./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 08e27279d8b0f092d8b126b1fa68f6a49bc0b5cda6842121ef1790310988da5f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:49:02,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:49:02,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:49:03,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:49:03,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:49:03,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:49:03,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:49:03,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:49:03,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:49:03,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:49:03,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:49:03,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:49:03,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:49:03,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:49:03,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:49:03,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:49:03,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:49:03,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:49:03,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:49:03,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:49:03,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:49:03,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:49:03,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:49:03,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:49:03,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:49:03,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:49:03,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:49:03,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:49:03,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:49:03,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:49:03,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:49:03,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:49:03,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:49:03,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:49:03,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:49:03,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:49:03,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:49:03,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:49:03,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:49:03,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:49:03,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:49:03,058 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:49:03,093 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:49:03,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:49:03,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:49:03,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:49:03,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:49:03,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:49:03,096 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:49:03,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:49:03,096 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:49:03,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:49:03,097 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:49:03,098 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:49:03,098 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:49:03,098 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:49:03,098 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:49:03,099 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:49:03,099 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:49:03,099 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:49:03,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:49:03,100 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:49:03,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:49:03,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:49:03,101 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:49:03,101 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:49:03,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:49:03,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:49:03,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:49:03,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:49:03,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:49:03,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:49:03,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:49:03,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:49:03,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:49:03,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:49:03,103 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:49:03,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:49:03,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:49:03,104 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:49:03,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:49:03,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:49:03,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:49:03,105 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 08e27279d8b0f092d8b126b1fa68f6a49bc0b5cda6842121ef1790310988da5f [2022-11-22 02:49:03,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:49:03,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:49:03,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:49:03,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:49:03,446 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:49:03,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2022-11-22 02:49:06,485 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:49:06,986 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:49:06,987 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2022-11-22 02:49:07,040 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/data/8ecf0883b/8167501bc33649c3a302909b4c271b3a/FLAGfc0ae6903 [2022-11-22 02:49:07,061 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/data/8ecf0883b/8167501bc33649c3a302909b4c271b3a [2022-11-22 02:49:07,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:49:07,069 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:49:07,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:49:07,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:49:07,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:49:07,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:07" (1/1) ... [2022-11-22 02:49:07,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ced40ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:07, skipping insertion in model container [2022-11-22 02:49:07,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:49:07" (1/1) ... [2022-11-22 02:49:07,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:49:07,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:49:07,582 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14183,14196] [2022-11-22 02:49:07,636 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18907,18920] [2022-11-22 02:49:07,648 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20199,20212] [2022-11-22 02:49:07,655 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20957,20970] [2022-11-22 02:49:07,668 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22620,22633] [2022-11-22 02:49:07,676 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23378,23391] [2022-11-22 02:49:07,685 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24507,24520] [2022-11-22 02:49:07,704 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27132,27145] [2022-11-22 02:49:07,712 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27893,27906] [2022-11-22 02:49:07,721 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29025,29038] [2022-11-22 02:49:07,736 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31116,31129] [2022-11-22 02:49:07,761 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35211,35224] [2022-11-22 02:49:07,769 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35972,35985] [2022-11-22 02:49:07,777 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37065,37078] [2022-11-22 02:49:07,791 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39117,39130] [2022-11-22 02:49:07,820 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42849,42862] [2022-11-22 02:49:07,861 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50027,50040] [2022-11-22 02:49:07,868 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50788,50801] [2022-11-22 02:49:07,875 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51920,51933] [2022-11-22 02:49:07,889 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[54011,54024] [2022-11-22 02:49:07,909 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57572,57585] [2022-11-22 02:49:07,940 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63570,63583] [2022-11-22 02:49:08,414 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:49:08,433 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:49:08,519 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[14183,14196] [2022-11-22 02:49:08,536 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[18907,18920] [2022-11-22 02:49:08,543 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20199,20212] [2022-11-22 02:49:08,548 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[20957,20970] [2022-11-22 02:49:08,557 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[22620,22633] [2022-11-22 02:49:08,562 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[23378,23391] [2022-11-22 02:49:08,568 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[24507,24520] [2022-11-22 02:49:08,580 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27132,27145] [2022-11-22 02:49:08,585 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[27893,27906] [2022-11-22 02:49:08,591 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[29025,29038] [2022-11-22 02:49:08,602 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[31116,31129] [2022-11-22 02:49:08,619 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35211,35224] [2022-11-22 02:49:08,624 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[35972,35985] [2022-11-22 02:49:08,630 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[37065,37078] [2022-11-22 02:49:08,640 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[39117,39130] [2022-11-22 02:49:08,661 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[42849,42862] [2022-11-22 02:49:08,736 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50027,50040] [2022-11-22 02:49:08,740 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[50788,50801] [2022-11-22 02:49:08,746 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[51920,51933] [2022-11-22 02:49:08,756 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[54011,54024] [2022-11-22 02:49:08,775 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[57572,57585] [2022-11-22 02:49:08,808 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_4e442f26-011b-4ddb-be9e-6b3e235e252d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c[63570,63583] [2022-11-22 02:49:09,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:49:09,124 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:49:09,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09 WrapperNode [2022-11-22 02:49:09,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:49:09,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:49:09,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:49:09,126 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:49:09,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,300 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 6593 [2022-11-22 02:49:09,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:49:09,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:49:09,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:49:09,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:49:09,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,339 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,452 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,464 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:49:09,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:49:09,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:49:09,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:49:09,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (1/1) ... [2022-11-22 02:49:09,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:49:09,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:49:09,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:49:09,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:49:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:49:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:49:09,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:49:09,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:49:09,963 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:49:09,968 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:49:12,987 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:49:13,234 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:49:13,235 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:49:13,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:13 BoogieIcfgContainer [2022-11-22 02:49:13,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:49:13,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:49:13,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:49:13,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:49:13,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:49:07" (1/3) ... [2022-11-22 02:49:13,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6078a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:49:13, skipping insertion in model container [2022-11-22 02:49:13,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:49:09" (2/3) ... [2022-11-22 02:49:13,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b6078a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:49:13, skipping insertion in model container [2022-11-22 02:49:13,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:49:13" (3/3) ... [2022-11-22 02:49:13,249 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+lhb-reducer.c [2022-11-22 02:49:13,269 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:49:13,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-11-22 02:49:13,339 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:49:13,346 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;@6019fbc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:49:13,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-22 02:49:13,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 1095 states, 1072 states have (on average 1.8600746268656716) internal successors, (1994), 1094 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:13,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-22 02:49:13,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:13,377 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] [2022-11-22 02:49:13,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:13,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:13,383 INFO L85 PathProgramCache]: Analyzing trace with hash 714056904, now seen corresponding path program 1 times [2022-11-22 02:49:13,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:13,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589862727] [2022-11-22 02:49:13,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:13,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:14,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:14,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589862727] [2022-11-22 02:49:14,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589862727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:14,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:14,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:49:14,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429601164] [2022-11-22 02:49:14,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:14,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:14,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:14,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:14,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:14,214 INFO L87 Difference]: Start difference. First operand has 1095 states, 1072 states have (on average 1.8600746268656716) internal successors, (1994), 1094 states have internal predecessors, (1994), 0 states have call successors, (0), 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 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:15,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:15,187 INFO L93 Difference]: Finished difference Result 1642 states and 2887 transitions. [2022-11-22 02:49:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:49:15,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-11-22 02:49:15,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:15,205 INFO L225 Difference]: With dead ends: 1642 [2022-11-22 02:49:15,205 INFO L226 Difference]: Without dead ends: 849 [2022-11-22 02:49:15,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:49:15,213 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 4340 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 1022 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:15,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 1022 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:49:15,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-22 02:49:15,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2022-11-22 02:49:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 827 states have (on average 1.2962515114873034) internal successors, (1072), 848 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:15,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1072 transitions. [2022-11-22 02:49:15,302 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1072 transitions. Word has length 85 [2022-11-22 02:49:15,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:15,303 INFO L495 AbstractCegarLoop]: Abstraction has 849 states and 1072 transitions. [2022-11-22 02:49:15,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 4 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:15,303 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1072 transitions. [2022-11-22 02:49:15,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 02:49:15,306 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:15,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:15,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:49:15,307 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:15,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:15,307 INFO L85 PathProgramCache]: Analyzing trace with hash -32531416, now seen corresponding path program 1 times [2022-11-22 02:49:15,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:15,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369669440] [2022-11-22 02:49:15,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:15,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:15,567 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:15,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369669440] [2022-11-22 02:49:15,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369669440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:15,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:15,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:49:15,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656239702] [2022-11-22 02:49:15,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:15,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:15,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:15,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:15,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:15,571 INFO L87 Difference]: Start difference. First operand 849 states and 1072 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:16,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:16,353 INFO L93 Difference]: Finished difference Result 1390 states and 1805 transitions. [2022-11-22 02:49:16,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:49:16,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-11-22 02:49:16,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:16,357 INFO L225 Difference]: With dead ends: 1390 [2022-11-22 02:49:16,357 INFO L226 Difference]: Without dead ends: 769 [2022-11-22 02:49:16,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:49:16,360 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 2791 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2791 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:16,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2791 Valid, 495 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:49:16,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-22 02:49:16,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2022-11-22 02:49:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 747 states have (on average 1.3052208835341366) internal successors, (975), 768 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 975 transitions. [2022-11-22 02:49:16,398 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 975 transitions. Word has length 86 [2022-11-22 02:49:16,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:16,399 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 975 transitions. [2022-11-22 02:49:16,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:16,399 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 975 transitions. [2022-11-22 02:49:16,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-22 02:49:16,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:16,402 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] [2022-11-22 02:49:16,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:49:16,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:16,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:16,403 INFO L85 PathProgramCache]: Analyzing trace with hash -618823733, now seen corresponding path program 1 times [2022-11-22 02:49:16,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:16,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421226381] [2022-11-22 02:49:16,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:16,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:16,582 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:16,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421226381] [2022-11-22 02:49:16,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421226381] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:16,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:16,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:49:16,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23848839] [2022-11-22 02:49:16,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:16,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:16,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:16,587 INFO L87 Difference]: Start difference. First operand 769 states and 975 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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) [2022-11-22 02:49:17,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:17,173 INFO L93 Difference]: Finished difference Result 1310 states and 1707 transitions. [2022-11-22 02:49:17,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:49:17,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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 [2022-11-22 02:49:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:17,177 INFO L225 Difference]: With dead ends: 1310 [2022-11-22 02:49:17,177 INFO L226 Difference]: Without dead ends: 693 [2022-11-22 02:49:17,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:49:17,180 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 2580 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:17,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2580 Valid, 501 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:49:17,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-22 02:49:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2022-11-22 02:49:17,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 671 states have (on average 1.3263785394932937) internal successors, (890), 692 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:17,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 890 transitions. [2022-11-22 02:49:17,257 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 890 transitions. Word has length 87 [2022-11-22 02:49:17,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:17,258 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 890 transitions. [2022-11-22 02:49:17,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 4 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) [2022-11-22 02:49:17,259 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 890 transitions. [2022-11-22 02:49:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-22 02:49:17,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:17,261 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] [2022-11-22 02:49:17,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:49:17,262 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1705713825, now seen corresponding path program 1 times [2022-11-22 02:49:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:17,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785102651] [2022-11-22 02:49:17,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:17,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:17,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:17,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:17,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785102651] [2022-11-22 02:49:17,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785102651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:17,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:17,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:49:17,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578400306] [2022-11-22 02:49:17,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:17,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:17,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:17,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:17,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:17,504 INFO L87 Difference]: Start difference. First operand 693 states and 890 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:18,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:18,019 INFO L93 Difference]: Finished difference Result 1234 states and 1621 transitions. [2022-11-22 02:49:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:49:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-11-22 02:49:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:18,022 INFO L225 Difference]: With dead ends: 1234 [2022-11-22 02:49:18,023 INFO L226 Difference]: Without dead ends: 643 [2022-11-22 02:49:18,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:49:18,025 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 2442 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:18,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2442 Valid, 473 