2022-11-22 02:39:57,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 6759 states have (on average 1.2445628051486906) internal successors, (8412), 6759 states have internal predecessors, (8412), 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) [2022-11-22 02:39:57,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 8412 transitions. [2022-11-22 02:39:57,429 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 8412 transitions. Word has length 85 [2022-11-22 02:39:57,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:57,429 INFO L495 AbstractCegarLoop]: Abstraction has 6760 states and 8412 transitions. [2022-11-22 02:39:57,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2022-11-22 02:39:57,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 8412 transitions. [2022-11-22 02:39:57,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-22 02:39:57,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:57,431 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:39:57,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-22 02:39:57,431 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-11-22 02:39:57,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:57,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1938477210, now seen corresponding path program 1 times [2022-11-22 02:39:57,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:57,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355144076] [2022-11-22 02:39:57,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:57,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:39:58,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:58,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355144076] [2022-11-22 02:39:58,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355144076] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:39:58,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074317035] [2022-11-22 02:39:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:58,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:39:58,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:39:58,445 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:39:58,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2d964a5-de15-43da-8d3e-a33903d19e61/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-22 02:39:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:58,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-22 02:39:58,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:03,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:03,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:40:23,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:23,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074317035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:40:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1384567241] [2022-11-22 02:40:23,201 INFO L159 IcfgInterpreter]: Started Sifa with 79 locations of interest [2022-11-22 02:40:23,201 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:40:23,207 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:40:23,213 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:40:23,213 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:40:23,495 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:40:23,496 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:40:23,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:40:23,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:40:23,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:40:23,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:40:23,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-22 02:40:58,441 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:42:33,207 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 443 DAG size of output: 312 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:41,296 WARN L233 SmtUtils]: Spent 7.28s on a formula simplification. DAG size of input: 444 DAG size of output: 313 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:49,146 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 447 DAG size of output: 316 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:56,830 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 450 DAG size of output: 319 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:43:04,534 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 453 DAG size of output: 322 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:43:11,627 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 455 DAG size of output: 324 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:43:18,747 WARN L233 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 458 DAG size of output: 325 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:43:25,755 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 460 DAG size of output: 329 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:43:57,238 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '582600#(and (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~2#1| 127) (= ~__return_7586~0 0) (= ~__return_7013~0 0) (= ~__return_7777~0 