./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.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_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/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_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/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_a339661e-0f7a-49e6-8b12-14333627c7b0/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 8903dcb91a7500453f98b743541ef164d589c2f5828e51ac11fb5ea90b79c3dd --- 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 02:39:45,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:39:45,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:39:46,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:39:46,004 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:39:46,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:39:46,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:39:46,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:39:46,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:39:46,021 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:39:46,022 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:39:46,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:39:46,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:39:46,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:39:46,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:39:46,031 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:39:46,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:39:46,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:39:46,035 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:39:46,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:39:46,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:39:46,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:39:46,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:39:46,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:39:46,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:39:46,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:39:46,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:39:46,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:39:46,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:39:46,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:39:46,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:39:46,065 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:39:46,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:39:46,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:39:46,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:39:46,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:39:46,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:39:46,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:39:46,072 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:39:46,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:39:46,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:39:46,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:39:46,115 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:39:46,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:39:46,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:39:46,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:39:46,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:39:46,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:39:46,118 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:39:46,118 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:39:46,118 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:39:46,118 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:39:46,119 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:39:46,120 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:39:46,120 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:39:46,120 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:39:46,120 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:39:46,121 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:39:46,121 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:39:46,121 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:39:46,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:39:46,122 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:39:46,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:39:46,122 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:39:46,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:39:46,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:39:46,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:39:46,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:39:46,123 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:39:46,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:39:46,124 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:39:46,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:39:46,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:39:46,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:39:46,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:39:46,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:39:46,125 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:39:46,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:39:46,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:39:46,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:39:46,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:39:46,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:39:46,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:39:46,127 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_a339661e-0f7a-49e6-8b12-14333627c7b0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8903dcb91a7500453f98b743541ef164d589c2f5828e51ac11fb5ea90b79c3dd [2022-11-22 02:39:46,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:39:46,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:39:46,458 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:39:46,460 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:39:46,460 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:39:46,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-22 02:39:49,471 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:39:49,821 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:39:49,822 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-22 02:39:49,839 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/data/e5efd779a/2001e2a17e34412289dd0d02eaefb87c/FLAG2dc76e48d [2022-11-22 02:39:49,854 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/data/e5efd779a/2001e2a17e34412289dd0d02eaefb87c [2022-11-22 02:39:49,857 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:39:49,858 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:39:49,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:39:49,860 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:39:49,864 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:39:49,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:39:49" (1/1) ... [2022-11-22 02:39:49,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c0ad556 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:49, skipping insertion in model container [2022-11-22 02:39:49,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:39:49" (1/1) ... [2022-11-22 02:39:49,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:39:49,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:39:50,185 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2022-11-22 02:39:50,219 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2022-11-22 02:39:50,228 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2022-11-22 02:39:50,238 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2022-11-22 02:39:50,258 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2022-11-22 02:39:50,265 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2022-11-22 02:39:50,274 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2022-11-22 02:39:50,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:39:50,353 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:39:50,429 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2022-11-22 02:39:50,456 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2022-11-22 02:39:50,470 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2022-11-22 02:39:50,490 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2022-11-22 02:39:50,497 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2022-11-22 02:39:50,501 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2022-11-22 02:39:50,505 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_a339661e-0f7a-49e6-8b12-14333627c7b0/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2022-11-22 02:39:50,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:39:50,558 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:39:50,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50 WrapperNode [2022-11-22 02:39:50,559 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:39:50,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:39:50,560 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:39:50,560 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:39:50,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,640 INFO L138 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1018 [2022-11-22 02:39:50,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:39:50,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:39:50,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:39:50,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:39:50,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,703 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,725 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:39:50,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:39:50,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:39:50,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:39:50,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (1/1) ... [2022-11-22 02:39:50,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:39:50,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:39:50,765 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:39:50,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:39:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:39:50,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:39:50,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:39:50,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:39:51,037 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:39:51,039 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:39:51,899 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:39:51,971 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:39:51,971 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:39:51,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:39:51 BoogieIcfgContainer [2022-11-22 02:39:51,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:39:51,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:39:51,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:39:51,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:39:51,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:39:49" (1/3) ... [2022-11-22 