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:49:18,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-11-22 02:49:18,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2022-11-22 02:49:18,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 621 states have (on average 1.3446054750402576) internal successors, (835), 642 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 835 transitions. [2022-11-22 02:49:18,067 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 835 transitions. Word has length 88 [2022-11-22 02:49:18,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:18,067 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 835 transitions. [2022-11-22 02:49:18,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:18,068 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 835 transitions. [2022-11-22 02:49:18,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-22 02:49:18,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:18,070 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] [2022-11-22 02:49:18,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:49:18,070 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:18,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:18,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1981491776, now seen corresponding path program 1 times [2022-11-22 02:49:18,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:18,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683036947] [2022-11-22 02:49:18,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:18,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:18,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:18,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683036947] [2022-11-22 02:49:18,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683036947] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:18,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:18,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:49:18,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994336628] [2022-11-22 02:49:18,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:18,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:18,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:18,209 INFO L87 Difference]: Start difference. First operand 643 states and 835 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:19,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:19,002 INFO L93 Difference]: Finished difference Result 1507 states and 1989 transitions. [2022-11-22 02:49:19,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:49:19,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-11-22 02:49:19,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:19,006 INFO L225 Difference]: With dead ends: 1507 [2022-11-22 02:49:19,006 INFO L226 Difference]: Without dead ends: 938 [2022-11-22 02:49:19,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:49:19,008 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 3123 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3123 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:19,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3123 Valid, 705 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:49:19,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-11-22 02:49:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 858. [2022-11-22 02:49:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 836 states have (on average 1.388755980861244) internal successors, (1161), 857 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:19,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1161 transitions. [2022-11-22 02:49:19,070 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1161 transitions. Word has length 89 [2022-11-22 02:49:19,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:19,070 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1161 transitions. [2022-11-22 02:49:19,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1161 transitions. [2022-11-22 02:49:19,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-22 02:49:19,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:19,072 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] [2022-11-22 02:49:19,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:49:19,073 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:19,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:19,073 INFO L85 PathProgramCache]: Analyzing trace with hash -887858356, now seen corresponding path program 1 times [2022-11-22 02:49:19,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:19,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19175323] [2022-11-22 02:49:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:19,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:19,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:19,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19175323] [2022-11-22 02:49:19,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19175323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:19,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:19,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:49:19,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318678499] [2022-11-22 02:49:19,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:19,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:49:19,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:19,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:49:19,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:49:19,252 INFO L87 Difference]: Start difference. First operand 858 states and 1161 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 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) [2022-11-22 02:49:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:19,860 INFO L93 Difference]: Finished difference Result 1642 states and 2247 transitions. [2022-11-22 02:49:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:49:19,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 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 [2022-11-22 02:49:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:19,864 INFO L225 Difference]: With dead ends: 1642 [2022-11-22 02:49:19,865 INFO L226 Difference]: Without dead ends: 850 [2022-11-22 02:49:19,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:49:19,869 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 2274 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:19,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2274 Valid, 433 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:49:19,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-11-22 02:49:19,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 850. [2022-11-22 02:49:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3888888888888888) internal successors, (1150), 849 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:19,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1150 transitions. [2022-11-22 02:49:19,967 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1150 transitions. Word has length 90 [2022-11-22 02:49:19,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:19,968 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1150 transitions. [2022-11-22 02:49:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 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) [2022-11-22 02:49:19,968 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1150 transitions. [2022-11-22 02:49:19,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 02:49:19,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:19,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:19,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:49:19,972 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:19,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1395319451, now seen corresponding path program 1 times [2022-11-22 02:49:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:19,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737845082] [2022-11-22 02:49:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:20,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:20,449 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:20,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737845082] [2022-11-22 02:49:20,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737845082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:20,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:20,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:20,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034125422] [2022-11-22 02:49:20,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:20,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:20,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:20,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:20,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:20,452 INFO L87 Difference]: Start difference. First operand 850 states and 1150 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:21,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:21,985 INFO L93 Difference]: Finished difference Result 1623 states and 2176 transitions. [2022-11-22 02:49:21,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:21,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-22 02:49:21,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:21,991 INFO L225 Difference]: With dead ends: 1623 [2022-11-22 02:49:21,992 INFO L226 Difference]: Without dead ends: 1500 [2022-11-22 02:49:21,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:21,997 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 2310 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2310 SdHoareTripleChecker+Valid, 1998 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:21,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2310 Valid, 1998 Invalid, 1786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 02:49:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-22 02:49:22,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-22 02:49:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3876811594202898) internal successors, (1149), 849 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1149 transitions. [2022-11-22 02:49:22,096 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1149 transitions. Word has length 91 [2022-11-22 02:49:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:22,096 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1149 transitions. [2022-11-22 02:49:22,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:22,102 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1149 transitions. [2022-11-22 02:49:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 02:49:22,104 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:22,105 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] [2022-11-22 02:49:22,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:49:22,105 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:22,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:22,106 INFO L85 PathProgramCache]: Analyzing trace with hash 897316485, now seen corresponding path program 1 times [2022-11-22 02:49:22,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:22,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668329116] [2022-11-22 02:49:22,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:22,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:22,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:22,784 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:22,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668329116] [2022-11-22 02:49:22,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668329116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:22,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:22,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 02:49:22,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183170652] [2022-11-22 02:49:22,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:22,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:49:22,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:49:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:49:22,787 INFO L87 Difference]: Start difference. First operand 850 states and 1149 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:25,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:25,132 INFO L93 Difference]: Finished difference Result 1726 states and 2298 transitions. [2022-11-22 02:49:25,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 02:49:25,133 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-22 02:49:25,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:25,139 INFO L225 Difference]: With dead ends: 1726 [2022-11-22 02:49:25,139 INFO L226 Difference]: Without dead ends: 1594 [2022-11-22 02:49:25,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:49:25,141 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 2496 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 2730 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2496 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:25,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2496 Valid, 3209 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2730 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-22 02:49:25,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2022-11-22 02:49:25,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 859. [2022-11-22 02:49:25,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 837 states have (on average 1.3870967741935485) internal successors, (1161), 858 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:25,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1161 transitions. [2022-11-22 02:49:25,246 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1161 transitions. Word has length 91 [2022-11-22 02:49:25,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:25,247 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1161 transitions. [2022-11-22 02:49:25,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 10 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:25,247 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1161 transitions. [2022-11-22 02:49:25,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 02:49:25,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:25,252 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] [2022-11-22 02:49:25,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:49:25,252 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:25,253 INFO L85 PathProgramCache]: Analyzing trace with hash 488471257, now seen corresponding path program 1 times [2022-11-22 02:49:25,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:25,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288659175] [2022-11-22 02:49:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:25,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:25,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:25,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288659175] [2022-11-22 02:49:25,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288659175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:25,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:25,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:25,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534578975] [2022-11-22 02:49:25,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:25,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:25,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:25,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:25,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:25,731 INFO L87 Difference]: Start difference. First operand 859 states and 1161 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:27,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:27,738 INFO L93 Difference]: Finished difference Result 1491 states and 1992 transitions. [2022-11-22 02:49:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:49:27,739 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-22 02:49:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:27,744 INFO L225 Difference]: With dead ends: 1491 [2022-11-22 02:49:27,744 INFO L226 Difference]: Without dead ends: 1279 [2022-11-22 02:49:27,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:49:27,746 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 2029 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2029 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 2174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:27,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2029 Valid, 2529 Invalid, 2174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-22 02:49:27,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-11-22 02:49:27,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 850. [2022-11-22 02:49:27,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3864734299516908) internal successors, (1148), 849 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1148 transitions. [2022-11-22 02:49:27,859 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1148 transitions. Word has length 91 [2022-11-22 02:49:27,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:27,860 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1148 transitions. [2022-11-22 02:49:27,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 7 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:27,860 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1148 transitions. [2022-11-22 02:49:27,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 02:49:27,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:27,863 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] [2022-11-22 02:49:27,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:49:27,863 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:27,864 INFO L85 PathProgramCache]: Analyzing trace with hash -977341548, now seen corresponding path program 1 times [2022-11-22 02:49:27,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:27,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401657843] [2022-11-22 02:49:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:27,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:28,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:28,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:28,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401657843] [2022-11-22 02:49:28,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401657843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:28,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:28,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:49:28,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489289157] [2022-11-22 02:49:28,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:28,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:49:28,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:28,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:49:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:49:28,348 INFO L87 Difference]: Start difference. First operand 850 states and 1148 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:30,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:30,198 INFO L93 Difference]: Finished difference Result 1646 states and 2207 transitions. [2022-11-22 02:49:30,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:49:30,201 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-22 02:49:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:30,206 INFO L225 Difference]: With dead ends: 1646 [2022-11-22 02:49:30,206 INFO L226 Difference]: Without dead ends: 1492 [2022-11-22 02:49:30,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:49:30,208 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 3547 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3547 SdHoareTripleChecker+Valid, 2727 SdHoareTripleChecker+Invalid, 2262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:30,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3547 Valid, 2727 Invalid, 2262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:49:30,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-11-22 02:49:30,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 850. [2022-11-22 02:49:30,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3840579710144927) internal successors, (1146), 849 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:30,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1146 transitions. [2022-11-22 02:49:30,338 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1146 transitions. Word has length 91 [2022-11-22 02:49:30,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:30,338 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1146 transitions. [2022-11-22 02:49:30,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:30,339 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1146 transitions. [2022-11-22 02:49:30,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-22 02:49:30,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:30,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:30,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:49:30,341 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:30,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:30,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1386186776, now seen corresponding path program 1 times [2022-11-22 02:49:30,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:30,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874210660] [2022-11-22 02:49:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:30,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:30,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:30,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:30,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874210660] [2022-11-22 02:49:30,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874210660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:30,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:30,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:49:30,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894002062] [2022-11-22 02:49:30,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:30,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:49:30,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:30,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:49:30,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:49:30,730 INFO L87 Difference]: Start difference. First operand 850 states and 1146 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:31,912 INFO L93 Difference]: Finished difference Result 1496 states and 1933 transitions. [2022-11-22 02:49:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:49:31,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2022-11-22 02:49:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:31,917 INFO L225 Difference]: With dead ends: 1496 [2022-11-22 02:49:31,918 INFO L226 Difference]: Without dead ends: 1126 [2022-11-22 02:49:31,919 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 [2022-11-22 02:49:31,919 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 3500 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3500 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:31,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3500 Valid, 944 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:49:31,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2022-11-22 02:49:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 850. [2022-11-22 02:49:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3828502415458936) internal successors, (1145), 849 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:32,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1145 transitions. [2022-11-22 02:49:32,062 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1145 transitions. Word has length 91 [2022-11-22 02:49:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:32,063 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1145 transitions. [2022-11-22 02:49:32,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:32,063 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1145 transitions. [2022-11-22 02:49:32,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:32,065 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:32,065 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] [2022-11-22 02:49:32,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:49:32,066 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:32,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:32,066 INFO L85 PathProgramCache]: Analyzing trace with hash 212783759, now seen corresponding path program 1 times [2022-11-22 02:49:32,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:32,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616769987] [2022-11-22 02:49:32,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:32,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:32,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:32,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616769987] [2022-11-22 02:49:32,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616769987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:32,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:32,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:32,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646140194] [2022-11-22 02:49:32,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:32,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:32,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:32,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:32,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:32,523 INFO L87 Difference]: Start difference. First operand 850 states and 1145 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:33,980 INFO L93 Difference]: Finished difference Result 1308 states and 1756 transitions. [2022-11-22 02:49:33,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:49:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:33,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:33,984 INFO L225 Difference]: With dead ends: 1308 [2022-11-22 02:49:33,984 INFO L226 Difference]: Without dead ends: 956 [2022-11-22 02:49:33,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:49:33,986 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1320 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1320 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 1841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:33,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1320 Valid, 2159 Invalid, 1841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 02:49:33,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-11-22 02:49:34,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 850. [2022-11-22 02:49:34,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3804347826086956) internal successors, (1143), 849 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1143 transitions. [2022-11-22 02:49:34,125 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1143 transitions. Word has length 93 [2022-11-22 02:49:34,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:34,126 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1143 transitions. [2022-11-22 02:49:34,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1143 