0) (<= 0 ~id3~0) (<= 1 ~__tmp_6472_0~0) (= ~__return_7743~0 0) (<= 0 (+ ~p3_new~0 1)) (<= 1 ~__return_6462~0) (= ~__return_7619~0 0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~2#1|) (= ~__return_8779~0 0) (= ~__return_8714~0 0) (<= ~__return_6532~0 1) (= ~__return_6546~0 0) (= ~__return_7310~0 0) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~8#1| 1)) (<= 0 |ULTIMATE.start_main_~__tmp_3~0#1|) (= ~__return_7817~0 0) (= ~__return_6844~0 0) (= ~__return_8484~0 0) (<= |ULTIMATE.start_main_~__tmp_3~0#1| 1) (= ~__return_7534~0 0) (<= 0 ~id1~0) (= |ULTIMATE.start_main_~check__tmp~24#1| 1) (= |ULTIMATE.start_main_~check__tmp~1#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~2#1| 1)) (= ~__return_7443~0 0) (= ~__return_8240~0 0) (= ~p2~0 0) (<= (+ ~p1_new~0 1) 0) (<= |ULTIMATE.start_main_~main__c1~0#1| 1) (= ~__return_8596~0 0) (= ~__return_8173~0 0) (= ~__return_7192~0 0) (= ~__return_7927~0 0) (= ~__return_6399~0 0) (<= ~__tmp_6472_0~0 1) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~1#1| 1)) (<= ~send1~0 127) (= ~__return_7341~0 0) (<= ~st1~0 0) (= ~__return_7161~0 0) (<= 0 ~__tmp_6409_0~0) (= ~__return_7844~0 0) (<= 1 ~__tmp_6533_0~0) (<= 0 (+ ~p3_old~0 1)) (= ~__return_8303~0 0) (= ~__return_7653~0 0) (= ~__return_7278~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_24~0#1|) (= ~__return_8419~0 0) (= (mod |ULTIMATE.start_main_~assert__arg~2#1| 256) 0) (<= ~mode2~0 1) (= ~__return_7497~0 0) (= ~__return_7046~0 0) (<= |ULTIMATE.start_main_~check__tmp~2#1| 1) (<= 0 ~st1~0) (= ~__return_7080~0 0) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~20#1|) (= ~__return_8337~0 0) (= ~__return_6936~0 0) (<= 1 ~__return_7990~0) (<= 0 ~st2~0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 0) (<= ~mode3~0 1) (<= 0 |ULTIMATE.start_main_~assert__arg~23#1|) (= ~__return_8630~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= ~id1~0 127) (<= (+ ~p3_old~0 1) 0) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (= ~__return_8139~0 0) (= ~__return_7703~0 0) (<= 0 (+ ~p2_new~0 1)) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (<= 2 |ULTIMATE.start_main_~main__i2~0#1|) (<= ~__return_6462~0 1) (<= (+ ~nomsg~0 1) 0) (<= 1 ~__return_6321~0) (<= ~mode1~0 1) (= ~__return_8076~0 0) (= ~__return_7226~0 0) (<= (+ ~p2_new~0 1) 0) (<= (+ |ULTIMATE.start_main_~node1__m1~2#1| 1) 0) (<= ~__return_7990~0 1) (<= 1 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~1#1|) (<= ~__tmp_6409_0~0 0) (= ~__return_6810~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~8#1| 1) 0) (<= 0 ~__return_6755~0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (<= ~__return_8024~0 0) (= ~__return_7129~0 0) (<= 1 ~__tmp_6490_0~0) (<= ~id3~0 127) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~20#1| 0) (<= |ULTIMATE.start_main_~assert__arg~23#1| 1) (<= 0 ~id2~0) (= ~__return_8565~0 0) (= |#NULL.offset| 0) (<= 0 (+ ~nomsg~0 1)) (<= ~__return_6755~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~1#1| 1) 0) (= ~__return_8272~0 0) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1| 127) (<= 0 |ULTIMATE.start_main_~assert__arg~2#1|) (<= |ULTIMATE.start_main_~__tmp_24~0#1| 1) (<= (+ |ULTIMATE.start_main_~node1__m1~1#1| 1) 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (= ~__return_7375~0 0) (= ~__return_7878~0 0) (<= 0 ~__return_6689~0) (<= (+ ~p3_new~0 1) 0) (= ~__return_6973~0 0) (<= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~0#1| 1)) (= ~__return_7959~0 0) (= ~p3~0 0) (<= 0 (+ ~p1_new~0 1)) (= ~__return_8682~0 0) (= ~__return_8450~0 0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1|) (= ~p1~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 ~send1~0) (<= ~__return_6321~0 1) (= ~__return_8745~0 0) (<= (+ |ULTIMATE.start_main_~node2__m2~0#1| 1) 0) (<= 0 ~__return_8024~0) (= ~__return_main~0 0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~1#1| 1)) (<= ~__return_6689~0 0) (<= |ULTIMATE.start_main_~assert__arg~2#1| 1) (= ~__return_8533~0 0) (= ~__return_6894~0 0) (<= 1 |ULTIMATE.start_main_~init__tmp~0#1|) (= |#NULL.base| 0) (= ~__return_8387~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|) (= ~__return_8108~0 0))' at error location [2022-11-22 02:43:57,238 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:43:57,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:43:57,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25, 25] total 63 [2022-11-22 02:43:57,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523070240] [2022-11-22 02:43:57,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:43:57,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-22 02:43:57,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:57,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-22 02:43:57,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2251, Invalid=13751, Unknown=0, NotChecked=0, Total=16002 [2022-11-22 02:43:57,245 INFO L87 Difference]: Start difference. First operand 6760 states and 8412 transitions. Second operand has 63 states, 63 states have (on average 4.0) internal successors, (252), 63 states have internal predecessors, (252), 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)