02:39:51,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2af2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:39:51, skipping insertion in model container [2022-11-22 02:39:51,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:39:50" (2/3) ... [2022-11-22 02:39:51,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2af2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:39:51, skipping insertion in model container [2022-11-22 02:39:51,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:39:51" (3/3) ... [2022-11-22 02:39:51,984 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-11-22 02:39:52,004 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:39:52,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-11-22 02:39:52,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:39:52,065 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;@55fbad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:39:52,066 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-22 02:39:52,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 192 states, 184 states have (on average 1.8315217391304348) internal successors, (337), 191 states have internal predecessors, (337), 0 states have call successors, (0), 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 02:39:52,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-22 02:39:52,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:52,082 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] [2022-11-22 02:39:52,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:39:52,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:52,091 INFO L85 PathProgramCache]: Analyzing trace with hash -89848275, now seen corresponding path program 1 times [2022-11-22 02:39:52,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:52,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324291481] [2022-11-22 02:39:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:52,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:52,622 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 02:39:52,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:52,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324291481] [2022-11-22 02:39:52,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324291481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:52,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:52,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:39:52,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828690230] [2022-11-22 02:39:52,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:52,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:39:52,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:52,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:39:52,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:39:52,663 INFO L87 Difference]: Start difference. First operand has 192 states, 184 states have (on average 1.8315217391304348) internal successors, (337), 191 states have internal predecessors, (337), 0 states have call successors, (0), 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 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:39:52,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:52,978 INFO L93 Difference]: Finished difference Result 308 states and 517 transitions. [2022-11-22 02:39:52,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:39:52,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-11-22 02:39:52,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:52,999 INFO L225 Difference]: With dead ends: 308 [2022-11-22 02:39:52,999 INFO L226 Difference]: Without dead ends: 170 [2022-11-22 02:39:53,003 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 02:39:53,010 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 782 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:53,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 224 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:39:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-22 02:39:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-22 02:39:53,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 163 states have (on average 1.2269938650306749) internal successors, (200), 169 states have internal predecessors, (200), 0 states have call successors, (0), 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 02:39:53,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 200 transitions. [2022-11-22 02:39:53,084 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 200 transitions. Word has length 46 [2022-11-22 02:39:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:53,085 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 200 transitions. [2022-11-22 02:39:53,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 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 02:39:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 200 transitions. [2022-11-22 02:39:53,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-22 02:39:53,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:53,095 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] [2022-11-22 02:39:53,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:39:53,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:39:53,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:53,097 INFO L85 PathProgramCache]: Analyzing trace with hash 461144478, now seen corresponding path program 1 times [2022-11-22 02:39:53,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:53,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502621027] [2022-11-22 02:39:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:53,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:53,412 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 02:39:53,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:53,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502621027] [2022-11-22 02:39:53,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502621027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:53,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:53,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:39:53,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304397841] [2022-11-22 02:39:53,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:53,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:39:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:53,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:39:53,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:39:53,416 INFO L87 Difference]: Start difference. First operand 170 states and 200 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 02:39:53,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:53,583 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2022-11-22 02:39:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:39:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-11-22 02:39:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:53,587 INFO L225 Difference]: With dead ends: 280 [2022-11-22 02:39:53,587 INFO L226 Difference]: Without dead ends: 151 [2022-11-22 02:39:53,587 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 02:39:53,589 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 506 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:53,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 110 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:39:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-22 02:39:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-11-22 02:39:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 144 states have (on average 1.2361111111111112) internal successors, (178), 150 states have internal predecessors, (178), 0 states have call successors, (0), 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 02:39:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 178 transitions. [2022-11-22 02:39:53,605 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 178 transitions. Word has length 47 [2022-11-22 02:39:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:53,606 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 178 transitions. [2022-11-22 02:39:53,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 02:39:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 178 transitions. [2022-11-22 02:39:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-22 02:39:53,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:53,608 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] [2022-11-22 02:39:53,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:39:53,608 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:39:53,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash -833712089, now seen corresponding path program 1 times [2022-11-22 02:39:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:53,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526387797] [2022-11-22 02:39:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:53,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:53,816 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 02:39:53,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:53,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526387797] [2022-11-22 02:39:53,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526387797] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:53,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:53,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:39:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655526331] [2022-11-22 02:39:53,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:53,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:39:53,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:53,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:39:53,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:39:53,825 INFO L87 Difference]: Start difference. First operand 151 states and 178 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:39:53,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:53,961 INFO L93 Difference]: Finished difference Result 261 states and 314 transitions. [2022-11-22 02:39:53,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:39:53,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2022-11-22 02:39:53,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:53,963 INFO L225 Difference]: With dead ends: 261 [2022-11-22 02:39:53,963 INFO L226 Difference]: Without dead ends: 143 [2022-11-22 02:39:53,964 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 02:39:53,965 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 464 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:53,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 109 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:39:53,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-22 02:39:53,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-11-22 02:39:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 