transitions. [2022-11-22 02:49:34,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:34,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:34,128 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] [2022-11-22 02:49:34,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:49:34,129 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:34,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:34,129 INFO L85 PathProgramCache]: Analyzing trace with hash 426483258, now seen corresponding path program 1 times [2022-11-22 02:49:34,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:34,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015100106] [2022-11-22 02:49:34,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:34,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:34,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:34,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:34,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015100106] [2022-11-22 02:49:34,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015100106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:34,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:34,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:34,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662374149] [2022-11-22 02:49:34,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:34,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:34,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:34,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:34,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:34,463 INFO L87 Difference]: Start difference. First operand 850 states and 1143 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:36,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:36,181 INFO L93 Difference]: Finished difference Result 1642 states and 2196 transitions. [2022-11-22 02:49:36,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:36,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:36,188 INFO L225 Difference]: With dead ends: 1642 [2022-11-22 02:49:36,188 INFO L226 Difference]: Without dead ends: 1500 [2022-11-22 02:49:36,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:36,190 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2191 mSDsluCounter, 1563 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:36,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 2049 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 02:49:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-22 02:49:36,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-22 02:49:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3780193236714975) internal successors, (1141), 849 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1141 transitions. [2022-11-22 02:49:36,381 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1141 transitions. Word has length 93 [2022-11-22 02:49:36,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:36,381 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1141 transitions. [2022-11-22 02:49:36,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:36,382 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1141 transitions. [2022-11-22 02:49:36,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:36,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:36,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:49:36,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:49:36,384 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1453025680, now seen corresponding path program 1 times [2022-11-22 02:49:36,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:36,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946136899] [2022-11-22 02:49:36,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:36,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:36,688 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:36,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946136899] [2022-11-22 02:49:36,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946136899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:36,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:36,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:36,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101477144] [2022-11-22 02:49:36,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:36,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:36,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:36,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:36,691 INFO L87 Difference]: Start difference. First operand 850 states and 1141 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:38,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:38,407 INFO L93 Difference]: Finished difference Result 1642 states and 2189 transitions. [2022-11-22 02:49:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:38,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:38,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:38,413 INFO L225 Difference]: With dead ends: 1642 [2022-11-22 02:49:38,413 INFO L226 Difference]: Without dead ends: 1500 [2022-11-22 02:49:38,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:38,414 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2276 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:38,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 2037 Invalid, 1766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 02:49:38,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-22 02:49:38,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-22 02:49:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3756038647342994) internal successors, (1139), 849 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:38,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1139 transitions. [2022-11-22 02:49:38,560 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1139 transitions. Word has length 93 [2022-11-22 02:49:38,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:38,561 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1139 transitions. [2022-11-22 02:49:38,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1139 transitions. [2022-11-22 02:49:38,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:38,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:38,571 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] [2022-11-22 02:49:38,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:49:38,571 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:38,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:38,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1861870908, now seen corresponding path program 1 times [2022-11-22 02:49:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:38,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778333178] [2022-11-22 02:49:38,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:38,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:38,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:38,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:38,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:38,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778333178] [2022-11-22 02:49:38,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778333178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:38,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:38,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:38,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846053031] [2022-11-22 02:49:38,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:38,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:38,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:38,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:38,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:38,875 INFO L87 Difference]: Start difference. First operand 850 states and 1139 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:40,937 INFO L93 Difference]: Finished difference Result 1719 states and 2300 transitions. [2022-11-22 02:49:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:40,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:40,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:40,943 INFO L225 Difference]: With dead ends: 1719 [2022-11-22 02:49:40,943 INFO L226 Difference]: Without dead ends: 1523 [2022-11-22 02:49:40,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:40,945 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 2674 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 2877 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:40,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 2877 Invalid, 2372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:49:40,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-22 02:49:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 850. [2022-11-22 02:49:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3731884057971016) internal successors, (1137), 849 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:41,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1137 transitions. [2022-11-22 02:49:41,103 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1137 transitions. Word has length 93 [2022-11-22 02:49:41,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:41,103 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1137 transitions. [2022-11-22 02:49:41,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1137 transitions. [2022-11-22 02:49:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:41,106 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:41,106 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] [2022-11-22 02:49:41,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:49:41,106 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:41,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:41,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1321108389, now seen corresponding path program 1 times [2022-11-22 02:49:41,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:41,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372426808] [2022-11-22 02:49:41,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:41,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:41,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:41,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:41,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372426808] [2022-11-22 02:49:41,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372426808] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:41,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:41,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:41,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522415068] [2022-11-22 02:49:41,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:41,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:41,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:41,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:41,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:41,410 INFO L87 Difference]: Start difference. First operand 850 states and 1137 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:43,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:43,044 INFO L93 Difference]: Finished difference Result 1632 states and 2169 transitions. [2022-11-22 02:49:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:43,045 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:43,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:43,050 INFO L225 Difference]: With dead ends: 1632 [2022-11-22 02:49:43,050 INFO L226 Difference]: Without dead ends: 1500 [2022-11-22 02:49:43,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:43,052 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 3467 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3467 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:43,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3467 Valid, 2101 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:49:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-22 02:49:43,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-22 02:49:43,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3719806763285025) internal successors, (1136), 849 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:43,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1136 transitions. [2022-11-22 02:49:43,259 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1136 transitions. Word has length 93 [2022-11-22 02:49:43,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:43,260 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1136 transitions. [2022-11-22 02:49:43,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:43,260 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1136 transitions. [2022-11-22 02:49:43,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:43,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:43,262 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] [2022-11-22 02:49:43,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:49:43,263 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:43,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:43,263 INFO L85 PathProgramCache]: Analyzing trace with hash 912263161, now seen corresponding path program 1 times [2022-11-22 02:49:43,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:43,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511933678] [2022-11-22 02:49:43,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:43,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:43,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:43,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:43,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511933678] [2022-11-22 02:49:43,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511933678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:43,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:43,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:43,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918018422] [2022-11-22 02:49:43,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:43,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:43,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:43,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:43,544 INFO L87 Difference]: Start difference. First operand 850 states and 1136 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:45,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:45,412 INFO L93 Difference]: Finished difference Result 1685 states and 2248 transitions. [2022-11-22 02:49:45,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:45,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:45,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:45,420 INFO L225 Difference]: With dead ends: 1685 [2022-11-22 02:49:45,420 INFO L226 Difference]: Without dead ends: 1523 [2022-11-22 02:49:45,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:45,421 INFO L413 NwaCegarLoop]: 700 mSDtfsCounter, 2799 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2799 SdHoareTripleChecker+Valid, 2734 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:45,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2799 Valid, 2734 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:49:45,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-22 02:49:45,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 850. [2022-11-22 02:49:45,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3707729468599035) internal successors, (1135), 849 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:45,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1135 transitions. [2022-11-22 02:49:45,587 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1135 transitions. Word has length 93 [2022-11-22 02:49:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:45,587 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1135 transitions. [2022-11-22 02:49:45,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:45,587 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1135 transitions. [2022-11-22 02:49:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:45,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:45,590 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] [2022-11-22 02:49:45,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:49:45,590 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:45,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:45,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1094349969, now seen corresponding path program 1 times [2022-11-22 02:49:45,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:45,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213856453] [2022-11-22 02:49:45,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:45,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:45,867 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:45,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213856453] [2022-11-22 02:49:45,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213856453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:45,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:45,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772509747] [2022-11-22 02:49:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:45,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:45,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:45,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:45,869 INFO L87 Difference]: Start difference. First operand 850 states and 1135 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:47,733 INFO L93 Difference]: Finished difference Result 1623 states and 2158 transitions. [2022-11-22 02:49:47,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:47,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:47,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:47,740 INFO L225 Difference]: With dead ends: 1623 [2022-11-22 02:49:47,740 INFO L226 Difference]: Without dead ends: 1500 [2022-11-22 02:49:47,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:47,742 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 2004 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2004 SdHoareTripleChecker+Valid, 2428 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:47,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2004 Valid, 2428 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:49:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-22 02:49:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-22 02:49:47,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3695652173913044) internal successors, (1134), 849 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:47,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1134 transitions. [2022-11-22 02:49:47,890 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1134 transitions. Word has length 93 [2022-11-22 02:49:47,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:47,890 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1134 transitions. [2022-11-22 02:49:47,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:47,891 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1134 transitions. [2022-11-22 02:49:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:47,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:47,893 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] [2022-11-22 02:49:47,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:49:47,893 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:47,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:47,894 INFO L85 PathProgramCache]: Analyzing trace with hash -742152744, now seen corresponding path program 1 times [2022-11-22 02:49:47,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:47,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060324376] [2022-11-22 02:49:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:48,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:48,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:48,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060324376] [2022-11-22 02:49:48,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060324376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:48,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:48,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:48,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48397455] [2022-11-22 02:49:48,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:48,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:48,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:48,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:48,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:48,223 INFO L87 Difference]: Start difference. First operand 850 states and 1134 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:50,328 INFO L93 Difference]: Finished difference Result 1671 states and 2230 transitions. [2022-11-22 02:49:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:49:50,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:50,335 INFO L225 Difference]: With dead ends: 1671 [2022-11-22 02:49:50,336 INFO L226 Difference]: Without dead ends: 1523 [2022-11-22 02:49:50,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:49:50,337 INFO L413 NwaCegarLoop]: 786 mSDtfsCounter, 2797 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 2380 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2797 SdHoareTripleChecker+Valid, 3368 SdHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:50,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2797 Valid, 3368 Invalid, 2384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2380 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:49:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-22 02:49:50,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 850. [2022-11-22 02:49:50,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3683574879227054) internal successors, (1133), 849 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:50,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1133 transitions. [2022-11-22 02:49:50,503 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1133 transitions. Word has length 93 [2022-11-22 02:49:50,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:50,503 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1133 transitions. [2022-11-22 02:49:50,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:50,503 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1133 transitions. [2022-11-22 02:49:50,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:49:50,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:50,506 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] [2022-11-22 02:49:50,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:49:50,507 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:50,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:50,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1210703433, now seen corresponding path program 1 times [2022-11-22 02:49:50,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:50,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368608317] [2022-11-22 02:49:50,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:50,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:50,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:50,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:50,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368608317] [2022-11-22 02:49:50,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368608317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:50,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:50,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:50,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931916780] [2022-11-22 02:49:50,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:50,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:50,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:50,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:50,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:50,803 INFO L87 Difference]: Start difference. First operand 850 states and 1133 transitions. