./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh --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 297d4f7e6fe1324d357f4812a6556f1cd58caa692e4601779e6f52e2ab17fbf7 --- 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-2329fc7 [2022-12-14 13:59:53,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 13:59:53,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 13:59:53,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 13:59:53,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 13:59:53,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 13:59:53,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 13:59:53,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 13:59:53,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 13:59:53,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 13:59:53,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 13:59:53,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 13:59:53,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 13:59:53,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 13:59:53,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 13:59:53,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 13:59:53,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 13:59:53,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 13:59:53,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 13:59:53,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 13:59:53,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 13:59:53,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 13:59:53,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 13:59:53,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 13:59:53,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 13:59:53,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 13:59:53,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 13:59:53,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 13:59:53,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 13:59:53,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 13:59:53,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 13:59:53,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 13:59:53,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 13:59:53,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 13:59:53,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 13:59:53,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 13:59:53,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 13:59:53,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 13:59:53,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 13:59:53,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 13:59:53,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 13:59:53,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 13:59:53,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 13:59:53,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 13:59:53,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 13:59:53,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 13:59:53,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 13:59:53,999 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 13:59:53,999 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 13:59:53,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 13:59:53,999 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 13:59:53,999 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 13:59:54,000 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 13:59:54,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 13:59:54,000 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 13:59:54,000 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 13:59:54,000 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 13:59:54,000 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 13:59:54,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 13:59:54,001 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 13:59:54,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 13:59:54,001 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 13:59:54,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 13:59:54,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 13:59:54,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 13:59:54,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 13:59:54,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 13:59:54,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 13:59:54,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 13:59:54,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 13:59:54,003 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 13:59:54,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 13:59:54,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 13:59:54,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 13:59:54,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:59:54,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 13:59:54,004 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 13:59:54,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 13:59:54,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 13:59:54,004 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 13:59:54,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 13:59:54,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 13:59:54,005 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 13:59:54,005 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_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 297d4f7e6fe1324d357f4812a6556f1cd58caa692e4601779e6f52e2ab17fbf7 [2022-12-14 13:59:54,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 13:59:54,193 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 13:59:54,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 13:59:54,196 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 13:59:54,197 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 13:59:54,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 13:59:56,781 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 13:59:56,968 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 13:59:56,968 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 13:59:56,978 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/data/67f1ea640/bcc1b060d5194c24ab7c4b19e4cd3f22/FLAG65a123d76 [2022-12-14 13:59:56,989 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/data/67f1ea640/bcc1b060d5194c24ab7c4b19e4cd3f22 [2022-12-14 13:59:56,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 13:59:56,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 13:59:56,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 13:59:56,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 13:59:56,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 13:59:56,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:59:56" (1/1) ... [2022-12-14 13:59:56,998 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23905b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:56, skipping insertion in model container [2022-12-14 13:59:56,998 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:59:56" (1/1) ... [2022-12-14 13:59:57,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 13:59:57,066 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 13:59:57,285 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16948,16961] [2022-12-14 13:59:57,314 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23372,23385] [2022-12-14 13:59:57,326 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26559,26572] [2022-12-14 13:59:57,337 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29535,29548] [2022-12-14 13:59:57,349 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33298,33311] [2022-12-14 13:59:57,358 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36350,36363] [2022-12-14 13:59:57,368 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39535,39548] [2022-12-14 13:59:57,377 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42506,42519] [2022-12-14 13:59:57,387 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45890,45903] [2022-12-14 13:59:57,396 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48876,48889] [2022-12-14 13:59:57,405 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[52025,52038] [2022-12-14 13:59:57,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:59:57,455 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 13:59:57,523 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16948,16961] [2022-12-14 13:59:57,543 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[23372,23385] [2022-12-14 13:59:57,554 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26559,26572] [2022-12-14 13:59:57,563 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[29535,29548] [2022-12-14 13:59:57,574 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33298,33311] [2022-12-14 13:59:57,581 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[36350,36363] [2022-12-14 13:59:57,588 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[39535,39548] [2022-12-14 13:59:57,595 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42506,42519] [2022-12-14 13:59:57,602 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[45890,45903] [2022-12-14 13:59:57,609 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[48876,48889] [2022-12-14 13:59:57,617 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_57a462f7-0999-4110-b478-38a22c3310a6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[52025,52038] [2022-12-14 13:59:57,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 13:59:57,645 INFO L208 MainTranslator]: Completed translation [2022-12-14 13:59:57,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57 WrapperNode [2022-12-14 13:59:57,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 13:59:57,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 13:59:57,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 13:59:57,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 13:59:57,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,714 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2580 [2022-12-14 13:59:57,714 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 13:59:57,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 13:59:57,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 13:59:57,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 13:59:57,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,763 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 13:59:57,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 13:59:57,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 13:59:57,775 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 13:59:57,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (1/1) ... [2022-12-14 13:59:57,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 13:59:57,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 13:59:57,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 13:59:57,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 13:59:57,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 13:59:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 13:59:57,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 13:59:57,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 13:59:57,977 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 13:59:57,978 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 13:59:58,989 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 13:59:59,081 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 13:59:59,081 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 13:59:59,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:59:59 BoogieIcfgContainer [2022-12-14 13:59:59,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 13:59:59,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 13:59:59,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 13:59:59,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 13:59:59,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:59:56" (1/3) ... [2022-12-14 13:59:59,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5482d7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:59:59, skipping insertion in model container [2022-12-14 13:59:59,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:59:57" (2/3) ... [2022-12-14 13:59:59,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5482d7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:59:59, skipping insertion in model container [2022-12-14 13:59:59,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:59:59" (3/3) ... [2022-12-14 13:59:59,093 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2022-12-14 13:59:59,112 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 13:59:59,112 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-14 13:59:59,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 13:59:59,178 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;@3d6f0a6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 13:59:59,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 13:59:59,185 INFO L276 IsEmpty]: Start isEmpty. Operand has 516 states, 504 states have (on average 1.8353174603174602) internal successors, (925), 515 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 13:59:59,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 13:59:59,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 13:59:59,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 13:59:59,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 13:59:59,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 13:59:59,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1216794109, now seen corresponding path program 1 times [2022-12-14 13:59:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 13:59:59,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46279445] [2022-12-14 13:59:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 13:59:59,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 13:59:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 13:59:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 13:59:59,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 13:59:59,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46279445] [2022-12-14 13:59:59,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46279445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 13:59:59,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 13:59:59,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 13:59:59,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315007472] [2022-12-14 13:59:59,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 13:59:59,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 13:59:59,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 13:59:59,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 13:59:59,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 13:59:59,602 INFO L87 Difference]: Start difference. First operand has 516 states, 504 states have (on average 1.8353174603174602) internal successors, (925), 515 states have internal predecessors, (925), 0 states have call successors, (0), 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 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:00,070 INFO L93 Difference]: Finished difference Result 697 states and 1215 transitions. [2022-12-14 14:00:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:00:00,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-14 14:00:00,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:00,084 INFO L225 Difference]: With dead ends: 697 [2022-12-14 14:00:00,084 INFO L226 Difference]: Without