136 states have (on average 1.2352941176470589) internal successors, (168), 142 states have internal predecessors, (168), 0 states have call successors, (0), 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 02:39:53,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2022-11-22 02:39:53,985 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 48 [2022-11-22 02:39:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:53,986 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2022-11-22 02:39:53,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 02:39:53,987 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2022-11-22 02:39:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 02:39:53,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:53,993 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] [2022-11-22 02:39:53,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:39:53,993 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:39:53,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:53,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1739674480, now seen corresponding path program 1 times [2022-11-22 02:39:53,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:53,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902546212] [2022-11-22 02:39:53,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:53,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:54,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:54,375 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 02:39:54,376 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:54,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902546212] [2022-11-22 02:39:54,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902546212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:54,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:54,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:39:54,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520896627] [2022-11-22 02:39:54,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:39:54,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:54,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:39:54,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:39:54,379 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 02:39:54,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:54,928 INFO L93 Difference]: Finished difference Result 279 states and 334 transitions. [2022-11-22 02:39:54,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:39:54,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-11-22 02:39:54,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:54,930 INFO L225 Difference]: With dead ends: 279 [2022-11-22 02:39:54,930 INFO L226 Difference]: Without dead ends: 274 [2022-11-22 02:39:54,931 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 02:39:54,932 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 713 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:54,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 544 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:39:54,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-22 02:39:54,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 143. [2022-11-22 02:39:54,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 136 states have (on average 1.2279411764705883) internal successors, (167), 142 states have internal predecessors, (167), 0 states have call successors, (0), 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 02:39:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2022-11-22 02:39:54,954 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 49 [2022-11-22 02:39:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:54,954 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2022-11-22 02:39:54,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 02:39:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2022-11-22 02:39:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 02:39:54,957 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:54,957 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] [2022-11-22 02:39:54,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:39:54,958 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:39:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:54,959 INFO L85 PathProgramCache]: Analyzing trace with hash -643095714, now seen corresponding path program 1 times [2022-11-22 02:39:54,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:54,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027837175] [2022-11-22 02:39:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:55,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:55,316 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 02:39:55,316 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:55,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027837175] [2022-11-22 02:39:55,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027837175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:55,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:55,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:39:55,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749707659] [2022-11-22 02:39:55,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:55,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:39:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:55,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:39:55,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:39:55,325 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 02:39:55,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:55,859 INFO L93 Difference]: Finished difference Result 325 states and 393 transitions. [2022-11-22 02:39:55,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:39:55,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-11-22 02:39:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:55,862 INFO L225 Difference]: With dead ends: 325 [2022-11-22 02:39:55,862 INFO L226 Difference]: Without dead ends: 278 [2022-11-22 02:39:55,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:39:55,871 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 610 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:55,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 712 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:39:55,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-22 02:39:55,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 143. [2022-11-22 02:39:55,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 136 states have (on average 1.2205882352941178) internal successors, (166), 142 states have internal predecessors, (166), 0 states have call successors, (0), 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 02:39:55,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 166 transitions. [2022-11-22 02:39:55,902 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 166 transitions. Word has length 49 [2022-11-22 02:39:55,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:55,903 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 166 transitions. [2022-11-22 02:39:55,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 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 02:39:55,903 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 166 transitions. [2022-11-22 02:39:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-22 02:39:55,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:55,904 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] [2022-11-22 02:39:55,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:39:55,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:39:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:55,905 INFO L85 PathProgramCache]: Analyzing trace with hash 630687196, now seen corresponding path program 1 times [2022-11-22 02:39:55,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:55,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878475182] [2022-11-22 02:39:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:55,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:56,168 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 02:39:56,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:56,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878475182] [2022-11-22 02:39:56,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878475182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:56,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:56,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:39:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157228172] [2022-11-22 02:39:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:56,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:39:56,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:39:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:39:56,170 INFO L87 Difference]: Start difference. First operand 143 states and 166 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 02:39:56,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:56,475 INFO L93 Difference]: Finished difference Result 272 states and 316 transitions. [2022-11-22 02:39:56,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:39:56,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-11-22 02:39:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:56,479 INFO L225 Difference]: With dead ends: 272 [2022-11-22 02:39:56,479 INFO L226 Difference]: Without dead ends: 202 [2022-11-22 02:39:56,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:39:56,486 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 624 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:56,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 356 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:39:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-22 02:39:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 143. [2022-11-22 02:39:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 136 states have (on average 1.213235294117647) internal successors, (165), 142 states have internal predecessors, (165), 0 states have call successors, (0), 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 02:39:56,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2022-11-22 02:39:56,520 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 49 [2022-11-22 02:39:56,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:56,521 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2022-11-22 02:39:56,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 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 02:39:56,521 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2022-11-22 02:39:56,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 02:39:56,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:56,523 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 02:39:56,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:39:56,524 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:39:56,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:56,524 