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:52,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:52,806 INFO L93 Difference]: Finished difference Result 1618 states and 2151 transitions. [2022-11-22 02:49:52,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:52,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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 [2022-11-22 02:49:52,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:52,811 INFO L225 Difference]: With dead ends: 1618 [2022-11-22 02:49:52,811 INFO L226 Difference]: Without dead ends: 1500 [2022-11-22 02:49:52,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:52,813 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 2862 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2862 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 2148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:52,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2862 Valid, 2552 Invalid, 2148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:49:52,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-22 02:49:52,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-22 02:49:52,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3671497584541064) internal successors, (1132), 849 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1132 transitions. [2022-11-22 02:49:52,966 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1132 transitions. Word has length 93 [2022-11-22 02:49:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:52,967 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1132 transitions. [2022-11-22 02:49:52,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 7 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) [2022-11-22 02:49:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1132 transitions. [2022-11-22 02:49:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:49:52,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:52,969 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] [2022-11-22 02:49:52,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 02:49:52,970 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:52,970 INFO L85 PathProgramCache]: Analyzing trace with hash 428439914, now seen corresponding path program 1 times [2022-11-22 02:49:52,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:52,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371495995] [2022-11-22 02:49:52,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:52,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:53,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371495995] [2022-11-22 02:49:53,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371495995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:53,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:53,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:53,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309853792] [2022-11-22 02:49:53,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:53,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:53,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:53,306 INFO L87 Difference]: Start difference. First operand 850 states and 1132 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:49:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:55,408 INFO L93 Difference]: Finished difference Result 1596 states and 2112 transitions. [2022-11-22 02:49:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:49:55,409 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:49:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:55,414 INFO L225 Difference]: With dead ends: 1596 [2022-11-22 02:49:55,414 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:49:55,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:49:55,416 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 2565 mSDsluCounter, 2444 mSDsCounter, 0 mSdLazyCounter, 2440 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2565 SdHoareTripleChecker+Valid, 3163 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:55,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2565 Valid, 3163 Invalid, 2444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2440 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:49:55,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:49:55,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:49:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3647342995169083) internal successors, (1130), 849 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1130 transitions. [2022-11-22 02:49:55,647 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1130 transitions. Word has length 95 [2022-11-22 02:49:55,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:55,647 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1130 transitions. [2022-11-22 02:49:55,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:49:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1130 transitions. [2022-11-22 02:49:55,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:49:55,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:55,650 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] [2022-11-22 02:49:55,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 02:49:55,651 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash -403449268, now seen corresponding path program 1 times [2022-11-22 02:49:55,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:55,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367114809] [2022-11-22 02:49:55,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:55,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:56,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367114809] [2022-11-22 02:49:56,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367114809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:56,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:56,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:56,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709443013] [2022-11-22 02:49:56,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:56,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:56,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:56,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:56,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:56,037 INFO L87 Difference]: Start difference. First operand 850 states and 1130 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:49:57,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:49:57,933 INFO L93 Difference]: Finished difference Result 1662 states and 2200 transitions. [2022-11-22 02:49:57,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:49:57,933 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:49:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:49:57,938 INFO L225 Difference]: With dead ends: 1662 [2022-11-22 02:49:57,938 INFO L226 Difference]: Without dead ends: 1500 [2022-11-22 02:49:57,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:49:57,940 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 3105 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:49:57,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3105 Valid, 2464 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-22 02:49:57,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-11-22 02:49:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 850. [2022-11-22 02:49:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3623188405797102) internal successors, (1128), 849 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:49:58,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1128 transitions. [2022-11-22 02:49:58,100 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1128 transitions. Word has length 95 [2022-11-22 02:49:58,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:49:58,100 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1128 transitions. [2022-11-22 02:49:58,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:49:58,101 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1128 transitions. [2022-11-22 02:49:58,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:49:58,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:49:58,103 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] [2022-11-22 02:49:58,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 02:49:58,103 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:49:58,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:49:58,104 INFO L85 PathProgramCache]: Analyzing trace with hash 13593460, now seen corresponding path program 1 times [2022-11-22 02:49:58,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:49:58,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073194409] [2022-11-22 02:49:58,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:49:58,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:49:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:49:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:49:58,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:49:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073194409] [2022-11-22 02:49:58,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073194409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:49:58,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:49:58,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:49:58,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970503574] [2022-11-22 02:49:58,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:49:58,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:49:58,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:49:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:49:58,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:49:58,381 INFO L87 Difference]: Start difference. First operand 850 states and 1128 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:00,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:00,447 INFO L93 Difference]: Finished difference Result 1751 states and 2321 transitions. [2022-11-22 02:50:00,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:50:00,447 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:00,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:00,462 INFO L225 Difference]: With dead ends: 1751 [2022-11-22 02:50:00,463 INFO L226 Difference]: Without dead ends: 1523 [2022-11-22 02:50:00,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:50:00,464 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 2685 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2685 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 2249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:00,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2685 Valid, 2750 Invalid, 2249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2245 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:50:00,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2022-11-22 02:50:00,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 850. [2022-11-22 02:50:00,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3599033816425121) internal successors, (1126), 849 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:00,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1126 transitions. [2022-11-22 02:50:00,636 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1126 transitions. Word has length 95 [2022-11-22 02:50:00,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:00,637 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1126 transitions. [2022-11-22 02:50:00,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:00,637 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1126 transitions. [2022-11-22 02:50:00,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:00,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:00,639 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] [2022-11-22 02:50:00,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 02:50:00,639 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:00,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1322444417, now seen corresponding path program 1 times [2022-11-22 02:50:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:00,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362673939] [2022-11-22 02:50:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:00,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:00,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:00,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362673939] [2022-11-22 02:50:00,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362673939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:00,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:00,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:00,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285274589] [2022-11-22 02:50:00,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:00,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:00,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:00,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:00,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:00,927 INFO L87 Difference]: Start difference. First operand 850 states and 1126 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:03,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:03,018 INFO L93 Difference]: Finished difference Result 1592 states and 2100 transitions. [2022-11-22 02:50:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:50:03,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:03,021 INFO L225 Difference]: With dead ends: 1592 [2022-11-22 02:50:03,021 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:03,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:50:03,023 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 2619 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2619 SdHoareTripleChecker+Valid, 2735 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:03,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2619 Valid, 2735 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2259 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:50:03,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:03,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:03,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.357487922705314) internal successors, (1124), 849 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:03,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1124 transitions. [2022-11-22 02:50:03,205 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1124 transitions. Word has length 95 [2022-11-22 02:50:03,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:03,205 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1124 transitions. [2022-11-22 02:50:03,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1124 transitions. [2022-11-22 02:50:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:03,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:03,207 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] [2022-11-22 02:50:03,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 02:50:03,207 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:03,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:03,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1959236716, now seen corresponding path program 1 times [2022-11-22 02:50:03,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:03,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671397399] [2022-11-22 02:50:03,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:03,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:03,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:03,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:03,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671397399] [2022-11-22 02:50:03,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671397399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:03,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:03,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877610836] [2022-11-22 02:50:03,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:03,571 INFO L87 Difference]: Start difference. First operand 850 states and 1124 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:05,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:05,735 INFO L93 Difference]: Finished difference Result 1590 states and 2095 transitions. [2022-11-22 02:50:05,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:05,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:05,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:05,738 INFO L225 Difference]: With dead ends: 1590 [2022-11-22 02:50:05,738 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:05,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:05,739 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2546 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:05,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 3305 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:50:05,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:05,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.355072463768116) internal successors, (1122), 849 states have internal predecessors, (1122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1122 transitions. [2022-11-22 02:50:05,909 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1122 transitions. Word has length 95 [2022-11-22 02:50:05,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:05,909 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1122 transitions. [2022-11-22 02:50:05,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1122 transitions. [2022-11-22 02:50:05,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:05,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:05,911 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] [2022-11-22 02:50:05,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 02:50:05,911 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:05,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:05,912 INFO L85 PathProgramCache]: Analyzing trace with hash 954342242, now seen corresponding path program 1 times [2022-11-22 02:50:05,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:05,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275459707] [2022-11-22 02:50:05,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:05,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:06,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:06,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275459707] [2022-11-22 02:50:06,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275459707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:06,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:06,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:06,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257024047] [2022-11-22 02:50:06,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:06,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:06,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:06,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:06,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:06,261 INFO L87 Difference]: Start difference. First operand 850 states and 1122 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:08,511 INFO L93 Difference]: Finished difference Result 1592 states and 2094 transitions. [2022-11-22 02:50:08,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:08,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:08,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:08,515 INFO L225 Difference]: With dead ends: 1592 [2022-11-22 02:50:08,515 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:08,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:08,516 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 2545 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 3303 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:08,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 3303 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2470 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:50:08,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:08,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:08,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3526570048309179) internal successors, (1120), 849 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:08,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1120 transitions. [2022-11-22 02:50:08,728 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1120 transitions. Word has length 95 [2022-11-22 02:50:08,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:08,728 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1120 transitions. [2022-11-22 02:50:08,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:08,729 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1120 transitions. [2022-11-22 02:50:08,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:08,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:08,731 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] [2022-11-22 02:50:08,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 02:50:08,731 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:08,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash -277492777, now seen corresponding path program 1 times [2022-11-22 02:50:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:08,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554130421] [2022-11-22 02:50:08,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:08,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:09,056 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:09,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554130421] [2022-11-22 02:50:09,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554130421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:09,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:09,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:09,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617051179] [2022-11-22 02:50:09,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:09,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:09,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:09,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:09,058 INFO L87 Difference]: Start difference. First operand 850 states and 1120 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:11,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:11,323 INFO L93 Difference]: Finished difference Result 1586 states and 2084 transitions. [2022-11-22 02:50:11,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:11,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:11,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:11,327 INFO L225 Difference]: With dead ends: 1586 [2022-11-22 02:50:11,327 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:11,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:11,328 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 2542 mSDsluCounter, 2577 mSDsCounter, 0 mSdLazyCounter, 2538 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 3371 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:11,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 3371 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2538 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:50:11,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:11,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3514492753623188) internal successors, (1119), 849 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1119 transitions. [2022-11-22 02:50:11,523 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1119 transitions. Word has length 95 [2022-11-22 02:50:11,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:11,523 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1119 transitions. [2022-11-22 02:50:11,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:11,524 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1119 transitions. [2022-11-22 02:50:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:11,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:11,525 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] [2022-11-22 02:50:11,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-22 02:50:11,525 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:11,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash 90609398, now seen corresponding path program 1 times [2022-11-22 02:50:11,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:11,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540691648] [2022-11-22 02:50:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:11,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:11,794 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:11,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540691648] [2022-11-22 02:50:11,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540691648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:11,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:11,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:11,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22512497] [2022-11-22 02:50:11,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:11,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:11,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:11,796 INFO L87 Difference]: Start difference. First operand 850 states and 1119 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:13,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:13,978 INFO L93 Difference]: Finished difference Result 1586 states and 2083 transitions. [2022-11-22 02:50:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:50:13,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:13,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:13,982 INFO L225 Difference]: With dead ends: 1586 [2022-11-22 02:50:13,982 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:13,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:50:13,983 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 2608 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 2243 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2608 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:13,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2608 Valid, 2731 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2243 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:50:13,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:14,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:14,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3502415458937198) internal successors, (1118), 849 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:14,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1118 transitions. [2022-11-22 02:50:14,174 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1118 transitions. Word has length 95 [2022-11-22 02:50:14,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:14,174 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1118 transitions. [2022-11-22 02:50:14,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1118 transitions. [2022-11-22 02:50:14,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:14,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:14,176 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:50:14,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-22 02:50:14,176 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:14,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:14,176 INFO L85 PathProgramCache]: Analyzing trace with hash 726921085, now seen corresponding path program 1 times [2022-11-22 02:50:14,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:14,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693207119] [2022-11-22 02:50:14,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:14,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:14,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:14,482 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:14,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693207119] [2022-11-22 02:50:14,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693207119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:14,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:14,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:14,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690717928] [2022-11-22 02:50:14,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:14,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:14,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:14,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:14,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:14,485 INFO L87 Difference]: Start difference. First operand 850 states and 1118 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:16,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:16,753 INFO L93 Difference]: Finished difference Result 1582 states and 2077 transitions. [2022-11-22 02:50:16,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:16,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:16,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:16,756 INFO L225 Difference]: With dead ends: 1582 [2022-11-22 02:50:16,756 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:16,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:16,757 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 2525 mSDsluCounter, 2546 mSDsCounter, 0 mSdLazyCounter, 2457 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 3309 SdHoareTripleChecker+Invalid, 2461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:16,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 3309 Invalid, 2461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2457 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:50:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:16,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:16,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3490338164251208) internal successors, (1117), 849 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:16,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1117 transitions. [2022-11-22 02:50:16,965 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1117 transitions. Word has length 95 [2022-11-22 02:50:16,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:16,965 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1117 transitions. [2022-11-22 02:50:16,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:16,965 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1117 transitions. [2022-11-22 