dead ends: 450 [2022-12-14 14:00:00,088 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 [2022-12-14 14:00:00,091 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 2229 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2229 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:00,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2229 Valid, 481 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:00:00,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-12-14 14:00:00,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2022-12-14 14:00:00,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 439 states have (on average 1.275626423690205) internal successors, (560), 449 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) [2022-12-14 14:00:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 560 transitions. [2022-12-14 14:00:00,153 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 560 transitions. Word has length 58 [2022-12-14 14:00:00,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:00,153 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 560 transitions. [2022-12-14 14:00:00,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:00,154 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 560 transitions. [2022-12-14 14:00:00,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 14:00:00,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:00,157 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:00,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 14:00:00,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:00,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:00,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1191017074, now seen corresponding path program 1 times [2022-12-14 14:00:00,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:00,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098398311] [2022-12-14 14:00:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:00,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:00,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:00,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:00,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098398311] [2022-12-14 14:00:00,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098398311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:00,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:00,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:00,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660432413] [2022-12-14 14:00:00,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:00,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:00:00,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:00,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:00:00,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:00:00,303 INFO L87 Difference]: Start difference. First operand 450 states and 560 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:00,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:00,520 INFO L93 Difference]: Finished difference Result 529 states and 648 transitions. [2022-12-14 14:00:00,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:00:00,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-14 14:00:00,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:00,522 INFO L225 Difference]: With dead ends: 529 [2022-12-14 14:00:00,522 INFO L226 Difference]: Without dead ends: 310 [2022-12-14 14:00:00,523 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 [2022-12-14 14:00:00,524 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1079 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:00,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1079 Valid, 212 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:00:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-12-14 14:00:00,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 310. [2022-12-14 14:00:00,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 299 states have (on average 1.2675585284280937) internal successors, (379), 309 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:00,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 379 transitions. [2022-12-14 14:00:00,538 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 379 transitions. Word has length 58 [2022-12-14 14:00:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:00,539 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 379 transitions. [2022-12-14 14:00:00,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 379 transitions. [2022-12-14 14:00:00,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 14:00:00,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:00,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:00,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 14:00:00,541 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:00,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:00,541 INFO L85 PathProgramCache]: Analyzing trace with hash 53020530, now seen corresponding path program 1 times [2022-12-14 14:00:00,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:00,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607354329] [2022-12-14 14:00:00,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:00,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:00,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:00,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607354329] [2022-12-14 14:00:00,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607354329] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:00,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:00,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:00,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591250425] [2022-12-14 14:00:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:00,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:00:00,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:00:00,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:00:00,617 INFO L87 Difference]: Start difference. First operand 310 states and 379 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:00,827 INFO L93 Difference]: Finished difference Result 552 states and 681 transitions. [2022-12-14 14:00:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:00:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-14 14:00:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:00,830 INFO L225 Difference]: With dead ends: 552 [2022-12-14 14:00:00,830 INFO L226 Difference]: Without dead ends: 390 [2022-12-14 14:00:00,830 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 [2022-12-14 14:00:00,831 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1198 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:00,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 277 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:00:00,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-12-14 14:00:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 346. [2022-12-14 14:00:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 335 states have (on average 1.319402985074627) internal successors, (442), 345 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 442 transitions. [2022-12-14 14:00:00,854 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 442 transitions. Word has length 58 [2022-12-14 14:00:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:00,855 INFO L495 AbstractCegarLoop]: Abstraction has 346 states and 442 transitions. [2022-12-14 14:00:00,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:00,855 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 442 transitions. [2022-12-14 14:00:00,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 14:00:00,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:00,856 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:00,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 14:00:00,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:00,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:00,857 INFO L85 PathProgramCache]: Analyzing trace with hash 84136005, now seen corresponding path program 1 times [2022-12-14 14:00:00,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:00,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174068866] [2022-12-14 14:00:00,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:00,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:00,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:00,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:00,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174068866] [2022-12-14 14:00:00,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174068866] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:00,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:00,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 14:00:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120595279] [2022-12-14 14:00:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:00,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 14:00:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 14:00:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 14:00:00,935 INFO L87 Difference]: Start difference. First operand 346 states and 442 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:01,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:01,077 INFO L93 Difference]: Finished difference Result 490 states and 622 transitions. [2022-12-14 14:00:01,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 14:00:01,078 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-14 14:00:01,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:01,079 INFO L225 Difference]: With dead ends: 490 [2022-12-14 14:00:01,080 INFO L226 Difference]: Without dead ends: 298 [2022-12-14 14:00:01,080 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 [2022-12-14 14:00:01,081 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 779 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:01,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 168 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:01,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-12-14 14:00:01,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2022-12-14 14:00:01,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.3205574912891986) internal successors, (379), 297 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:01,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 379 transitions. [2022-12-14 14:00:01,093 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 379 transitions. Word has length 59 [2022-12-14 14:00:01,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:01,093 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 379 transitions. [2022-12-14 14:00:01,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:01,093 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 379 transitions. [2022-12-14 14:00:01,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 14:00:01,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:01,094 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:01,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 14:00:01,094 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:01,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1322654244, now seen corresponding path program 1 times [2022-12-14 14:00:01,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:01,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322139089] [2022-12-14 14:00:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:01,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:01,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:01,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:01,320 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:01,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322139089] [2022-12-14 14:00:01,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322139089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:01,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:01,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:01,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552162252] [2022-12-14 14:00:01,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:01,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:01,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:01,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:01,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:01,323 INFO L87 Difference]: Start difference. First operand 298 states and 379 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:01,892 INFO L93 Difference]: Finished difference Result 691 states and 895 transitions. [2022-12-14 14:00:01,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:00:01,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 14:00:01,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:01,895 INFO L225 Difference]: With dead ends: 691 [2022-12-14 14:00:01,895 INFO L226 Difference]: Without dead ends: 611 [2022-12-14 14:00:01,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:00:01,896 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 1209 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 671 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:01,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 751 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 671 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:00:01,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-12-14 14:00:01,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 298. [2022-12-14 14:00:01,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.3170731707317074) internal successors, (378), 297 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:01,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 378 transitions. [2022-12-14 14:00:01,930 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 378 transitions. Word has length 60 [2022-12-14 14:00:01,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:01,931 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 378 transitions. [2022-12-14 14:00:01,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:01,931 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 378 transitions. [2022-12-14 14:00:01,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 14:00:01,932 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:01,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:01,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 14:00:01,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:01,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:01,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1579426260, now seen corresponding path program 1 times [2022-12-14 14:00:01,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:01,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81662549] [2022-12-14 14:00:01,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:01,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:02,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:02,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:02,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81662549] [2022-12-14 14:00:02,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81662549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:02,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:02,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:02,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194394335] [2022-12-14 14:00:02,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:02,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:02,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:02,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:02,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:02,098 