INFO L85 PathProgramCache]: Analyzing trace with hash -773609523, now seen corresponding path program 1 times [2022-11-22 02:39:56,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:56,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777290470] [2022-11-22 02:39:56,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:56,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:57,187 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 02:39:57,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:57,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777290470] [2022-11-22 02:39:57,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777290470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:57,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:57,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 02:39:57,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899053541] [2022-11-22 02:39:57,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:57,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:39:57,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:57,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:39:57,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:39:57,191 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 02:39:58,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:39:58,095 INFO L93 Difference]: Finished difference Result 394 states and 474 transitions. [2022-11-22 02:39:58,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 02:39:58,096 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 02:39:58,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:39:58,097 INFO L225 Difference]: With dead ends: 394 [2022-11-22 02:39:58,097 INFO L226 Difference]: Without dead ends: 331 [2022-11-22 02:39:58,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:39:58,101 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 829 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:39:58,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1075 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:39:58,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-22 02:39:58,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 110. [2022-11-22 02:39:58,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 109 states have internal predecessors, (126), 0 states have call successors, (0), 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 02:39:58,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 126 transitions. [2022-11-22 02:39:58,132 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 126 transitions. Word has length 51 [2022-11-22 02:39:58,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:39:58,133 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 126 transitions. [2022-11-22 02:39:58,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 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 02:39:58,133 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 126 transitions. [2022-11-22 02:39:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 02:39:58,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:39:58,134 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 02:39:58,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:39:58,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:39:58,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:39:58,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1216664806, now seen corresponding path program 1 times [2022-11-22 02:39:58,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:39:58,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099595390] [2022-11-22 02:39:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:39:58,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:39:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:39:58,826 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 02:39:58,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:39:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099595390] [2022-11-22 02:39:58,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099595390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:39:58,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:39:58,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:39:58,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285748329] [2022-11-22 02:39:58,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:39:58,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:39:58,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:39:58,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:39:58,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:39:58,828 INFO L87 Difference]: Start difference. First operand 110 states and 126 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 02:40:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:00,252 INFO L93 Difference]: Finished difference Result 419 states and 511 transitions. [2022-11-22 02:40:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:40:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 02:40:00,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:00,254 INFO L225 Difference]: With dead ends: 419 [2022-11-22 02:40:00,254 INFO L226 Difference]: Without dead ends: 403 [2022-11-22 02:40:00,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:40:00,256 INFO L413 NwaCegarLoop]: 320 mSDtfsCounter, 842 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:00,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 2086 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:40:00,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-11-22 02:40:00,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 94. [2022-11-22 02:40:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 92 states have (on average 1.173913043478261) internal successors, (108), 93 states have internal predecessors, (108), 0 states have call successors, (0), 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 02:40:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 108 transitions. [2022-11-22 02:40:00,293 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 108 transitions. Word has length 51 [2022-11-22 02:40:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:00,294 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 108 transitions. [2022-11-22 02:40:00,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 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 02:40:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 108 transitions. [2022-11-22 02:40:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-22 02:40:00,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:00,295 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 02:40:00,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:40:00,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:00,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:00,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1642323263, now seen corresponding path program 1 times [2022-11-22 02:40:00,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:00,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227632447] [2022-11-22 02:40:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:00,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:00,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:00,673 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 02:40:00,674 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:00,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227632447] [2022-11-22 02:40:00,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227632447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:00,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:00,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:40:00,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890948721] [2022-11-22 02:40:00,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:00,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:40:00,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:00,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:40:00,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:40:00,676 INFO L87 Difference]: Start difference. First operand 94 states and 108 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 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 02:40:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:01,352 INFO L93 Difference]: Finished difference Result 212 states and 254 transitions. [2022-11-22 02:40:01,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:40:01,353 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 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 02:40:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:01,354 INFO L225 Difference]: With dead ends: 212 [2022-11-22 02:40:01,354 INFO L226 Difference]: Without dead ends: 164 [2022-11-22 02:40:01,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:40:01,355 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 499 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:01,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 403 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:40:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-11-22 02:40:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 94. [2022-11-22 02:40:01,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 93 states have internal predecessors, (107), 0 states have call successors, (0), 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 02:40:01,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2022-11-22 02:40:01,392 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 52 [2022-11-22 02:40:01,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:01,393 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2022-11-22 02:40:01,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 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 02:40:01,393 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2022-11-22 02:40:01,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-22 02:40:01,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:01,394 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 02:40:01,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:40:01,394 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:01,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:01,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1207922866, now seen corresponding path program 1 times [2022-11-22 02:40:01,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:01,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231526742] [2022-11-22 02:40:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:01,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:02,236 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 02:40:02,236 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:02,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231526742] [2022-11-22 02:40:02,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231526742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:02,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:02,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-22 