02:50:16,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:16,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:16,966 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] [2022-11-22 02:50:16,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-22 02:50:16,966 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:16,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash -733177260, now seen corresponding path program 1 times [2022-11-22 02:50:16,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:16,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297727146] [2022-11-22 02:50:16,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:16,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:17,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:17,259 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:17,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297727146] [2022-11-22 02:50:17,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297727146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:17,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:17,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:17,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594770270] [2022-11-22 02:50:17,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:17,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:17,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:17,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:17,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:17,262 INFO L87 Difference]: Start difference. First operand 850 states and 1117 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:19,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:19,576 INFO L93 Difference]: Finished difference Result 1582 states and 2076 transitions. [2022-11-22 02:50:19,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:19,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:19,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:19,579 INFO L225 Difference]: With dead ends: 1582 [2022-11-22 02:50:19,579 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:19,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:19,581 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 2529 mSDsluCounter, 2593 mSDsCounter, 0 mSdLazyCounter, 2521 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2529 SdHoareTripleChecker+Valid, 3390 SdHoareTripleChecker+Invalid, 2524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:19,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2529 Valid, 3390 Invalid, 2524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2521 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:50:19,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:19,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:19,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3478260869565217) internal successors, (1116), 849 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1116 transitions. [2022-11-22 02:50:19,792 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1116 transitions. Word has length 95 [2022-11-22 02:50:19,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:19,793 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1116 transitions. [2022-11-22 02:50:19,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:19,793 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1116 transitions. [2022-11-22 02:50:19,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:19,793 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:19,794 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] [2022-11-22 02:50:19,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-22 02:50:19,794 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:19,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:19,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1369271480, now seen corresponding path program 1 times [2022-11-22 02:50:19,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:19,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111417589] [2022-11-22 02:50:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:19,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:20,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:20,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111417589] [2022-11-22 02:50:20,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111417589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:20,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:20,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:20,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361022238] [2022-11-22 02:50:20,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:20,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:20,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:20,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:20,057 INFO L87 Difference]: Start difference. First operand 850 states and 1116 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:22,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:22,305 INFO L93 Difference]: Finished difference Result 1586 states and 2078 transitions. [2022-11-22 02:50:22,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:50:22,306 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:22,308 INFO L225 Difference]: With dead ends: 1586 [2022-11-22 02:50:22,308 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:22,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:50:22,311 INFO L413 NwaCegarLoop]: 688 mSDtfsCounter, 2519 mSDsluCounter, 2117 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2519 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 2313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:22,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2519 Valid, 2805 Invalid, 2313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:50:22,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:22,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3466183574879227) internal successors, (1115), 849 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:22,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1115 transitions. [2022-11-22 02:50:22,498 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1115 transitions. Word has length 95 [2022-11-22 02:50:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:22,498 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1115 transitions. [2022-11-22 02:50:22,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:22,499 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1115 transitions. [2022-11-22 02:50:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:22,499 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:22,499 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] [2022-11-22 02:50:22,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-22 02:50:22,500 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:22,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:22,500 INFO L85 PathProgramCache]: Analyzing trace with hash -532293800, now seen corresponding path program 1 times [2022-11-22 02:50:22,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:22,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43894180] [2022-11-22 02:50:22,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:22,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:22,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:22,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:22,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43894180] [2022-11-22 02:50:22,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43894180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:22,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:22,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:22,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182891212] [2022-11-22 02:50:22,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:22,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:22,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:22,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:22,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:22,763 INFO L87 Difference]: Start difference. First operand 850 states and 1115 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:25,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:25,051 INFO L93 Difference]: Finished difference Result 1582 states and 2073 transitions. [2022-11-22 02:50:25,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:50:25,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:25,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:25,054 INFO L225 Difference]: With dead ends: 1582 [2022-11-22 02:50:25,054 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:25,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:50:25,055 INFO L413 NwaCegarLoop]: 670 mSDtfsCounter, 1797 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 2731 SdHoareTripleChecker+Invalid, 2223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:25,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 2731 Invalid, 2223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:50:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3454106280193237) internal successors, (1114), 849 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:25,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1114 transitions. [2022-11-22 02:50:25,249 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1114 transitions. Word has length 95 [2022-11-22 02:50:25,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:25,249 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1114 transitions. [2022-11-22 02:50:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:25,250 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1114 transitions. [2022-11-22 02:50:25,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:50:25,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:25,251 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] [2022-11-22 02:50:25,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-22 02:50:25,252 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:25,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:25,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1192103022, now seen corresponding path program 1 times [2022-11-22 02:50:25,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:25,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409533578] [2022-11-22 02:50:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:25,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:25,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:25,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:25,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409533578] [2022-11-22 02:50:25,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409533578] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:25,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:25,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:25,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755029097] [2022-11-22 02:50:25,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:25,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:25,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:25,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:25,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:25,548 INFO L87 Difference]: Start difference. First operand 850 states and 1114 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:27,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:27,865 INFO L93 Difference]: Finished difference Result 1581 states and 2070 transitions. [2022-11-22 02:50:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:27,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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 [2022-11-22 02:50:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:27,868 INFO L225 Difference]: With dead ends: 1581 [2022-11-22 02:50:27,868 INFO L226 Difference]: Without dead ends: 1476 [2022-11-22 02:50:27,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:27,870 INFO L413 NwaCegarLoop]: 713 mSDtfsCounter, 2705 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2705 SdHoareTripleChecker+Valid, 3174 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:27,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2705 Valid, 3174 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:50:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2022-11-22 02:50:28,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 850. [2022-11-22 02:50:28,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 828 states have (on average 1.3442028985507246) internal successors, (1113), 849 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1113 transitions. [2022-11-22 02:50:28,202 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1113 transitions. Word has length 95 [2022-11-22 02:50:28,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:28,202 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1113 transitions. [2022-11-22 02:50:28,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 7 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) [2022-11-22 02:50:28,202 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1113 transitions. [2022-11-22 02:50:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-22 02:50:28,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:28,204 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] [2022-11-22 02:50:28,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-22 02:50:28,204 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:28,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash 577481844, now seen corresponding path program 1 times [2022-11-22 02:50:28,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:28,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789326928] [2022-11-22 02:50:28,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:28,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:29,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:29,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:29,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789326928] [2022-11-22 02:50:29,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789326928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:29,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:29,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:50:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119312827] [2022-11-22 02:50:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:29,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:50:29,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:50:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:50:29,175 INFO L87 Difference]: Start difference. First operand 850 states and 1113 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 13 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) [2022-11-22 02:50:33,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:33,463 INFO L93 Difference]: Finished difference Result 2244 states and 2761 transitions. [2022-11-22 02:50:33,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-22 02:50:33,463 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 13 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 [2022-11-22 02:50:33,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:33,466 INFO L225 Difference]: With dead ends: 2244 [2022-11-22 02:50:33,466 INFO L226 Difference]: Without dead ends: 1934 [2022-11-22 02:50:33,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=305, Invalid=885, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:50:33,467 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 6137 mSDsluCounter, 4059 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6137 SdHoareTripleChecker+Valid, 4897 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:33,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6137 Valid, 4897 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:50:33,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1934 states. [2022-11-22 02:50:33,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1934 to 638. [2022-11-22 02:50:33,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.332797427652733) internal successors, (829), 637 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:33,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 829 transitions. [2022-11-22 02:50:33,689 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 829 transitions. Word has length 96 [2022-11-22 02:50:33,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:33,689 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 829 transitions. [2022-11-22 02:50:33,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 13 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) [2022-11-22 02:50:33,689 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 829 transitions. [2022-11-22 02:50:33,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:50:33,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:33,690 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:50:33,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-22 02:50:33,690 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:33,691 INFO L85 PathProgramCache]: Analyzing trace with hash -2114920515, now seen corresponding path program 1 times [2022-11-22 02:50:33,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:33,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934677265] [2022-11-22 02:50:33,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:33,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:33,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:33,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934677265] [2022-11-22 02:50:33,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934677265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:33,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:33,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034919583] [2022-11-22 02:50:34,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:34,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:34,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:34,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:34,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:34,001 INFO L87 Difference]: Start difference. First operand 638 states and 829 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:35,927 INFO L93 Difference]: Finished difference Result 1230 states and 1591 transitions. [2022-11-22 02:50:35,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:35,928 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:50:35,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:35,930 INFO L225 Difference]: With dead ends: 1230 [2022-11-22 02:50:35,930 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:50:35,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:35,930 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1649 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:35,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1649 Valid, 1727 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:50:35,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:50:36,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 638. [2022-11-22 02:50:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3295819935691318) internal successors, (827), 637 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:36,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 827 transitions. [2022-11-22 02:50:36,213 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 827 transitions. Word has length 97 [2022-11-22 02:50:36,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:36,214 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 827 transitions. [2022-11-22 02:50:36,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 827 transitions. [2022-11-22 02:50:36,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:50:36,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:36,215 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, 1] [2022-11-22 02:50:36,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-22 02:50:36,215 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:36,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:36,216 INFO L85 PathProgramCache]: Analyzing trace with hash -202723413, now seen corresponding path program 1 times [2022-11-22 02:50:36,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:36,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089206690] [2022-11-22 02:50:36,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:36,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:36,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:36,494 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:36,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089206690] [2022-11-22 02:50:36,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089206690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:36,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:36,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:36,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427559119] [2022-11-22 02:50:36,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:36,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:36,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:36,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:36,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:36,497 INFO L87 Difference]: Start difference. First operand 638 states and 827 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:38,488 INFO L93 Difference]: Finished difference Result 1278 states and 1662 transitions. [2022-11-22 02:50:38,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:50:38,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:50:38,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:38,493 INFO L225 Difference]: With dead ends: 1278 [2022-11-22 02:50:38,493 INFO L226 Difference]: Without dead ends: 1156 [2022-11-22 02:50:38,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:50:38,495 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1172 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 1395 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1172 SdHoareTripleChecker+Valid, 1744 SdHoareTripleChecker+Invalid, 1399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:38,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1172 Valid, 1744 Invalid, 1399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1395 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:50:38,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2022-11-22 02:50:38,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 638. [2022-11-22 02:50:38,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3263665594855305) internal successors, (825), 637 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 825 transitions. [2022-11-22 02:50:38,857 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 825 transitions. Word has length 97 [2022-11-22 02:50:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:38,858 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 825 transitions. [2022-11-22 02:50:38,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:38,858 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 825 transitions. [2022-11-22 02:50:38,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:50:38,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:38,859 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, 1] [2022-11-22 02:50:38,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-22 02:50:38,860 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:38,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:38,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1604074859, now seen corresponding path program 1 times [2022-11-22 02:50:38,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:38,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096394600] [2022-11-22 02:50:38,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:38,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:39,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:39,171 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:39,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096394600] [2022-11-22 02:50:39,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096394600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:39,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:39,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:39,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980905535] [2022-11-22 02:50:39,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:39,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:39,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:39,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:39,174 INFO L87 Difference]: Start difference. First operand 638 states and 825 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:41,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:41,197 INFO L93 Difference]: Finished difference Result 1226 states and 1582 transitions. [2022-11-22 02:50:41,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:41,199 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:50:41,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:41,200 INFO L225 Difference]: With dead ends: 1226 [2022-11-22 02:50:41,200 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:50:41,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:41,202 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 1650 mSDsluCounter, 1435 mSDsCounter, 0 mSdLazyCounter, 1477 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:41,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 1846 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1477 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:50:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:50:41,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 638. [2022-11-22 02:50:41,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.3231511254019293) internal successors, (823), 637 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 823 transitions. [2022-11-22 02:50:41,437 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 823 transitions. Word has length 97 [2022-11-22 02:50:41,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:41,437 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 823 transitions. [2022-11-22 02:50:41,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:41,437 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 823 transitions. [2022-11-22 02:50:41,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:50:41,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:41,439 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, 1] [2022-11-22 02:50:41,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-22 02:50:41,439 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:41,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:41,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1424910206, now seen corresponding path program 1 times [2022-11-22 02:50:41,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:41,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517334384] [2022-11-22 