INFO L87 Difference]: Start difference. First operand 298 states and 378 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:02,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:02,614 INFO L93 Difference]: Finished difference Result 591 states and 753 transitions. [2022-12-14 14:00:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:00:02,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 14:00:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:02,616 INFO L225 Difference]: With dead ends: 591 [2022-12-14 14:00:02,616 INFO L226 Difference]: Without dead ends: 489 [2022-12-14 14:00:02,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 14:00:02,618 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 845 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:02,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 746 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:00:02,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-12-14 14:00:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 298. [2022-12-14 14:00:02,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.3135888501742161) internal successors, (377), 297 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:02,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 377 transitions. [2022-12-14 14:00:02,652 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 377 transitions. Word has length 60 [2022-12-14 14:00:02,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:02,653 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 377 transitions. [2022-12-14 14:00:02,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:02,653 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 377 transitions. [2022-12-14 14:00:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 14:00:02,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:02,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:02,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 14:00:02,654 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:02,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1013492058, now seen corresponding path program 1 times [2022-12-14 14:00:02,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:02,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968873261] [2022-12-14 14:00:02,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:02,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:02,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:02,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:02,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968873261] [2022-12-14 14:00:02,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968873261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:02,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:02,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 14:00:02,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367547708] [2022-12-14 14:00:02,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:02,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 14:00:02,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:02,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 14:00:02,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-14 14:00:02,882 INFO L87 Difference]: Start difference. First operand 298 states and 377 transitions. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:03,466 INFO L93 Difference]: Finished difference Result 620 states and 797 transitions. [2022-12-14 14:00:03,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:00:03,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 14:00:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:03,468 INFO L225 Difference]: With dead ends: 620 [2022-12-14 14:00:03,468 INFO L226 Difference]: Without dead ends: 603 [2022-12-14 14:00:03,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-12-14 14:00:03,470 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 1148 mSDsluCounter, 869 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:03,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 1093 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:00:03,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-12-14 14:00:03,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 298. [2022-12-14 14:00:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.3066202090592334) internal successors, (375), 297 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:03,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 375 transitions. [2022-12-14 14:00:03,512 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 375 transitions. Word has length 60 [2022-12-14 14:00:03,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:03,513 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 375 transitions. [2022-12-14 14:00:03,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:03,513 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 375 transitions. [2022-12-14 14:00:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 14:00:03,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:03,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:03,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 14:00:03,514 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:03,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:03,515 INFO L85 PathProgramCache]: Analyzing trace with hash -699637619, now seen corresponding path program 1 times [2022-12-14 14:00:03,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:03,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374210195] [2022-12-14 14:00:03,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:03,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:03,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:03,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374210195] [2022-12-14 14:00:03,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374210195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:03,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:03,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 14:00:03,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441143399] [2022-12-14 14:00:03,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:03,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:00:03,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:03,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:00:03,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:00:03,667 INFO L87 Difference]: Start difference. First operand 298 states and 375 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:04,010 INFO L93 Difference]: Finished difference Result 572 states and 707 transitions. [2022-12-14 14:00:04,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 14:00:04,011 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 14:00:04,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:04,012 INFO L225 Difference]: With dead ends: 572 [2022-12-14 14:00:04,012 INFO L226 Difference]: Without dead ends: 425 [2022-12-14 14:00:04,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:00:04,013 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1241 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:04,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 378 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:00:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-12-14 14:00:04,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 298. [2022-12-14 14:00:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.3031358885017421) internal successors, (374), 297 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:04,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 374 transitions. [2022-12-14 14:00:04,042 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 374 transitions. Word has length 60 [2022-12-14 14:00:04,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:04,042 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 374 transitions. [2022-12-14 14:00:04,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 374 transitions. [2022-12-14 14:00:04,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 14:00:04,043 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:04,043 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] [2022-12-14 14:00:04,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 14:00:04,044 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:04,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:04,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1319054290, now seen corresponding path program 1 times [2022-12-14 14:00:04,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:04,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575029628] [2022-12-14 14:00:04,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:04,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:04,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:04,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575029628] [2022-12-14 14:00:04,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575029628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:04,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:04,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:04,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608047994] [2022-12-14 14:00:04,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:04,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:04,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:04,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:04,221 INFO L87 Difference]: Start difference. First operand 298 states and 374 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:04,816 INFO L93 Difference]: Finished difference Result 596 states and 753 transitions. [2022-12-14 14:00:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:00:04,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 14:00:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:04,818 INFO L225 Difference]: With dead ends: 596 [2022-12-14 14:00:04,818 INFO L226 Difference]: Without dead ends: 591 [2022-12-14 14:00:04,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:00:04,819 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 1087 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:04,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 844 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:00:04,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-12-14 14:00:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 298. [2022-12-14 14:00:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.2961672473867596) internal successors, (372), 297 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:04,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 372 transitions. [2022-12-14 14:00:04,849 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 372 transitions. Word has length 62 [2022-12-14 14:00:04,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:04,850 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 372 transitions. [2022-12-14 14:00:04,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:04,850 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 372 transitions. [2022-12-14 14:00:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 14:00:04,850 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:04,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:04,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 14:00:04,851 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:04,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:04,851 INFO L85 PathProgramCache]: Analyzing trace with hash -806955644, now seen corresponding path program 1 times [2022-12-14 14:00:04,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:04,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927755233] [2022-12-14 14:00:04,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:04,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:04,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:04,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927755233] [2022-12-14 14:00:04,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927755233] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:04,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:04,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:04,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074437455] [2022-12-14 14:00:04,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:04,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:04,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:04,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:04,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:04,994 INFO L87 Difference]: Start difference. First operand 298 states and 372 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:05,413 INFO L93 Difference]: Finished difference Result 506 states and 644 transitions. [2022-12-14 14:00:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 14:00:05,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 14:00:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:05,414 INFO L225 Difference]: With dead ends: 506 [2022-12-14 14:00:05,414 INFO L226 Difference]: Without dead ends: 374 [2022-12-14 14:00:05,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-12-14 14:00:05,415 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 635 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:05,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 724 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:00:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-12-14 14:00:05,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 298. [2022-12-14 14:00:05,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.289198606271777) internal successors, (370), 297 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:05,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 370 transitions. [2022-12-14 14:00:05,461 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 370 transitions. Word has length 62 [2022-12-14 14:00:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:05,461 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 370 transitions. [2022-12-14 14:00:05,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 370 transitions. [2022-12-14 14:00:05,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 14:00:05,462 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:05,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 14:00:05,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2033918897, now seen corresponding path program 1 times [2022-12-14 14:00:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:05,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232644333] [2022-12-14 14:00:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:05,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:05,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232644333] [2022-12-14 14:00:05,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232644333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:05,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:05,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:05,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224785795] [2022-12-14 14:00:05,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:05,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:05,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:05,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:05,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:05,624 INFO L87 Difference]: Start