02:40:02,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272334430] [2022-11-22 02:40:02,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:02,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 02:40:02,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:02,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 02:40:02,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-11-22 02:40:02,238 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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 02:40:04,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:04,048 INFO L93 Difference]: Finished difference Result 387 states and 470 transitions. [2022-11-22 02:40:04,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 02:40:04,049 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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 02:40:04,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:04,050 INFO L225 Difference]: With dead ends: 387 [2022-11-22 02:40:04,051 INFO L226 Difference]: Without dead ends: 381 [2022-11-22 02:40:04,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2022-11-22 02:40:04,052 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 656 mSDsluCounter, 2471 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:04,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 2704 Invalid, 1082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1082 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:40:04,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-22 02:40:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 105. [2022-11-22 02:40:04,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:40:04,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2022-11-22 02:40:04,102 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 54 [2022-11-22 02:40:04,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:04,103 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2022-11-22 02:40:04,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0) internal successors, (54), 17 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 02:40:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2022-11-22 02:40:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-22 02:40:04,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:04,104 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 02:40:04,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:40:04,104 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:04,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:04,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1871811698, now seen corresponding path program 1 times [2022-11-22 02:40:04,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:04,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708789274] [2022-11-22 02:40:04,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:04,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:04,755 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 02:40:04,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:04,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708789274] [2022-11-22 02:40:04,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708789274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:04,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:04,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:40:04,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206683575] [2022-11-22 02:40:04,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:04,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:40:04,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:04,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:40:04,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:40:04,757 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 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 02:40:06,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:06,263 INFO L93 Difference]: Finished difference Result 354 states and 436 transitions. [2022-11-22 02:40:06,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:40:06,264 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 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 02:40:06,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:06,266 INFO L225 Difference]: With dead ends: 354 [2022-11-22 02:40:06,266 INFO L226 Difference]: Without dead ends: 348 [2022-11-22 02:40:06,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:40:06,267 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 751 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:06,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1391 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:06,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-11-22 02:40:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 88. [2022-11-22 02:40:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.160919540229885) internal successors, (101), 87 states have internal predecessors, (101), 0 states have call successors, (0), 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 02:40:06,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2022-11-22 02:40:06,319 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 55 [2022-11-22 02:40:06,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:06,319 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2022-11-22 02:40:06,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 12 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 02:40:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2022-11-22 02:40:06,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-22 02:40:06,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:06,320 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:06,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:40:06,321 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:06,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:06,321 INFO L85 PathProgramCache]: Analyzing trace with hash -205702261, now seen corresponding path program 1 times [2022-11-22 02:40:06,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:06,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137696915] [2022-11-22 02:40:06,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:06,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:06,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:06,430 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 02:40:06,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:06,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137696915] [2022-11-22 02:40:06,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137696915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:06,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:06,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:06,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507846694] [2022-11-22 02:40:06,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:06,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:06,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:06,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:06,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:06,433 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:06,569 INFO L93 Difference]: Finished difference Result 148 states and 179 transitions. [2022-11-22 02:40:06,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:06,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-22 02:40:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:06,571 INFO L225 Difference]: With dead ends: 148 [2022-11-22 02:40:06,571 INFO L226 Difference]: Without dead ends: 118 [2022-11-22 02:40:06,572 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 02:40:06,572 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 42 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:06,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 190 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:40:06,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-22 02:40:06,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 112. [2022-11-22 02:40:06,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.1981981981981982) internal successors, (133), 111 states have internal predecessors, (133), 0 states have call successors, (0), 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 02:40:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 133 transitions. [2022-11-22 02:40:06,691 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 133 transitions. Word has length 66 [2022-11-22 02:40:06,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:06,692 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 133 transitions. [2022-11-22 02:40:06,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,692 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 133 transitions. [2022-11-22 02:40:06,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-22 02:40:06,693 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:06,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:06,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:40:06,694 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:06,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:06,694 INFO L85 PathProgramCache]: Analyzing trace with hash 338549682, now seen corresponding path program 1 times [2022-11-22 02:40:06,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:06,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757504346] [2022-11-22 02:40:06,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:06,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:06,806 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 02:40:06,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:06,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757504346] [2022-11-22 02:40:06,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757504346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:06,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:06,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754473256] [2022-11-22 02:40:06,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:06,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:06,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:06,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:06,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:06,809 INFO L87 Difference]: Start difference. First operand 112 states and 133 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:06,985 INFO L93 Difference]: Finished difference Result 220 states and 275 transitions. [2022-11-22 02:40:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-11-22 02:40:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:06,987 INFO L225 Difference]: With dead ends: 220 [2022-11-22 02:40:06,987 INFO L226 Difference]: Without dead ends: 166 [2022-11-22 02:40:06,988 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 02:40:06,988 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 