02:50:41,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:41,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:41,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:41,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:41,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517334384] [2022-11-22 02:50:41,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517334384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:41,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:41,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 02:50:41,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432505428] [2022-11-22 02:50:41,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:41,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:50:41,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:41,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:50:41,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:50:41,896 INFO L87 Difference]: Start difference. First operand 638 states and 823 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:45,567 INFO L93 Difference]: Finished difference Result 1732 states and 2250 transitions. [2022-11-22 02:50:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 02:50:45,567 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:50:45,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:45,569 INFO L225 Difference]: With dead ends: 1732 [2022-11-22 02:50:45,569 INFO L226 Difference]: Without dead ends: 1626 [2022-11-22 02:50:45,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:50:45,571 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 3741 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 1864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:45,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 1929 Invalid, 1864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:50:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2022-11-22 02:50:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 646. [2022-11-22 02:50:45,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.319047619047619) internal successors, (831), 645 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:45,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 831 transitions. [2022-11-22 02:50:45,910 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 831 transitions. Word has length 97 [2022-11-22 02:50:45,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:45,910 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 831 transitions. [2022-11-22 02:50:45,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:45,910 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 831 transitions. [2022-11-22 02:50:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:50:45,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:45,912 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, 1] [2022-11-22 02:50:45,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-22 02:50:45,912 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:45,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:45,930 INFO L85 PathProgramCache]: Analyzing trace with hash -183952075, now seen corresponding path program 1 times [2022-11-22 02:50:45,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:45,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556101370] [2022-11-22 02:50:45,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:45,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:46,216 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:46,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556101370] [2022-11-22 02:50:46,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556101370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:46,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:46,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833704376] [2022-11-22 02:50:46,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:46,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:46,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:46,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:46,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:46,218 INFO L87 Difference]: Start difference. First operand 646 states and 831 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:48,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:48,343 INFO L93 Difference]: Finished difference Result 1230 states and 1583 transitions. [2022-11-22 02:50:48,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:48,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:50:48,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:48,345 INFO L225 Difference]: With dead ends: 1230 [2022-11-22 02:50:48,345 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:50:48,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:48,346 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1638 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 1765 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:48,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 1765 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1379 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:50:48,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:50:48,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 646. [2022-11-22 02:50:48,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.3158730158730159) internal successors, (829), 645 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:48,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 829 transitions. [2022-11-22 02:50:48,623 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 829 transitions. Word has length 97 [2022-11-22 02:50:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:48,624 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 829 transitions. [2022-11-22 02:50:48,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 829 transitions. [2022-11-22 02:50:48,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:50:48,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:48,625 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:50:48,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-22 02:50:48,626 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:48,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:48,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1728245027, now seen corresponding path program 1 times [2022-11-22 02:50:48,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:48,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070144247] [2022-11-22 02:50:48,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:48,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:48,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:48,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:48,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070144247] [2022-11-22 02:50:48,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070144247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:48,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:48,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:48,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634192027] [2022-11-22 02:50:48,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:48,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:48,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:48,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:48,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:48,927 INFO L87 Difference]: Start difference. First operand 646 states and 829 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:51,431 INFO L93 Difference]: Finished difference Result 1286 states and 1662 transitions. [2022-11-22 02:50:51,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:51,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:50:51,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:51,433 INFO L225 Difference]: With dead ends: 1286 [2022-11-22 02:50:51,433 INFO L226 Difference]: Without dead ends: 1164 [2022-11-22 02:50:51,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:51,434 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 1609 mSDsluCounter, 1691 mSDsCounter, 0 mSdLazyCounter, 1596 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 2214 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:51,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 2214 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1596 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:50:51,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2022-11-22 02:50:51,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 646. [2022-11-22 02:50:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.3126984126984127) internal successors, (827), 645 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:51,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 827 transitions. [2022-11-22 02:50:51,743 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 827 transitions. Word has length 97 [2022-11-22 02:50:51,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:51,744 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 827 transitions. [2022-11-22 02:50:51,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:51,744 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 827 transitions. [2022-11-22 02:50:51,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:50:51,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:51,745 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, 1] [2022-11-22 02:50:51,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-22 02:50:51,746 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:51,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:51,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1459574739, now seen corresponding path program 1 times [2022-11-22 02:50:51,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:51,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558878768] [2022-11-22 02:50:51,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:51,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:52,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:52,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:52,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558878768] [2022-11-22 02:50:52,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558878768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:52,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:52,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:50:52,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543709757] [2022-11-22 02:50:52,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:52,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:50:52,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:52,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:50:52,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:50:52,037 INFO L87 Difference]: Start difference. First operand 646 states and 827 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:54,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:54,457 INFO L93 Difference]: Finished difference Result 1226 states and 1574 transitions. [2022-11-22 02:50:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:50:54,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:50:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:54,459 INFO L225 Difference]: With dead ends: 1226 [2022-11-22 02:50:54,459 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:50:54,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:50:54,461 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 1635 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 1481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:54,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1635 Valid, 1904 Invalid, 1481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1478 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:50:54,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:50:54,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 646. [2022-11-22 02:50:54,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.3095238095238095) internal successors, (825), 645 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:54,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 825 transitions. [2022-11-22 02:50:54,860 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 825 transitions. Word has length 97 [2022-11-22 02:50:54,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:50:54,860 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 825 transitions. [2022-11-22 02:50:54,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:54,860 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 825 transitions. [2022-11-22 02:50:54,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:50:54,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:50:54,861 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, 1] [2022-11-22 02:50:54,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-22 02:50:54,861 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:50:54,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:50:54,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1569790645, now seen corresponding path program 1 times [2022-11-22 02:50:54,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:50:54,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114550383] [2022-11-22 02:50:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:50:54,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:50:54,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:50:55,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:50:55,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:50:55,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114550383] [2022-11-22 02:50:55,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114550383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:50:55,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:50:55,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 02:50:55,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683230465] [2022-11-22 02:50:55,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:50:55,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:50:55,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:50:55,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:50:55,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:50:55,310 INFO L87 Difference]: Start difference. First operand 646 states and 825 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:50:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:50:59,892 INFO L93 Difference]: Finished difference Result 1628 states and 2102 transitions. [2022-11-22 02:50:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 02:50:59,894 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:50:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:50:59,896 INFO L225 Difference]: With dead ends: 1628 [2022-11-22 02:50:59,897 INFO L226 Difference]: Without dead ends: 1623 [2022-11-22 02:50:59,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:50:59,898 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 3326 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3326 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 1668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:50:59,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3326 Valid, 1709 Invalid, 1668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-22 02:50:59,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-11-22 02:51:00,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 654. [2022-11-22 02:51:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 638 states have (on average 1.3056426332288402) internal successors, (833), 653 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:00,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 833 transitions. [2022-11-22 02:51:00,245 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 833 transitions. Word has length 97 [2022-11-22 02:51:00,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:00,246 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 833 transitions. [2022-11-22 02:51:00,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:00,246 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 833 transitions. [2022-11-22 02:51:00,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:51:00,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:00,248 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, 1] [2022-11-22 02:51:00,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-22 02:51:00,248 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:00,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:00,249 INFO L85 PathProgramCache]: Analyzing trace with hash -810880663, now seen corresponding path program 1 times [2022-11-22 02:51:00,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:00,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660310284] [2022-11-22 02:51:00,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:00,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:00,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:00,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:00,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660310284] [2022-11-22 02:51:00,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660310284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:00,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:00,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 02:51:00,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913061666] [2022-11-22 02:51:00,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:00,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:51:00,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:51:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:51:00,779 INFO L87 Difference]: Start difference. First operand 654 states and 833 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:05,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:05,058 INFO L93 Difference]: Finished difference Result 1736 states and 2248 transitions. [2022-11-22 02:51:05,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 02:51:05,059 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:51:05,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:05,060 INFO L225 Difference]: With dead ends: 1736 [2022-11-22 02:51:05,061 INFO L226 Difference]: Without dead ends: 1634 [2022-11-22 02:51:05,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:51:05,062 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 3795 mSDsluCounter, 1210 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3795 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 1535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:05,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3795 Valid, 1591 Invalid, 1535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1389 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:51:05,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1634 states. [2022-11-22 02:51:05,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1634 to 662. [2022-11-22 02:51:05,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.3018575851393188) internal successors, (841), 661 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:05,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 841 transitions. [2022-11-22 02:51:05,445 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 841 transitions. Word has length 97 [2022-11-22 02:51:05,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:05,445 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 841 transitions. [2022-11-22 02:51:05,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:05,446 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 841 transitions. [2022-11-22 02:51:05,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:51:05,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:05,447 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, 1] [2022-11-22 02:51:05,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-22 02:51:05,447 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:05,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:05,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1948776647, now seen corresponding path program 1 times [2022-11-22 02:51:05,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:05,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211648339] [2022-11-22 02:51:05,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:05,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:05,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:05,683 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:05,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1211648339] [2022-11-22 02:51:05,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1211648339] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:05,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:05,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:51:05,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523464931] [2022-11-22 02:51:05,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:05,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:51:05,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:05,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:51:05,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:51:05,686 INFO L87 Difference]: Start difference. First operand 662 states and 841 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:08,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:08,074 INFO L93 Difference]: Finished difference Result 1222 states and 1564 transitions. [2022-11-22 02:51:08,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:51:08,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:51:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:08,076 INFO L225 Difference]: With dead ends: 1222 [2022-11-22 02:51:08,076 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:51:08,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:51:08,078 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 1634 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 1368 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:08,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 1777 Invalid, 1372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1368 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:51:08,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:51:08,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 662. [2022-11-22 02:51:08,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2987616099071206) internal successors, (839), 661 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 839 transitions. [2022-11-22 02:51:08,423 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 839 transitions. Word has length 97 [2022-11-22 02:51:08,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:08,423 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 839 transitions. [2022-11-22 02:51:08,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:08,424 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 839 transitions. [2022-11-22 02:51:08,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:51:08,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:08,424 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, 1] [2022-11-22 02:51:08,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-22 02:51:08,425 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash 766051541, now seen corresponding path program 1 times [2022-11-22 02:51:08,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:08,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079044204] [2022-11-22 02:51:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:08,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:08,716 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:08,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079044204] [2022-11-22 02:51:08,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079044204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:08,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:08,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:51:08,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004369474] [2022-11-22 02:51:08,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:08,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:51:08,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:51:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:51:08,718 INFO L87 Difference]: Start difference. First operand 662 states and 839 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:11,036 INFO L93 Difference]: Finished difference Result 1129 states and 1436 transitions. [2022-11-22 02:51:11,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:51:11,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:51:11,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:11,041 INFO L225 Difference]: With dead ends: 1129 [2022-11-22 02:51:11,041 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:51:11,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:51:11,042 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 1623 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 1365 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1623 SdHoareTripleChecker+Valid, 1802 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:11,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1623 Valid, 1802 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:51:11,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:51:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 662. [2022-11-22 02:51:11,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2956656346749227) internal successors, (837), 661 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 837 transitions. [2022-11-22 02:51:11,370 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 837 transitions. Word has length 97 [2022-11-22 02:51:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:11,370 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 837 transitions. [2022-11-22 02:51:11,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 837 transitions. [2022-11-22 02:51:11,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:51:11,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:11,371 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, 1] [2022-11-22 02:51:11,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-22 02:51:11,371 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:11,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1616718653, now seen corresponding path program 1 times [2022-11-22 02:51:11,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:11,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708165259] [2022-11-22 02:51:11,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:11,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:11,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708165259] [2022-11-22 02:51:11,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708165259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:11,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:11,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:51:11,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699410288] [2022-11-22 02:51:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:11,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:51:11,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:11,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:51:11,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:51:11,566 