difference. First operand 298 states and 370 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:06,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:06,150 INFO L93 Difference]: Finished difference Result 696 states and 891 transitions. [2022-12-14 14:00:06,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:00:06,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 14:00:06,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:06,152 INFO L225 Difference]: With dead ends: 696 [2022-12-14 14:00:06,152 INFO L226 Difference]: Without dead ends: 611 [2022-12-14 14:00:06,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 14:00:06,152 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 721 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 721 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:06,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [721 Valid, 970 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:00:06,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-12-14 14:00:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 298. [2022-12-14 14:00:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.2857142857142858) internal successors, (369), 297 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 369 transitions. [2022-12-14 14:00:06,188 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 369 transitions. Word has length 62 [2022-12-14 14:00:06,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:06,189 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 369 transitions. [2022-12-14 14:00:06,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:06,189 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 369 transitions. [2022-12-14 14:00:06,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 14:00:06,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:06,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:06,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 14:00:06,190 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:06,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:06,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1443459928, now seen corresponding path program 1 times [2022-12-14 14:00:06,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:06,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842394869] [2022-12-14 14:00:06,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:06,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:06,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:06,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:06,359 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:06,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842394869] [2022-12-14 14:00:06,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842394869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:06,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:06,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:06,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496755806] [2022-12-14 14:00:06,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:06,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:06,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:06,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:06,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:06,361 INFO L87 Difference]: Start difference. First operand 298 states and 369 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:06,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:06,852 INFO L93 Difference]: Finished difference Result 664 states and 841 transitions. [2022-12-14 14:00:06,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:00:06,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 14:00:06,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:06,854 INFO L225 Difference]: With dead ends: 664 [2022-12-14 14:00:06,854 INFO L226 Difference]: Without dead ends: 591 [2022-12-14 14:00:06,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:00:06,854 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 1037 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:06,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 895 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:00:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-12-14 14:00:06,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 298. [2022-12-14 14:00:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.2822299651567943) internal successors, (368), 297 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 368 transitions. [2022-12-14 14:00:06,891 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 368 transitions. Word has length 62 [2022-12-14 14:00:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:06,891 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 368 transitions. [2022-12-14 14:00:06,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 368 transitions. [2022-12-14 14:00:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 14:00:06,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:06,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:06,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 14:00:06,892 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:06,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:06,893 INFO L85 PathProgramCache]: Analyzing trace with hash 823720425, now seen corresponding path program 1 times [2022-12-14 14:00:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:06,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231293454] [2022-12-14 14:00:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:06,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:07,021 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:07,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231293454] [2022-12-14 14:00:07,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231293454] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:07,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:07,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:07,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858578385] [2022-12-14 14:00:07,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:07,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:07,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:07,022 INFO L87 Difference]: Start difference. First operand 298 states and 368 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:07,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:07,582 INFO L93 Difference]: Finished difference Result 596 states and 747 transitions. [2022-12-14 14:00:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:00:07,583 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 14:00:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:07,584 INFO L225 Difference]: With dead ends: 596 [2022-12-14 14:00:07,584 INFO L226 Difference]: Without dead ends: 591 [2022-12-14 14:00:07,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 14:00:07,584 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 1011 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:07,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 909 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:00:07,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-12-14 14:00:07,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 298. [2022-12-14 14:00:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.278745644599303) internal successors, (367), 297 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 367 transitions. [2022-12-14 14:00:07,624 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 367 transitions. Word has length 62 [2022-12-14 14:00:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:07,624 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 367 transitions. [2022-12-14 14:00:07,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 367 transitions. [2022-12-14 14:00:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 14:00:07,625 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:07,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:07,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 14:00:07,625 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:07,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:07,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2020699465, now seen corresponding path program 1 times [2022-12-14 14:00:07,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:07,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791811133] [2022-12-14 14:00:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:07,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:07,776 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:07,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791811133] [2022-12-14 14:00:07,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791811133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:07,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:07,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:07,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993811283] [2022-12-14 14:00:07,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:07,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:07,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:07,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:07,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:07,778 INFO L87 Difference]: Start difference. First operand 298 states and 367 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:08,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:08,340 INFO L93 Difference]: Finished difference Result 661 states and 835 transitions. [2022-12-14 14:00:08,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 14:00:08,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 14:00:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:08,341 INFO L225 Difference]: With dead ends: 661 [2022-12-14 14:00:08,341 INFO L226 Difference]: Without dead ends: 591 [2022-12-14 14:00:08,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:00:08,342 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1046 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 859 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:08,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 859 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 14:00:08,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-12-14 14:00:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 298. [2022-12-14 14:00:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 287 states have (on average 1.2752613240418118) internal successors, (366), 297 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 366 transitions. [2022-12-14 14:00:08,383 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 366 transitions. Word has length 62 [2022-12-14 14:00:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:08,383 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 366 transitions. [2022-12-14 14:00:08,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:08,384 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 366 transitions. [2022-12-14 14:00:08,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 14:00:08,384 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:08,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:08,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 14:00:08,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:08,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:08,385 INFO L85 PathProgramCache]: Analyzing trace with hash -29192250, now seen corresponding path program 1 times [2022-12-14 14:00:08,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:08,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166230020] [2022-12-14 14:00:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:08,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:08,746 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:08,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166230020] [2022-12-14 14:00:08,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166230020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:08,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:08,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 14:00:08,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705867629] [2022-12-14 14:00:08,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:08,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 14:00:08,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:08,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 14:00:08,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:00:08,748 INFO L87 Difference]: Start difference. First operand 298 states and 366 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:09,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:09,747 INFO L93 Difference]: Finished difference Result 688 states and 828 transitions. [2022-12-14 14:00:09,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 14:00:09,747 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 14:00:09,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:09,749 INFO L225 Difference]: With dead ends: 688 [2022-12-14 14:00:09,749 INFO L226 Difference]: Without dead ends: 684 [2022-12-14 14:00:09,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2022-12-14 14:00:09,749 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 1233 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:09,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1233 Valid, 2083 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:00:09,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-12-14 14:00:09,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 294. [2022-12-14 14:00:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 284 states have (on average 1.2746478873239437) internal successors, (362), 293 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:09,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 362 transitions. [2022-12-14 14:00:09,803 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 362 transitions. Word has length 64 [2022-12-14 14:00:09,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:09,803 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 362 transitions. [2022-12-14 14:00:09,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:09,803 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 362 transitions. [2022-12-14 14:00:09,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 14:00:09,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:09,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:09,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 14:00:09,804 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:09,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2063869805, now seen corresponding path program 1 times [2022-12-14 14:00:09,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:09,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052410753] [2022-12-14 14:00:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:09,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:10,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:10,485 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:10,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052410753] [2022-12-14 14:00:10,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052410753] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:10,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:10,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 14:00:10,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813727736] [2022-12-14 