35 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:06,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 190 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:40:06,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-22 02:40:07,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 156. [2022-11-22 02:40:07,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.232258064516129) internal successors, (191), 155 states have internal predecessors, (191), 0 states have call successors, (0), 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 02:40:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2022-11-22 02:40:07,136 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 69 [2022-11-22 02:40:07,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:07,136 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2022-11-22 02:40:07,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2022-11-22 02:40:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-22 02:40:07,137 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:07,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:07,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:40:07,138 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:07,138 INFO L85 PathProgramCache]: Analyzing trace with hash 431938851, now seen corresponding path program 1 times [2022-11-22 02:40:07,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:07,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587613978] [2022-11-22 02:40:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:07,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:07,249 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 02:40:07,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:07,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587613978] [2022-11-22 02:40:07,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587613978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:07,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:07,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:07,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349780719] [2022-11-22 02:40:07,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:07,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:07,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:07,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:07,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:07,252 INFO L87 Difference]: Start difference. First operand 156 states and 191 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:07,559 INFO L93 Difference]: Finished difference Result 352 states and 449 transitions. [2022-11-22 02:40:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:07,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-11-22 02:40:07,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:07,568 INFO L225 Difference]: With dead ends: 352 [2022-11-22 02:40:07,568 INFO L226 Difference]: Without dead ends: 254 [2022-11-22 02:40:07,568 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 02:40:07,569 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 25 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:07,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 190 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:40:07,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-11-22 02:40:07,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 236. [2022-11-22 02:40:07,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.2553191489361701) internal successors, (295), 235 states have internal predecessors, (295), 0 states have call successors, (0), 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 02:40:07,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 295 transitions. [2022-11-22 02:40:07,816 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 295 transitions. Word has length 72 [2022-11-22 02:40:07,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:07,816 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 295 transitions. [2022-11-22 02:40:07,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:07,817 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 295 transitions. [2022-11-22 02:40:07,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-22 02:40:07,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:07,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:07,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:40:07,819 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:07,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:07,819 INFO L85 PathProgramCache]: Analyzing trace with hash -928058765, now seen corresponding path program 1 times [2022-11-22 02:40:07,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:07,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181625291] [2022-11-22 02:40:07,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:07,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:07,916 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 02:40:07,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:07,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181625291] [2022-11-22 02:40:07,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181625291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:07,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:07,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:40:07,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194867124] [2022-11-22 02:40:07,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:07,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:40:07,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:07,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:40:07,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:40:07,919 INFO L87 Difference]: Start difference. First operand 236 states and 295 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:08,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:08,741 INFO L93 Difference]: Finished difference Result 813 states and 1034 transitions. [2022-11-22 02:40:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:40:08,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-22 02:40:08,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:08,745 INFO L225 Difference]: With dead ends: 813 [2022-11-22 02:40:08,745 INFO L226 Difference]: Without dead ends: 635 [2022-11-22 02:40:08,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:40:08,747 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 298 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:08,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 383 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:40:08,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2022-11-22 02:40:09,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 344. [2022-11-22 02:40:09,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.2448979591836735) internal successors, (427), 343 states have internal predecessors, (427), 0 states have call successors, (0), 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 02:40:09,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 427 transitions. [2022-11-22 02:40:09,042 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 427 transitions. Word has length 75 [2022-11-22 02:40:09,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:09,042 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 427 transitions. [2022-11-22 02:40:09,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:09,042 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 427 transitions. [2022-11-22 02:40:09,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 02:40:09,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:09,043 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 02:40:09,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:40:09,044 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:09,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:09,044 INFO L85 PathProgramCache]: Analyzing trace with hash 197041588, now seen corresponding path program 1 times [2022-11-22 02:40:09,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:09,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223215631] [2022-11-22 02:40:09,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:09,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:09,112 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 02:40:09,112 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:09,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223215631] [2022-11-22 02:40:09,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223215631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:09,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:09,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:09,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378500643] [2022-11-22 02:40:09,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:09,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:09,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:09,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:09,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:09,117 INFO L87 Difference]: Start difference. First operand 344 states and 427 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 02:40:09,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:09,518 INFO L93 Difference]: Finished difference Result 632 states and 793 transitions. [2022-11-22 02:40:09,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:09,519 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 02:40:09,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:09,520 INFO L225 Difference]: With dead ends: 632 [2022-11-22 02:40:09,521 INFO L226 Difference]: Without dead ends: 346 [2022-11-22 02:40:09,521 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 02:40:09,522 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 24 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:09,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 148 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:40:09,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-11-22 02:40:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 344. [2022-11-22 02:40:09,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.2419825072886297) internal successors, (426), 343 states have internal predecessors, (426), 0 states have call successors, (0), 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 02:40:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 426 transitions. [2022-11-22 02:40:09,896 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 426 transitions. Word has length 77 [2022-11-22 02:40:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:09,896 INFO L495 AbstractCegarLoop]: Abstraction has 344 states and 426 transitions. [2022-11-22 02:40:09,896 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 02:40:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 426 transitions. [2022-11-22 02:40:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 02:40:09,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:09,897 