INFO L87 Difference]: Start difference. First operand 662 states and 837 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:13,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:13,945 INFO L93 Difference]: Finished difference Result 1205 states and 1532 transitions. [2022-11-22 02:51:13,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:51:13,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:51:13,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:13,946 INFO L225 Difference]: With dead ends: 1205 [2022-11-22 02:51:13,947 INFO L226 Difference]: Without dead ends: 1188 [2022-11-22 02:51:13,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:51:13,947 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1647 mSDsluCounter, 1330 mSDsCounter, 0 mSdLazyCounter, 1356 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:13,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 1780 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1356 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:51:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2022-11-22 02:51:14,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 662. [2022-11-22 02:51:14,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2925696594427245) internal successors, (835), 661 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:14,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 835 transitions. [2022-11-22 02:51:14,273 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 835 transitions. Word has length 97 [2022-11-22 02:51:14,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:14,274 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 835 transitions. [2022-11-22 02:51:14,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:14,274 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 835 transitions. [2022-11-22 02:51:14,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:51:14,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:14,275 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, 1] [2022-11-22 02:51:14,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-22 02:51:14,276 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:14,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:14,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1276634052, now seen corresponding path program 1 times [2022-11-22 02:51:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:14,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899478805] [2022-11-22 02:51:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:14,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:14,573 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:14,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899478805] [2022-11-22 02:51:14,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899478805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:14,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:14,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:51:14,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937360158] [2022-11-22 02:51:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:14,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:51:14,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:51:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:51:14,575 INFO L87 Difference]: Start difference. First operand 662 states and 835 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:16,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:16,922 INFO L93 Difference]: Finished difference Result 1226 states and 1562 transitions. [2022-11-22 02:51:16,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:51:16,923 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:51:16,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:16,924 INFO L225 Difference]: With dead ends: 1226 [2022-11-22 02:51:16,924 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:51:16,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:51:16,925 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1622 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 1378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:16,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 1833 Invalid, 1378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1374 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:51:16,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:51:17,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 662. [2022-11-22 02:51:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2894736842105263) internal successors, (833), 661 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 833 transitions. [2022-11-22 02:51:17,243 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 833 transitions. Word has length 97 [2022-11-22 02:51:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:17,243 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 833 transitions. [2022-11-22 02:51:17,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:17,244 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 833 transitions. [2022-11-22 02:51:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-22 02:51:17,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:17,245 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, 1] [2022-11-22 02:51:17,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-22 02:51:17,245 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 10914966, now seen corresponding path program 1 times [2022-11-22 02:51:17,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:17,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471662496] [2022-11-22 02:51:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:17,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:17,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:17,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:17,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471662496] [2022-11-22 02:51:17,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471662496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:17,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:17,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 02:51:17,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960709656] [2022-11-22 02:51:17,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:17,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:51:17,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:51:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:51:17,624 INFO L87 Difference]: Start difference. First operand 662 states and 833 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:21,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:21,891 INFO L93 Difference]: Finished difference Result 1628 states and 2090 transitions. [2022-11-22 02:51:21,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-22 02:51:21,892 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-11-22 02:51:21,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:21,893 INFO L225 Difference]: With dead ends: 1628 [2022-11-22 02:51:21,893 INFO L226 Difference]: Without dead ends: 1623 [2022-11-22 02:51:21,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-22 02:51:21,894 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 3613 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3613 SdHoareTripleChecker+Valid, 2003 SdHoareTripleChecker+Invalid, 1848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:21,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3613 Valid, 2003 Invalid, 1848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-22 02:51:21,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2022-11-22 02:51:22,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 670. [2022-11-22 02:51:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 654 states have (on average 1.2859327217125383) internal successors, (841), 669 states have internal predecessors, (841), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 841 transitions. [2022-11-22 02:51:22,234 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 841 transitions. Word has length 97 [2022-11-22 02:51:22,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:22,234 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 841 transitions. [2022-11-22 02:51:22,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 10 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 841 transitions. [2022-11-22 02:51:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 02:51:22,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:22,235 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, 1, 1] [2022-11-22 02:51:22,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-22 02:51:22,235 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:22,236 INFO L85 PathProgramCache]: Analyzing trace with hash 956375610, now seen corresponding path program 1 times [2022-11-22 02:51:22,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:22,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281782926] [2022-11-22 02:51:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:22,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:22,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:22,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:22,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281782926] [2022-11-22 02:51:22,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281782926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:22,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:22,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:51:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906888552] [2022-11-22 02:51:22,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:22,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:51:22,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:22,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:51:22,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:51:22,419 INFO L87 Difference]: Start difference. First operand 670 states and 841 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:24,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:24,753 INFO L93 Difference]: Finished difference Result 1230 states and 1563 transitions. [2022-11-22 02:51:24,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:51:24,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-22 02:51:24,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:24,755 INFO L225 Difference]: With dead ends: 1230 [2022-11-22 02:51:24,755 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:51:24,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:51:24,756 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1220 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:24,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 1555 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:51:24,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:51:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 662. [2022-11-22 02:51:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 646 states have (on average 1.2863777089783281) internal successors, (831), 661 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 831 transitions. [2022-11-22 02:51:25,109 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 831 transitions. Word has length 98 [2022-11-22 02:51:25,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:25,110 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 831 transitions. [2022-11-22 02:51:25,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:25,110 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 831 transitions. [2022-11-22 02:51:25,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 02:51:25,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:25,111 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, 1, 1] [2022-11-22 02:51:25,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-22 02:51:25,112 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:25,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:25,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1152702306, now seen corresponding path program 1 times [2022-11-22 02:51:25,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:25,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213743818] [2022-11-22 02:51:25,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:25,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:25,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:25,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:25,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213743818] [2022-11-22 02:51:25,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213743818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:25,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:25,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:51:25,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002362470] [2022-11-22 02:51:25,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:25,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:51:25,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:25,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:51:25,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:51:25,335 INFO L87 Difference]: Start difference. First operand 662 states and 831 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:27,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:27,721 INFO L93 Difference]: Finished difference Result 1129 states and 1426 transitions. [2022-11-22 02:51:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:51:27,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-22 02:51:27,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:27,723 INFO L225 Difference]: With dead ends: 1129 [2022-11-22 02:51:27,723 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:51:27,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:51:27,723 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1745 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1745 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:27,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1745 Valid, 1573 Invalid, 1246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:51:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:51:28,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 654. [2022-11-22 02:51:28,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 638 states have (on average 1.286833855799373) internal successors, (821), 653 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 821 transitions. [2022-11-22 02:51:28,055 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 821 transitions. Word has length 98 [2022-11-22 02:51:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:28,055 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 821 transitions. [2022-11-22 02:51:28,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 821 transitions. [2022-11-22 02:51:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 02:51:28,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:28,057 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, 1, 1] [2022-11-22 02:51:28,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-22 02:51:28,057 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1854308446, now seen corresponding path program 1 times [2022-11-22 02:51:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:28,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913516430] [2022-11-22 02:51:28,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:28,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:28,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:28,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913516430] [2022-11-22 02:51:28,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913516430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:28,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:28,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:51:28,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107140356] [2022-11-22 02:51:28,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:51:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:28,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:51:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:51:28,334 INFO L87 Difference]: Start difference. First operand 654 states and 821 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:30,705 INFO L93 Difference]: Finished difference Result 1226 states and 1554 transitions. [2022-11-22 02:51:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:51:30,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-22 02:51:30,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:30,709 INFO L225 Difference]: With dead ends: 1226 [2022-11-22 02:51:30,709 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:51:30,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:51:30,710 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1168 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 1353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:30,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 1641 Invalid, 1353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:51:30,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:51:31,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 646. [2022-11-22 02:51:31,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 630 states have (on average 1.2873015873015874) internal successors, (811), 645 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 811 transitions. [2022-11-22 02:51:31,047 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 811 transitions. Word has length 98 [2022-11-22 02:51:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:31,048 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 811 transitions. [2022-11-22 02:51:31,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 811 transitions. [2022-11-22 02:51:31,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-22 02:51:31,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:31,049 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, 1, 1] [2022-11-22 02:51:31,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-22 02:51:31,049 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:31,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:31,050 INFO L85 PathProgramCache]: Analyzing trace with hash 72196395, now seen corresponding path program 1 times [2022-11-22 02:51:31,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:31,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943914460] [2022-11-22 02:51:31,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:31,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:31,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:31,283 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:31,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943914460] [2022-11-22 02:51:31,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943914460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:31,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:31,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:51:31,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576073886] [2022-11-22 02:51:31,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:31,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:51:31,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:31,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:51:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:51:31,285 INFO L87 Difference]: Start difference. First operand 646 states and 811 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:33,747 INFO L93 Difference]: Finished difference Result 1129 states and 1422 transitions. [2022-11-22 02:51:33,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:51:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 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 98 [2022-11-22 02:51:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:33,748 INFO L225 Difference]: With dead ends: 1129 [2022-11-22 02:51:33,748 INFO L226 Difference]: Without dead ends: 1124 [2022-11-22 02:51:33,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:51:33,749 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1155 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:33,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1655 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:51:33,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2022-11-22 02:51:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 638. [2022-11-22 02:51:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 622 states have (on average 1.287781350482315) internal successors, (801), 637 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 801 transitions. [2022-11-22 02:51:34,079 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 801 transitions. Word has length 98 [2022-11-22 02:51:34,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:34,079 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 801 transitions. [2022-11-22 02:51:34,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 7 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:34,079 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 801 transitions. [2022-11-22 02:51:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 02:51:34,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:34,080 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, 1, 1, 1] [2022-11-22 02:51:34,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-22 02:51:34,081 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:34,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:34,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1517389818, now seen corresponding path program 1 times [2022-11-22 02:51:34,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:34,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925942509] [2022-11-22 02:51:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:34,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:34,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:34,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:34,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925942509] [2022-11-22 02:51:34,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925942509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:34,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:34,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:51:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838786607] [2022-11-22 02:51:34,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:34,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:51:34,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:34,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:51:34,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:51:34,681 INFO L87 Difference]: Start difference. First operand 638 states and 801 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:38,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:38,509 INFO L93 Difference]: Finished difference Result 2126 states and 2744 transitions. [2022-11-22 02:51:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 02:51:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-22 02:51:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:38,512 INFO L225 Difference]: With dead ends: 2126 [2022-11-22 02:51:38,512 INFO L226 Difference]: Without dead ends: 1916 [2022-11-22 02:51:38,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:51:38,513 INFO L413 NwaCegarLoop]: 1051 mSDtfsCounter, 2040 mSDsluCounter, 5931 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2040 SdHoareTripleChecker+Valid, 6982 SdHoareTripleChecker+Invalid, 870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:38,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2040 Valid, 6982 Invalid, 870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:51:38,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2022-11-22 02:51:38,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 526. [2022-11-22 02:51:38,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 514 states have (on average 1.2743190661478598) internal successors, (655), 525 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 655 transitions. [2022-11-22 02:51:38,853 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 655 transitions. Word has length 99 [2022-11-22 02:51:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:38,854 INFO L495 AbstractCegarLoop]: Abstraction has 526 states and 655 transitions. [2022-11-22 02:51:38,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 655 transitions. [2022-11-22 02:51:38,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 02:51:38,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:38,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:51:38,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-22 02:51:38,855 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:38,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:38,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2051081877, now seen corresponding path program 1 times [2022-11-22 02:51:38,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:38,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138441943] [2022-11-22 02:51:38,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:38,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:39,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:39,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138441943] [2022-11-22 02:51:39,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138441943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:39,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:39,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 02:51:39,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45460480] [2022-11-22 02:51:39,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:39,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:51:39,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:39,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:51:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:51:39,488 INFO L87 Difference]: Start difference. First operand 526 states and 655 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:41,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:41,498 INFO L93 Difference]: Finished difference Result 864 states and 1078 transitions. [2022-11-22 02:51:41,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:51:41,499 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-22 02:51:41,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:41,500 INFO L225 Difference]: With dead ends: 864 [2022-11-22 02:51:41,500 INFO L226 Difference]: Without dead ends: 760 [2022-11-22 02:51:41,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:51:41,500 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 1799 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1799 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:41,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1799 Valid, 2033 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:51:41,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-22 02:51:41,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 516. [2022-11-22 