14:00:10,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:10,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-14 14:00:10,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:10,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-14 14:00:10,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2022-12-14 14:00:10,488 INFO L87 Difference]: Start difference. First operand 294 states and 362 transitions. Second operand has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:12,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:12,484 INFO L93 Difference]: Finished difference Result 609 states and 750 transitions. [2022-12-14 14:00:12,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 14:00:12,485 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 14:00:12,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:12,486 INFO L225 Difference]: With dead ends: 609 [2022-12-14 14:00:12,486 INFO L226 Difference]: Without dead ends: 534 [2022-12-14 14:00:12,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=237, Invalid=1323, Unknown=0, NotChecked=0, Total=1560 [2022-12-14 14:00:12,487 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1204 mSDsluCounter, 3956 mSDsCounter, 0 mSdLazyCounter, 2360 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 4340 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:12,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1204 Valid, 4340 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2360 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-14 14:00:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-14 14:00:12,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 293. [2022-12-14 14:00:12,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 283 states have (on average 1.2685512367491165) internal successors, (359), 292 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 359 transitions. [2022-12-14 14:00:12,545 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 359 transitions. Word has length 64 [2022-12-14 14:00:12,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:12,545 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 359 transitions. [2022-12-14 14:00:12,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.909090909090909) internal successors, (64), 22 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:12,546 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 359 transitions. [2022-12-14 14:00:12,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 14:00:12,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:12,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:12,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 14:00:12,546 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:12,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:12,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1085248927, now seen corresponding path program 1 times [2022-12-14 14:00:12,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:12,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874480255] [2022-12-14 14:00:12,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:12,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:12,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:12,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:12,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874480255] [2022-12-14 14:00:12,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874480255] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:12,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:12,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 14:00:12,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430621055] [2022-12-14 14:00:12,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:12,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 14:00:12,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:12,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 14:00:12,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:00:12,861 INFO L87 Difference]: Start difference. First operand 293 states and 359 transitions. Second operand has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:13,929 INFO L93 Difference]: Finished difference Result 844 states and 1081 transitions. [2022-12-14 14:00:13,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 14:00:13,930 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 14:00:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:13,931 INFO L225 Difference]: With dead ends: 844 [2022-12-14 14:00:13,931 INFO L226 Difference]: Without dead ends: 754 [2022-12-14 14:00:13,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-12-14 14:00:13,932 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1311 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2385 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:13,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2385 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:00:13,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-12-14 14:00:13,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 271. [2022-12-14 14:00:13,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 263 states have (on average 1.2509505703422052) internal successors, (329), 270 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 329 transitions. [2022-12-14 14:00:13,999 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 329 transitions. Word has length 64 [2022-12-14 14:00:13,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:13,999 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 329 transitions. [2022-12-14 14:00:13,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:13,999 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 329 transitions. [2022-12-14 14:00:13,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 14:00:14,000 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:14,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 14:00:14,000 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:14,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:14,000 INFO L85 PathProgramCache]: Analyzing trace with hash 632833740, now seen corresponding path program 1 times [2022-12-14 14:00:14,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:14,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412039484] [2022-12-14 14:00:14,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:14,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:14,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:14,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:14,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:14,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412039484] [2022-12-14 14:00:14,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412039484] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:14,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:14,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 14:00:14,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089882814] [2022-12-14 14:00:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:14,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 14:00:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:14,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 14:00:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:00:14,429 INFO L87 Difference]: Start difference. First operand 271 states and 329 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:15,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:15,697 INFO L93 Difference]: Finished difference Result 717 states and 871 transitions. [2022-12-14 14:00:15,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 14:00:15,698 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 14:00:15,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:15,699 INFO L225 Difference]: With dead ends: 717 [2022-12-14 14:00:15,699 INFO L226 Difference]: Without dead ends: 645 [2022-12-14 14:00:15,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2022-12-14 14:00:15,700 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 1569 mSDsluCounter, 1514 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:15,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 1752 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 707 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:00:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-12-14 14:00:15,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 267. [2022-12-14 14:00:15,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 260 states have (on average 1.2461538461538462) internal successors, (324), 266 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:15,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 324 transitions. [2022-12-14 14:00:15,776 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 324 transitions. Word has length 64 [2022-12-14 14:00:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:15,777 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 324 transitions. [2022-12-14 14:00:15,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 324 transitions. [2022-12-14 14:00:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 14:00:15,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:15,777 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:15,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 14:00:15,777 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:15,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:15,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1854610684, now seen corresponding path program 1 times [2022-12-14 14:00:15,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:15,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938608356] [2022-12-14 14:00:15,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:15,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:16,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:16,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:16,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938608356] [2022-12-14 14:00:16,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938608356] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:16,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:16,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 14:00:16,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232866431] [2022-12-14 14:00:16,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:16,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 14:00:16,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:16,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 14:00:16,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 14:00:16,056 INFO L87 Difference]: Start difference. First operand 267 states and 324 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:16,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:16,614 INFO L93 Difference]: Finished difference Result 535 states and 660 transitions. [2022-12-14 14:00:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:00:16,614 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 14:00:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:16,615 INFO L225 Difference]: With dead ends: 535 [2022-12-14 14:00:16,615 INFO L226 Difference]: Without dead ends: 408 [2022-12-14 14:00:16,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-12-14 14:00:16,616 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1085 mSDsluCounter, 542 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:16,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1085 Valid, 791 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-12-14 14:00:16,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 208. [2022-12-14 14:00:16,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.2352941176470589) internal successors, (252), 207 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 252 transitions. [2022-12-14 14:00:16,690 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 252 transitions. Word has length 64 [2022-12-14 14:00:16,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:16,690 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 252 transitions. [2022-12-14 14:00:16,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 9 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:16,690 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 252 transitions. [2022-12-14 14:00:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:00:16,690 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:16,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:16,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 14:00:16,691 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:16,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:16,691 INFO L85 PathProgramCache]: Analyzing trace with hash -735435847, now seen corresponding path program 1 times [2022-12-14 14:00:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:16,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861730790] [2022-12-14 14:00:16,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:16,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:16,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:16,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:16,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861730790] [2022-12-14 14:00:16,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861730790] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:16,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:16,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978939443] [2022-12-14 14:00:16,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:16,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:16,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:16,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:16,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:16,811 INFO L87 Difference]: Start difference. First operand 208 states and 252 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:17,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:17,242 INFO L93 Difference]: Finished difference Result 333 states and 406 transitions. [2022-12-14 14:00:17,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 14:00:17,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 14:00:17,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:17,243 INFO L225 Difference]: With dead ends: 333 [2022-12-14 14:00:17,243 INFO L226 Difference]: Without dead ends: 326 [2022-12-14 14:00:17,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-12-14 14:00:17,243 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 607 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:17,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 429 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:00:17,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-12-14 14:00:17,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 208. [2022-12-14 14:00:17,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 204 states have (on average 1.2303921568627452) internal successors, (251), 207 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 251 transitions. [2022-12-14 14:00:17,316 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 251 transitions. Word has length 65 [2022-12-14 14:00:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:17,316 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 251 transitions. [2022-12-14 14:00:17,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:17,316 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 251 transitions. [2022-12-14 14:00:17,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:00:17,316 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:17,316 