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 02:40:09,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:40:09,897 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:09,898 INFO L85 PathProgramCache]: Analyzing trace with hash 31731329, now seen corresponding path program 1 times [2022-11-22 02:40:09,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:09,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495866085] [2022-11-22 02:40:09,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:09,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:09,957 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 02:40:09,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:09,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495866085] [2022-11-22 02:40:09,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495866085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:09,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:09,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:09,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133139869] [2022-11-22 02:40:09,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:09,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:09,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:09,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:09,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:09,960 INFO L87 Difference]: Start difference. First operand 344 states and 426 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 02:40:10,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:10,549 INFO L93 Difference]: Finished difference Result 748 states and 939 transitions. [2022-11-22 02:40:10,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:10,550 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 02:40:10,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:10,552 INFO L225 Difference]: With dead ends: 748 [2022-11-22 02:40:10,552 INFO L226 Difference]: Without dead ends: 462 [2022-11-22 02:40:10,552 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 02:40:10,553 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 52 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:10,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 145 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:40:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-11-22 02:40:10,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 460. [2022-11-22 02:40:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.2396514161220045) internal successors, (569), 459 states have internal predecessors, (569), 0 states have call successors, (0), 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 02:40:10,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 569 transitions. [2022-11-22 02:40:10,949 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 569 transitions. Word has length 77 [2022-11-22 02:40:10,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:10,950 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 569 transitions. [2022-11-22 02:40:10,950 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 02:40:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 569 transitions. [2022-11-22 02:40:10,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-22 02:40:10,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:10,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:10,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:40:10,951 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:10,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1936830237, now seen corresponding path program 1 times [2022-11-22 02:40:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:10,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476280187] [2022-11-22 02:40:10,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:10,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:10,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:11,235 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 02:40:11,235 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:11,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476280187] [2022-11-22 02:40:11,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476280187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:11,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:11,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:40:11,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943008671] [2022-11-22 02:40:11,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:11,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:40:11,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:11,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:40:11,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:40:11,238 INFO L87 Difference]: Start difference. First operand 460 states and 569 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 02:40:12,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:12,215 INFO L93 Difference]: Finished difference Result 607 states and 745 transitions. [2022-11-22 02:40:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:40:12,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-11-22 02:40:12,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:12,218 INFO L225 Difference]: With dead ends: 607 [2022-11-22 02:40:12,218 INFO L226 Difference]: Without dead ends: 605 [2022-11-22 02:40:12,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:40:12,219 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 216 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:12,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 591 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:40:12,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-22 02:40:12,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 460. [2022-11-22 02:40:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.2222222222222223) internal successors, (561), 459 states have internal predecessors, (561), 0 states have call successors, (0), 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 02:40:12,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 561 transitions. [2022-11-22 02:40:12,719 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 561 transitions. Word has length 78 [2022-11-22 02:40:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:12,719 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 561 transitions. [2022-11-22 02:40:12,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 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 02:40:12,720 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 561 transitions. [2022-11-22 02:40:12,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 02:40:12,721 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:12,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:12,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:40:12,721 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:12,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:12,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1543272581, now seen corresponding path program 1 times [2022-11-22 02:40:12,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:12,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690204190] [2022-11-22 02:40:12,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:12,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:12,965 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:40:12,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:12,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690204190] [2022-11-22 02:40:12,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690204190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:12,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:12,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:40:12,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953565817] [2022-11-22 02:40:12,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:12,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:40:12,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:40:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:40:12,967 INFO L87 Difference]: Start difference. First operand 460 states and 561 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 02:40:14,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:14,259 INFO L93 Difference]: Finished difference Result 1130 states and 1388 transitions. [2022-11-22 02:40:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:40:14,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 91 [2022-11-22 02:40:14,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:14,263 INFO L225 Difference]: With dead ends: 1130 [2022-11-22 02:40:14,263 INFO L226 Difference]: Without dead ends: 722 [2022-11-22 02:40:14,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:40:14,264 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 347 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:14,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 275 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:40:14,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-22 02:40:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 460. [2022-11-22 02:40:14,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.2200435729847494) internal successors, (560), 459 states have internal predecessors, (560), 0 states have call successors, (0), 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 02:40:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 560 transitions. [2022-11-22 02:40:14,747 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 560 transitions. Word has length 91 [2022-11-22 02:40:14,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:14,748 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 560 transitions. [2022-11-22 02:40:14,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 02:40:14,748 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 560 transitions. [2022-11-22 02:40:14,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:40:14,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:14,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:14,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:40:14,750 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:14,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:14,751 INFO L85 PathProgramCache]: Analyzing trace with hash -329093602, now seen corresponding path program 1 times [2022-11-22 02:40:14,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:14,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043500473] [2022-11-22 02:40:14,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:14,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:16,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:16,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043500473] [2022-11-22 02:40:16,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043500473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:40:16,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614225461] [2022-11-22 