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:17,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 14:00:17,317 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:17,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:17,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1053254316, now seen corresponding path program 1 times [2022-12-14 14:00:17,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:17,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679674920] [2022-12-14 14:00:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:17,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:17,619 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:17,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679674920] [2022-12-14 14:00:17,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679674920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:17,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:17,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-14 14:00:17,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532080357] [2022-12-14 14:00:17,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:17,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 14:00:17,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:17,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 14:00:17,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-14 14:00:17,621 INFO L87 Difference]: Start difference. First operand 208 states and 251 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:18,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:18,104 INFO L93 Difference]: Finished difference Result 355 states and 443 transitions. [2022-12-14 14:00:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 14:00:18,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 14:00:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:18,105 INFO L225 Difference]: With dead ends: 355 [2022-12-14 14:00:18,105 INFO L226 Difference]: Without dead ends: 283 [2022-12-14 14:00:18,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:00:18,106 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 475 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:18,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 1184 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:18,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-12-14 14:00:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 171. [2022-12-14 14:00:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 1.2248520710059172) internal successors, (207), 170 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 207 transitions. [2022-12-14 14:00:18,176 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 207 transitions. Word has length 65 [2022-12-14 14:00:18,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:18,177 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 207 transitions. [2022-12-14 14:00:18,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 207 transitions. [2022-12-14 14:00:18,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 14:00:18,177 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:18,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:18,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 14:00:18,177 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:18,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:18,178 INFO L85 PathProgramCache]: Analyzing trace with hash 2125205281, now seen corresponding path program 1 times [2022-12-14 14:00:18,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:18,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344644633] [2022-12-14 14:00:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:18,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:18,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:18,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:18,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344644633] [2022-12-14 14:00:18,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344644633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:18,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:18,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:18,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710781607] [2022-12-14 14:00:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:18,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:18,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:18,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:18,292 INFO L87 Difference]: Start difference. First operand 171 states and 207 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:18,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:18,683 INFO L93 Difference]: Finished difference Result 385 states and 483 transitions. [2022-12-14 14:00:18,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 14:00:18,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-12-14 14:00:18,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:18,684 INFO L225 Difference]: With dead ends: 385 [2022-12-14 14:00:18,684 INFO L226 Difference]: Without dead ends: 287 [2022-12-14 14:00:18,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 14:00:18,685 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 465 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:18,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 364 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:18,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-12-14 14:00:18,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 171. [2022-12-14 14:00:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 1.21301775147929) internal successors, (205), 170 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:18,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 205 transitions. [2022-12-14 14:00:18,758 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 205 transitions. Word has length 65 [2022-12-14 14:00:18,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:18,758 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 205 transitions. [2022-12-14 14:00:18,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:18,758 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 205 transitions. [2022-12-14 14:00:18,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 14:00:18,759 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:18,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:18,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 14:00:18,759 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:18,759 INFO L85 PathProgramCache]: Analyzing trace with hash 846749532, now seen corresponding path program 1 times [2022-12-14 14:00:18,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:18,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469034301] [2022-12-14 14:00:18,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:18,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:19,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:19,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469034301] [2022-12-14 14:00:19,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469034301] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:19,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:19,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 14:00:19,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304556820] [2022-12-14 14:00:19,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:19,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 14:00:19,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 14:00:19,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-12-14 14:00:19,397 INFO L87 Difference]: Start difference. First operand 171 states and 205 transitions. Second operand has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:20,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:20,827 INFO L93 Difference]: Finished difference Result 566 states and 723 transitions. [2022-12-14 14:00:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-14 14:00:20,828 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-14 14:00:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:20,831 INFO L225 Difference]: With dead ends: 566 [2022-12-14 14:00:20,831 INFO L226 Difference]: Without dead ends: 560 [2022-12-14 14:00:20,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=1369, Unknown=0, NotChecked=0, Total=1640 [2022-12-14 14:00:20,832 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 626 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:20,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 2247 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:00:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-12-14 14:00:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 182. [2022-12-14 14:00:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.2166666666666666) internal successors, (219), 181 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 219 transitions. [2022-12-14 14:00:20,924 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 219 transitions. Word has length 67 [2022-12-14 14:00:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:20,925 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 219 transitions. [2022-12-14 14:00:20,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 219 transitions. [2022-12-14 14:00:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-14 14:00:20,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:20,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:20,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 14:00:20,925 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:20,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:20,926 INFO L85 PathProgramCache]: Analyzing trace with hash 766856175, now seen corresponding path program 1 times [2022-12-14 14:00:20,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:20,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344214079] [2022-12-14 14:00:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:20,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:21,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:21,247 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:21,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344214079] [2022-12-14 14:00:21,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344214079] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:21,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:21,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 14:00:21,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798212998] [2022-12-14 14:00:21,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:21,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 14:00:21,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 14:00:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 14:00:21,249 INFO L87 Difference]: Start difference. First operand 182 states and 219 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:22,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:22,792 INFO L93 Difference]: Finished difference Result 736 states and 947 transitions. [2022-12-14 14:00:22,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 14:00:22,792 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-12-14 14:00:22,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:22,794 INFO L225 Difference]: With dead ends: 736 [2022-12-14 14:00:22,794 INFO L226 Difference]: Without dead ends: 730 [2022-12-14 14:00:22,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-12-14 14:00:22,794 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 771 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:22,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 2150 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 14:00:22,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-12-14 14:00:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 165. [2022-12-14 14:00:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.2073170731707317) internal successors, (198), 164 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:22,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 198 transitions. [2022-12-14 14:00:22,877 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 198 transitions. Word has length 68 [2022-12-14 14:00:22,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:22,877 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 198 transitions. [2022-12-14 14:00:22,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 198 transitions. [2022-12-14 14:00:22,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 14:00:22,878 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:22,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:22,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 14:00:22,878 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash 41010503, now seen corresponding path program 1 times [2022-12-14 14:00:22,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:22,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428310698] [2022-12-14 14:00:22,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:22,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:22,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:22,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428310698] [2022-12-14 14:00:22,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428310698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:22,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:22,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:00:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044189106] [2022-12-14 14:00:22,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:00:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:00:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:00:22,933 INFO L87 Difference]: Start difference. First operand 165 states and 198 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:23,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:23,071 INFO L93 Difference]: Finished difference Result 241 states and 300 transitions. [2022-12-14 14:00:23,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:00:23,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-12-14 14:00:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:23,072 INFO L225 Difference]: With dead ends: 241 [2022-12-14 14:00:23,072 INFO L226 Difference]: Without dead ends: 206 [2022-12-14 14:00:23,073 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 [2022-12-14 14:00:23,073 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 53 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:23,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 234 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:00:23,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-12-14 14:00:23,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 196. [2022-12-14 14:00:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.2256410256410257) internal successors, (239), 195 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 239 transitions. [2022-12-14 14:00:23,185 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 239 transitions. Word has length 81 [2022-12-14 14:00:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:23,185 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 239 transitions. [2022-12-14 14:00:23,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 239 transitions. [2022-12-14 14:00:23,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 14:00:23,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:23,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:23,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 14:00:23,186 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:23,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:23,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1034208636, now seen corresponding path program 1 times [2022-12-14 14:00:23,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:23,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552951131] [2022-12-14 14:00:23,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:23,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:23,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:23,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:23,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552951131] [2022-12-14 14:00:23,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552951131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:23,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:23,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:00:23,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536098007] [2022-12-14 14:00:23,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:23,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:00:23,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:23,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:00:23,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:00:23,240 INFO L87 Difference]: Start difference. First operand 196 states and 239 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2022-12-14 14:00:23,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:23,473 INFO L93 Difference]: Finished difference Result 390 states and 501 transitions. [2022-12-14 14:00:23,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:00:23,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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 84 [2022-12-14 14:00:23,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:23,474 INFO L225 Difference]: With dead ends: 390 [2022-12-14 14:00:23,474 INFO L226 Difference]: Without dead ends: 293 [2022-12-14 14:00:23,475 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 [2022-12-14 14:00:23,475 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 46 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:23,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 234 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:00:23,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-12-14 14:00:23,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 279. [2022-12-14 14:00:23,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.2625899280575539) internal successors, (351), 278 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:23,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 351 transitions. [2022-12-14 14:00:23,663 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 351 transitions. Word has length 84 [2022-12-14 14:00:23,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:23,663 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 351 transitions. [2022-12-14 14:00:23,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 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) [2022-12-14 14:00:23,664 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 351 transitions. [2022-12-14 14:00:23,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 14:00:23,664 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:23,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:23,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 14:00:23,664 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:23,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:23,665 INFO L85 PathProgramCache]: Analyzing trace with hash 11056114, now seen corresponding path program 1 times [2022-12-14 14:00:23,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:23,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451111683] [2022-12-14 14:00:23,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:23,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:23,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:23,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451111683] [2022-12-14 14:00:23,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451111683] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:23,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:23,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:00:23,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102648587] [2022-12-14 14:00:23,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:23,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:00:23,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:23,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:00:23,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:00:23,725 INFO L87 Difference]: Start difference. First operand 279 states and 351 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:24,133 INFO L93 Difference]: Finished difference Result 639 states and 837 transitions. [2022-12-14 14:00:24,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:00:24,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-12-14 14:00:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:24,135 INFO L225 Difference]: With dead ends: 639 [2022-12-14 14:00:24,135 INFO L226 Difference]: Without dead ends: 459 [2022-12-14 14:00:24,135 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 [2022-12-14 14:00:24,136 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 39 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:24,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 234 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:00:24,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-12-14 14:00:24,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 433. [2022-12-14 14:00:24,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 1.2893518518518519) internal successors, (557), 432 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:24,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 557 transitions. [2022-12-14 14:00:24,476 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 557 transitions. Word has length 87 [2022-12-14 14:00:24,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:24,477 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 557 transitions. [2022-12-14 14:00:24,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:24,477 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 557 transitions. [2022-12-14 14:00:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 14:00:24,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:24,478 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:24,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 14:00:24,478 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:24,478 INFO L85 PathProgramCache]: Analyzing trace with hash 378871211, now seen corresponding path program 1 times [2022-12-14 14:00:24,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:24,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896658598] [2022-12-14 14:00:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:24,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:24,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:24,532 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:24,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896658598] [2022-12-14 14:00:24,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896658598] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:24,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:24,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:00:24,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944596539] [2022-12-14 14:00:24,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:24,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:00:24,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:24,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:00:24,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:00:24,534 INFO L87 Difference]: Start difference. First operand 433 states and 557 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:25,263 INFO L93 Difference]: Finished difference Result 1101 states and 1455 transitions. [2022-12-14 14:00:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:00:25,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-12-14 14:00:25,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:25,265 INFO L225 Difference]: With dead ends: 1101 [2022-12-14 14:00:25,265 INFO L226 Difference]: Without dead ends: 767 [2022-12-14 14:00:25,266 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 [2022-12-14 14:00:25,266 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 29 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:25,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 234 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:00:25,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-12-14 14:00:25,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 717. [2022-12-14 14:00:25,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 1.303072625698324) internal successors, (933), 716 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:25,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 933 transitions. [2022-12-14 14:00:25,928 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 933 transitions. Word has length 90 [2022-12-14 14:00:25,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:25,929 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 933 transitions. [2022-12-14 14:00:25,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:25,929 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 933 transitions. [2022-12-14 14:00:25,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 14:00:25,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:25,929 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:25,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 14:00:25,929 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:25,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:25,930 INFO L85 PathProgramCache]: Analyzing trace with hash 823532023, now seen corresponding path program 1 times [2022-12-14 14:00:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:25,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131909706] [2022-12-14 14:00:25,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:25,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:25,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:25,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:25,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131909706] [2022-12-14 14:00:25,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131909706] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:25,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:25,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 14:00:25,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277314715] [2022-12-14 14:00:25,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:25,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:00:25,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:25,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:00:25,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:00:25,987 INFO L87 Difference]: Start difference. First operand 717 states and 933 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:28,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:28,224 INFO L93 Difference]: Finished difference Result 2718 states and 3598 transitions. [2022-12-14 14:00:28,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 14:00:28,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 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 [2022-12-14 14:00:28,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:28,229 INFO L225 Difference]: With dead ends: 2718 [2022-12-14 14:00:28,229 INFO L226 Difference]: Without dead ends: 2100 [2022-12-14 14:00:28,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-14 14:00:28,230 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 514 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:28,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 745 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-12-14 14:00:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 1047. [2022-12-14 14:00:29,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 1.2992351816443595) internal successors, (1359), 1046 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1359 transitions. [2022-12-14 14:00:29,293 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1359 transitions. Word has length 93 [2022-12-14 14:00:29,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:29,293 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1359 transitions. [2022-12-14 14:00:29,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1359 transitions. [2022-12-14 14:00:29,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 14:00:29,293 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:29,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:29,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 14:00:29,294 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:29,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1187933713, now seen corresponding path program 1 times [2022-12-14 14:00:29,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:29,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118861177] [2022-12-14 14:00:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:29,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:29,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:29,413 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:29,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118861177] [2022-12-14 14:00:29,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118861177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:29,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:29,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 14:00:29,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075956872] [2022-12-14 14:00:29,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:29,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 14:00:29,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:29,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 14:00:29,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 14:00:29,414 INFO L87 Difference]: Start difference. First operand 1047 states and 1359 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:30,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:30,528 INFO L93 Difference]: Finished difference Result 1997 states and 2611 transitions. [2022-12-14 14:00:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 14:00:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-12-14 14:00:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:30,531 INFO L225 Difference]: With dead ends: 1997 [2022-12-14 14:00:30,531 INFO L226 Difference]: Without dead ends: 1049 [2022-12-14 14:00:30,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:30,532 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 124 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:30,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 241 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:30,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2022-12-14 14:00:31,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 1047. [2022-12-14 14:00:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 1.2973231357552581) internal successors, (1357), 1046 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:31,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1357 transitions. [2022-12-14 14:00:31,599 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1357 