02:40:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:16,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:16,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:16,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:40:16,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:40:17,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:17,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-22 02:40:17,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:20,168 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-22 02:40:20,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:40:20,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614225461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:20,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:40:20,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [24] total 39 [2022-11-22 02:40:20,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250391689] [2022-11-22 02:40:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:20,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-22 02:40:20,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:20,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-22 02:40:20,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1350, Unknown=0, NotChecked=0, Total=1482 [2022-11-22 02:40:20,171 INFO L87 Difference]: Start difference. First operand 460 states and 560 transitions. Second operand has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 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 02:40:23,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:23,387 INFO L93 Difference]: Finished difference Result 1648 states and 2021 transitions. [2022-11-22 02:40:23,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 02:40:23,388 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 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 93 [2022-11-22 02:40:23,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:23,390 INFO L225 Difference]: With dead ends: 1648 [2022-11-22 02:40:23,391 INFO L226 Difference]: Without dead ends: 1239 [2022-11-22 02:40:23,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=197, Invalid=1965, Unknown=0, NotChecked=0, Total=2162 [2022-11-22 02:40:23,392 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 432 mSDsluCounter, 1833 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:23,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 2027 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:40:23,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2022-11-22 02:40:23,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 470. [2022-11-22 02:40:23,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 1.2174840085287846) internal successors, (571), 469 states have internal predecessors, (571), 0 states have call successors, (0), 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 02:40:23,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 571 transitions. [2022-11-22 02:40:23,843 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 571 transitions. Word has length 93 [2022-11-22 02:40:23,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:23,843 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 571 transitions. [2022-11-22 02:40:23,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.777777777777778) internal successors, (86), 18 states have internal predecessors, (86), 0 states have call successors, (0), 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 02:40:23,844 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 571 transitions. [2022-11-22 02:40:23,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 02:40:23,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:23,845 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:23,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:40:24,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-22 02:40:24,052 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-11-22 02:40:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1292660130, now seen corresponding path program 1 times [2022-11-22 02:40:24,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:24,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903003580] [2022-11-22 02:40:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:24,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:24,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:26,058 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:26,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903003580] [2022-11-22 02:40:26,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903003580] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:40:26,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842867549] [2022-11-22 02:40:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:26,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:26,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:26,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:40:26,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a339661e-0f7a-49e6-8b12-14333627c7b0/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:40:26,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:26,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-22 02:40:26,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:31,814 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:31,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:41:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:41:23,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842867549] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:41:23,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [381248167] [2022-11-22 02:41:23,105 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-22 02:41:23,105 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:41:23,114 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:41:23,122 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:41:23,122 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:41:23,337 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:41:23,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-22 02:41:23,346 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 02:41:23,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:41:23,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:41:23,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 02:41:23,374 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 02:41:38,282 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:43:00,965 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22724#(and (<= ~__return_1546~0 1) (<= 0 ~id3~0) (= |ULTIMATE.start_main_~main__c1~0#1| ~__return_1616~0) (<= 0 (+ ~p3_new~0 1)) (<= 0 ~mode1~0) (<= |ULTIMATE.start_main_~assert__arg~0#1| 1) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~1#1|) (<= 1 ~__return_1546~0) (<= ~__return_2236~0 1) (= (ite (= |ULTIMATE.start_main_~main__c1~0#1| 0) 0 1) |ULTIMATE.start_main_~__tmp_3~0#1|) (<= 0 ~id1~0) (<= ~__return_1406~0 1) (<= 0 (+ |ULTIMATE.start_main_~node3__m3~0#1| 1)) (<= (+ ~p1_new~0 1) 0) (<= 0 ~__return_2167~0) (<= |ULTIMATE.start_main_~node2____CPAchecker_TMP_0~0#1| 127) (<= |ULTIMATE.start_main_~check__tmp~1#1| 1) (<= 0 ~mode3~0) (<= ~__tmp_1489_0~0 0) (<= |ULTIMATE.start_main_~assert__arg~1#1| 1) (= |ULTIMATE.start_main_~check__tmp~0#1| 1) (<= 1 |ULTIMATE.start_main_~check__tmp~1#1|) (<= 0 |ULTIMATE.start_main_~node2__m2~1#1|) (= ~__return_1988~0 0) (<= 0 |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~0#1|) (<= |#NULL.offset| 0) (= (mod |ULTIMATE.start_main_~assert__arg~2#1| 256) 0) (<= ~mode2~0 1) (<= 0 ~st1~0) (<= 0 ~st2~0) (<= |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1| 0) (<= ~p1~0 0) (<= ~__return_main~0 0) (= ~__return_2203~0 0) (<= ~mode3~0 1) (<= 0 ~p2~0) (<= 1 ~__return_1406~0) (<= ~__return_2072~0 0) (<= 0 ~send2~0) (<= 0 (+ |ULTIMATE.start_main_~node1__m1~0#1| 1)) (<= ~id1~0 127) (<= 0 ~__return_1479~0) (<= |ULTIMATE.start_main_~node3____CPAchecker_TMP_0~0#1| 127) (<= 0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~0#1|) (= ~__return_1817~0 0) (<= 0 ~__tmp_1623_0~0) (<= ~st1~0 1) (<= |ULTIMATE.start_main_~__tmp_1~0#1| 1) (= ~__return_1925~0 0) (= ~__return_2120~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_1~0#1|) (<= 0 ~__return_2039~0) (<= 0 (+ ~p2_new~0 1)) (<= 0 ~__tmp_1489_0~0) (<= (+ |ULTIMATE.start_main_~node1__m1~0#1| 1) 0) (<= ~__return_2167~0 0) (<= 2 |ULTIMATE.start_main_~main__i2~0#1|) (<= (+ ~nomsg~0 1) 0) (<= ~mode1~0 1) (= ~__return_1889~0 0) (<= (+ ~p2_new~0 1) 0) (<= 0 ~__return_1770~0) (<= |ULTIMATE.start_main_~node1__m1~1#1| 127) (<= 0 |ULTIMATE.start_main_~node2____CPAchecker_TMP_0~0#1|) (<= ~__return_1479~0 0) (<= 0 |ULTIMATE.start_main_~assert__arg~1#1|) (<= 0 ~__return_main~0) (<= ~__return_1770~0 0) (<= ~id3~0 127) (<= 0 |ULTIMATE.start_main_~node3__m3~1#1|) (<= 1 ~__tmp_1555_0~0) (<= 0 ~id2~0) (= ~__return_1559~0 0) (<= 0 (+ ~nomsg~0 1)) (= ~__tmp_1617_0~0 |ULTIMATE.start_main_~main____CPAchecker_TMP_0~1#1|) (<= |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1| 127) (<= 1 ~__tmp_1617_0~0) (<= ~p2~0 0) (<= 0 ~mode2~0) (= ~__return_2272~0 0) (<= |ULTIMATE.start_main_~__tmp_2~0#1| 1) (<= ~id2~0 127) (<= 0 ~st3~0) (= |ULTIMATE.start_main_~assert__arg~2#1| |ULTIMATE.start_main_~__tmp_3~0#1|) (<= ~__return_1707~0 0) (<= (+ ~p3_new~0 1) 0) (<= |ULTIMATE.start_main_~init__tmp~0#1| 1) (<= 0 |#NULL.offset|) (<= 0 (+ |ULTIMATE.start_main_~node2__m2~0#1| 1)) (= ~p3~0 0) (<= 0 (+ ~p1_new~0 1)) (<= 0 ~send3~0) (<= 1 ~__return_2236~0) (<= 0 |ULTIMATE.start_main_~node1____CPAchecker_TMP_0~0#1|) (<= 0 ~p1~0) (<= 0 ~__return_1707~0) (= |ULTIMATE.start_main_~check__tmp~2#1| ~__return_1616~0) (<= 0 |#StackHeapBarrier|) (<= 0 ~send1~0) (<= (+ |ULTIMATE.start_main_~node2__m2~0#1| 1) 0) (= ~__return_1856~0 0) (<= (+ |ULTIMATE.start_main_~node3__m3~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~assert__arg~0#1|) (<= 1 |ULTIMATE.start_main_~init__tmp~0#1|) (<= 0 ~__return_2072~0) (= |#NULL.base| 0) (<= ~__return_2039~0 0) (<= 0 |ULTIMATE.start_main_~__tmp_2~0#1|))' at error location [2022-11-22 02:43:00,965 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-22 02:43:00,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:43:00,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 22] total 66 [2022-11-22 02:43:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510398228] [2022-11-22 02:43:00,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:43:00,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-11-22 02:43:00,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:43:00,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-11-22 02:43:00,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2376, Invalid=13374, Unknown=0, NotChecked=0, Total=15750 [2022-11-22 02:43:00,971 INFO L87 Difference]: Start difference. First operand 470 states and 571 transitions. Second operand has 67 states, 67 states have (on average 4.059701492537314) internal successors, (272), 66 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)