transitions. Word has length 95 [2022-12-14 14:00:31,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:31,599 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1357 transitions. [2022-12-14 14:00:31,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1357 transitions. [2022-12-14 14:00:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-14 14:00:31,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:31,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:31,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 14:00:31,600 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:31,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash 746842782, now seen corresponding path program 1 times [2022-12-14 14:00:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:31,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599979413] [2022-12-14 14:00:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:31,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:31,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:31,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:31,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599979413] [2022-12-14 14:00:31,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599979413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:31,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:31,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 14:00:31,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148256111] [2022-12-14 14:00:31,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:31,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 14:00:31,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:31,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 14:00:31,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 14:00:31,637 INFO L87 Difference]: Start difference. First operand 1047 states and 1357 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:32,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:32,971 INFO L93 Difference]: Finished difference Result 2229 states and 2919 transitions. [2022-12-14 14:00:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 14:00:32,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-12-14 14:00:32,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:32,974 INFO L225 Difference]: With dead ends: 2229 [2022-12-14 14:00:32,974 INFO L226 Difference]: Without dead ends: 1281 [2022-12-14 14:00:32,975 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 [2022-12-14 14:00:32,975 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 63 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:32,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 181 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 14:00:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-12-14 14:00:34,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1279. [2022-12-14 14:00:34,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 1.2918622848200314) internal successors, (1651), 1278 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:34,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1651 transitions. [2022-12-14 14:00:34,237 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1651 transitions. Word has length 95 [2022-12-14 14:00:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:34,237 INFO L495 AbstractCegarLoop]: Abstraction has 1279 states and 1651 transitions. [2022-12-14 14:00:34,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1651 transitions. [2022-12-14 14:00:34,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 14:00:34,238 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:34,238 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:34,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 14:00:34,238 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash -910254247, now seen corresponding path program 1 times [2022-12-14 14:00:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:34,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073381603] [2022-12-14 14:00:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:34,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:34,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:34,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:34,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073381603] [2022-12-14 14:00:34,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073381603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:34,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:34,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:34,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88378722] [2022-12-14 14:00:34,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:34,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 14:00:34,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:34,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 14:00:34,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 14:00:34,382 INFO L87 Difference]: Start difference. First operand 1279 states and 1651 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:36,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:36,585 INFO L93 Difference]: Finished difference Result 1769 states and 2244 transitions. [2022-12-14 14:00:36,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 14:00:36,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-12-14 14:00:36,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:36,591 INFO L225 Difference]: With dead ends: 1769 [2022-12-14 14:00:36,591 INFO L226 Difference]: Without dead ends: 1767 [2022-12-14 14:00:36,591 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 [2022-12-14 14:00:36,592 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 268 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:36,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 753 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 14:00:36,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1767 states. [2022-12-14 14:00:37,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1767 to 1279. [2022-12-14 14:00:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 1.2730829420970267) internal successors, (1627), 1278 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:37,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1627 transitions. [2022-12-14 14:00:37,900 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1627 transitions. Word has length 96 [2022-12-14 14:00:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:37,900 INFO L495 AbstractCegarLoop]: Abstraction has 1279 states and 1627 transitions. [2022-12-14 14:00:37,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1627 transitions. [2022-12-14 14:00:37,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-14 14:00:37,901 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:37,901 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:37,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 14:00:37,901 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:37,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1260253036, now seen corresponding path program 1 times [2022-12-14 14:00:37,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:37,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105879399] [2022-12-14 14:00:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:37,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:37,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:00:38,078 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:38,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105879399] [2022-12-14 14:00:38,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105879399] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:38,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:38,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 14:00:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733100606] [2022-12-14 14:00:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:38,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 14:00:38,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:38,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 14:00:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 14:00:38,080 INFO L87 Difference]: Start difference. First operand 1279 states and 1627 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:40,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:40,528 INFO L93 Difference]: Finished difference Result 3211 states and 4098 transitions. [2022-12-14 14:00:40,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 14:00:40,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 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 110 [2022-12-14 14:00:40,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:40,533 INFO L225 Difference]: With dead ends: 3211 [2022-12-14 14:00:40,533 INFO L226 Difference]: Without dead ends: 2017 [2022-12-14 14:00:40,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 14:00:40,534 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 421 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:40,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 322 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 14:00:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-12-14 14:00:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1279. [2022-12-14 14:00:41,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 1278 states have (on average 1.2715179968701096) internal successors, (1625), 1278 states have internal predecessors, (1625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:41,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1625 transitions. [2022-12-14 14:00:41,855 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1625 transitions. Word has length 110 [2022-12-14 14:00:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:41,855 INFO L495 AbstractCegarLoop]: Abstraction has 1279 states and 1625 transitions. [2022-12-14 14:00:41,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1625 transitions. [2022-12-14 14:00:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-14 14:00:41,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:41,856 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 14:00:41,856 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:41,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:41,856 INFO L85 PathProgramCache]: Analyzing trace with hash -280252689, now seen corresponding path program 1 times [2022-12-14 14:00:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:41,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184593673] [2022-12-14 14:00:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:41,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-14 14:00:42,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:42,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184593673] [2022-12-14 14:00:42,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184593673] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 14:00:42,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 14:00:42,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 14:00:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328667786] [2022-12-14 14:00:42,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 14:00:42,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 14:00:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 14:00:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 14:00:42,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2022-12-14 14:00:42,618 INFO L87 Difference]: Start difference. First operand 1279 states and 1625 transitions. Second operand has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:46,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 14:00:46,315 INFO L93 Difference]: Finished difference Result 3672 states and 4698 transitions. [2022-12-14 14:00:46,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 14:00:46,315 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 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 112 [2022-12-14 14:00:46,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 14:00:46,319 INFO L225 Difference]: With dead ends: 3672 [2022-12-14 14:00:46,319 INFO L226 Difference]: Without dead ends: 2483 [2022-12-14 14:00:46,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 14:00:46,321 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 366 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 14:00:46,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1649 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 857 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 14:00:46,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2022-12-14 14:00:47,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 1289. [2022-12-14 14:00:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 1288 states have (on average 1.2701863354037266) internal successors, (1636), 1288 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:47,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1636 transitions. [2022-12-14 14:00:47,651 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1636 transitions. Word has length 112 [2022-12-14 14:00:47,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 14:00:47,651 INFO L495 AbstractCegarLoop]: Abstraction has 1289 states and 1636 transitions. [2022-12-14 14:00:47,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.9523809523809526) internal successors, (104), 21 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 14:00:47,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1636 transitions. [2022-12-14 14:00:47,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-14 14:00:47,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 14:00:47,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 14:00:47,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 14:00:47,652 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 14:00:47,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 14:00:47,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1144744644, now seen corresponding path program 1 times [2022-12-14 14:00:47,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 14:00:47,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068361413] [2022-12-14 14:00:47,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:47,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 14:00:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:49,923 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:49,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 14:00:49,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068361413] [2022-12-14 14:00:49,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068361413] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 14:00:49,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075117402] [2022-12-14 14:00:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 14:00:49,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 14:00:49,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 14:00:49,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 14:00:49,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57a462f7-0999-4110-b478-38a22c3310a6/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 14:00:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 14:00:50,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 72 conjunts are in the unsatisfiable core [2022-12-14 14:00:50,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 14:00:57,880 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 14:00:57,881 INFO L328 TraceCheckSpWp]: Computing backward predicates...