02:51:41,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 505 states have (on average 1.2673267326732673) internal successors, (640), 515 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:41,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 640 transitions. [2022-11-22 02:51:41,845 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 640 transitions. Word has length 99 [2022-11-22 02:51:41,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:41,845 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 640 transitions. [2022-11-22 02:51:41,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:41,845 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 640 transitions. [2022-11-22 02:51:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 02:51:41,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:41,846 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, 1, 1, 1] [2022-11-22 02:51:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-22 02:51:41,846 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1752184082, now seen corresponding path program 1 times [2022-11-22 02:51:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:41,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103161627] [2022-11-22 02:51:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:42,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:42,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:42,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103161627] [2022-11-22 02:51:42,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103161627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:42,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:42,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 02:51:42,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970625013] [2022-11-22 02:51:42,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:42,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:51:42,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:42,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:51:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:51:42,405 INFO L87 Difference]: Start difference. First operand 516 states and 640 transitions. Second operand has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:44,134 INFO L93 Difference]: Finished difference Result 856 states and 1063 transitions. [2022-11-22 02:51:44,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:51:44,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-22 02:51:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:44,135 INFO L225 Difference]: With dead ends: 856 [2022-11-22 02:51:44,135 INFO L226 Difference]: Without dead ends: 752 [2022-11-22 02:51:44,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:51:44,136 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 1782 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1782 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:44,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1782 Valid, 1676 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:51:44,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2022-11-22 02:51:44,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 504. [2022-11-22 02:51:44,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 494 states have (on average 1.2611336032388665) internal successors, (623), 503 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:44,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 623 transitions. [2022-11-22 02:51:44,482 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 623 transitions. Word has length 99 [2022-11-22 02:51:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:44,482 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 623 transitions. [2022-11-22 02:51:44,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.25) internal successors, (99), 11 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:44,483 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 623 transitions. [2022-11-22 02:51:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 02:51:44,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:44,484 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, 1, 1, 1] [2022-11-22 02:51:44,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-22 02:51:44,484 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:44,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash -28333066, now seen corresponding path program 1 times [2022-11-22 02:51:44,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:44,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755186955] [2022-11-22 02:51:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:44,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:47,116 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:47,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755186955] [2022-11-22 02:51:47,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755186955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:47,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:47,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-22 02:51:47,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276987710] [2022-11-22 02:51:47,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:47,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-22 02:51:47,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:47,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-22 02:51:47,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=962, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 02:51:47,118 INFO L87 Difference]: Start difference. First operand 504 states and 623 transitions. Second operand has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:54,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:51:54,986 INFO L93 Difference]: Finished difference Result 1066 states and 1337 transitions. [2022-11-22 02:51:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-22 02:51:54,987 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-22 02:51:54,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:51:54,988 INFO L225 Difference]: With dead ends: 1066 [2022-11-22 02:51:54,988 INFO L226 Difference]: Without dead ends: 961 [2022-11-22 02:51:54,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 570 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=529, Invalid=3131, Unknown=0, NotChecked=0, Total=3660 [2022-11-22 02:51:54,989 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 1391 mSDsluCounter, 9200 mSDsCounter, 0 mSdLazyCounter, 4804 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 9671 SdHoareTripleChecker+Invalid, 4827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 4804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:51:54,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1391 Valid, 9671 Invalid, 4827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 4804 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 02:51:54,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-11-22 02:51:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 523. [2022-11-22 02:51:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 513 states have (on average 1.2612085769980508) internal successors, (647), 522 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 647 transitions. [2022-11-22 02:51:55,385 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 647 transitions. Word has length 99 [2022-11-22 02:51:55,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:51:55,385 INFO L495 AbstractCegarLoop]: Abstraction has 523 states and 647 transitions. [2022-11-22 02:51:55,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.0) internal successors, (99), 32 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:51:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 647 transitions. [2022-11-22 02:51:55,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 02:51:55,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:51:55,387 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, 1, 1, 1] [2022-11-22 02:51:55,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-22 02:51:55,387 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:51:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:51:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1080698848, now seen corresponding path program 1 times [2022-11-22 02:51:55,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:51:55,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115893866] [2022-11-22 02:51:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:51:55,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:51:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:51:58,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:51:58,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:51:58,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115893866] [2022-11-22 02:51:58,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115893866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:51:58,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:51:58,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-11-22 02:51:58,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451320198] [2022-11-22 02:51:58,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:51:58,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-22 02:51:58,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:51:58,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-22 02:51:58,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2022-11-22 02:51:58,292 INFO L87 Difference]: Start difference. First operand 523 states and 647 transitions. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:07,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:07,906 INFO L93 Difference]: Finished difference Result 1185 states and 1497 transitions. [2022-11-22 02:52:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-22 02:52:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-22 02:52:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:07,908 INFO L225 Difference]: With dead ends: 1185 [2022-11-22 02:52:07,908 INFO L226 Difference]: Without dead ends: 1084 [2022-11-22 02:52:07,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 845 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=675, Invalid=3881, Unknown=0, NotChecked=0, Total=4556 [2022-11-22 02:52:07,909 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1430 mSDsluCounter, 10466 mSDsCounter, 0 mSdLazyCounter, 5549 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1430 SdHoareTripleChecker+Valid, 11089 SdHoareTripleChecker+Invalid, 5572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 5549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:07,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1430 Valid, 11089 Invalid, 5572 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 5549 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-22 02:52:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2022-11-22 02:52:08,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 533. [2022-11-22 02:52:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 523 states have (on average 1.260038240917782) internal successors, (659), 532 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 659 transitions. [2022-11-22 02:52:08,420 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 659 transitions. Word has length 99 [2022-11-22 02:52:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:08,420 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 659 transitions. [2022-11-22 02:52:08,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 34 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 659 transitions. [2022-11-22 02:52:08,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 02:52:08,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:08,422 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, 1, 1, 1] [2022-11-22 02:52:08,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-22 02:52:08,422 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:08,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:08,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1691259862, now seen corresponding path program 1 times [2022-11-22 02:52:08,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:08,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820749432] [2022-11-22 02:52:08,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:08,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:08,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:08,966 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:08,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820749432] [2022-11-22 02:52:08,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820749432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:08,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:08,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:52:08,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290714625] [2022-11-22 02:52:08,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:08,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:52:08,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:08,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:52:08,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:52:08,968 INFO L87 Difference]: Start difference. First operand 533 states and 659 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:12,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:12,924 INFO L93 Difference]: Finished difference Result 1935 states and 2477 transitions. [2022-11-22 02:52:12,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:52:12,925 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-22 02:52:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:12,927 INFO L225 Difference]: With dead ends: 1935 [2022-11-22 02:52:12,927 INFO L226 Difference]: Without dead ends: 1735 [2022-11-22 02:52:12,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2022-11-22 02:52:12,927 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 2449 mSDsluCounter, 4458 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 5319 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:12,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2449 Valid, 5319 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:52:12,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2022-11-22 02:52:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 431. [2022-11-22 02:52:13,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 422 states have (on average 1.2464454976303319) internal successors, (526), 430 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:13,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 526 transitions. [2022-11-22 02:52:13,285 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 526 transitions. Word has length 99 [2022-11-22 02:52:13,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:13,285 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 526 transitions. [2022-11-22 02:52:13,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:13,285 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 526 transitions. [2022-11-22 02:52:13,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-22 02:52:13,286 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:13,286 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, 1, 1, 1] [2022-11-22 02:52:13,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-22 02:52:13,286 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash -122361806, now seen corresponding path program 1 times [2022-11-22 02:52:13,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:13,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298695413] [2022-11-22 02:52:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:13,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:13,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:13,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298695413] [2022-11-22 02:52:13,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298695413] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:13,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:13,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:52:13,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026586470] [2022-11-22 02:52:13,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:13,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:52:13,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:13,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:52:13,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:52:13,915 INFO L87 Difference]: Start difference. First operand 431 states and 526 transitions. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:15,517 INFO L93 Difference]: Finished difference Result 842 states and 1060 transitions. [2022-11-22 02:52:15,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:52:15,517 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-11-22 02:52:15,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:15,518 INFO L225 Difference]: With dead ends: 842 [2022-11-22 02:52:15,518 INFO L226 Difference]: Without dead ends: 636 [2022-11-22 02:52:15,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:52:15,519 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 1022 mSDsluCounter, 2389 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 2780 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:15,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 2780 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:52:15,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-22 02:52:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 323. [2022-11-22 02:52:15,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 318 states have (on average 1.229559748427673) internal successors, (391), 322 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:15,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 391 transitions. [2022-11-22 02:52:15,894 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 391 transitions. Word has length 99 [2022-11-22 02:52:15,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:15,894 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 391 transitions. [2022-11-22 02:52:15,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 12 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 391 transitions. [2022-11-22 02:52:15,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 02:52:15,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:15,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:52:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-22 02:52:15,895 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:15,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash -480559089, now seen corresponding path program 1 times [2022-11-22 02:52:15,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:15,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243427003] [2022-11-22 02:52:15,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:15,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:15,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:16,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:16,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:16,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243427003] [2022-11-22 02:52:16,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243427003] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:16,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:16,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-22 02:52:16,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49691090] [2022-11-22 02:52:16,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:16,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:52:16,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:16,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:52:16,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:52:16,749 INFO L87 Difference]: Start difference. First operand 323 states and 391 transitions. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:21,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:21,097 INFO L93 Difference]: Finished difference Result 1250 states and 1597 transitions. [2022-11-22 02:52:21,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-22 02:52:21,098 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-22 02:52:21,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:21,099 INFO L225 Difference]: With dead ends: 1250 [2022-11-22 02:52:21,099 INFO L226 Difference]: Without dead ends: 1110 [2022-11-22 02:52:21,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=247, Invalid=1013, Unknown=0, NotChecked=0, Total=1260 [2022-11-22 02:52:21,100 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1173 mSDsluCounter, 5193 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 5757 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:21,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 5757 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:52:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2022-11-22 02:52:21,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 335. [2022-11-22 02:52:21,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 330 states have (on average 1.2272727272727273) internal successors, (405), 334 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:21,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 405 transitions. [2022-11-22 02:52:21,450 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 405 transitions. Word has length 100 [2022-11-22 02:52:21,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:21,450 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 405 transitions. [2022-11-22 02:52:21,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 405 transitions. [2022-11-22 02:52:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 02:52:21,451 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:21,451 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, 1, 1, 1, 1] [2022-11-22 02:52:21,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-22 02:52:21,451 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:21,452 INFO L85 PathProgramCache]: Analyzing trace with hash -125460370, now seen corresponding path program 1 times [2022-11-22 02:52:21,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:21,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349093823] [2022-11-22 02:52:21,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:21,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:21,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:21,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349093823] [2022-11-22 02:52:21,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349093823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:21,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:21,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:52:21,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202682818] [2022-11-22 02:52:21,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:52:21,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:21,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:52:21,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:52:21,713 INFO L87 Difference]: Start difference. First operand 335 states and 405 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:23,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:23,031 INFO L93 Difference]: Finished difference Result 490 states and 597 transitions. [2022-11-22 02:52:23,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-22 02:52:23,032 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-22 02:52:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:23,032 INFO L225 Difference]: With dead ends: 490 [2022-11-22 02:52:23,032 INFO L226 Difference]: Without dead ends: 483 [2022-11-22 02:52:23,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:52:23,033 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 723 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:23,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [723 Valid, 744 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:52:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-22 02:52:23,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 335. [2022-11-22 02:52:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 330 states have (on average 1.2242424242424241) internal successors, (404), 334 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:23,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 404 transitions. [2022-11-22 02:52:23,355 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 404 transitions. Word has length 100 [2022-11-22 02:52:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:23,356 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 404 transitions. [2022-11-22 02:52:23,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:23,356 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 404 transitions. [2022-11-22 02:52:23,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 02:52:23,356 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:23,356 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, 1, 1, 1, 1] [2022-11-22 02:52:23,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-22 02:52:23,357 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:23,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:23,357 INFO L85 PathProgramCache]: Analyzing trace with hash 38543128, now seen corresponding path program 1 times [2022-11-22 02:52:23,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:23,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924944057] [2022-11-22 02:52:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:23,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:23,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:23,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:23,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924944057] [2022-11-22 02:52:23,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924944057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:23,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:23,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:52:23,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903247756] [2022-11-22 02:52:23,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:23,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:52:23,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:23,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:52:23,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:52:23,525 INFO L87 Difference]: Start difference. First operand 335 states and 404 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:25,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:25,630 INFO L93 Difference]: Finished difference Result 821 states and 1034 transitions. [2022-11-22 02:52:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:52:25,630 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-22 02:52:25,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:25,631 INFO L225 Difference]: With dead ends: 821 [2022-11-22 02:52:25,631 INFO L226 Difference]: Without dead ends: 693 [2022-11-22 02:52:25,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:52:25,632 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 964 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:25,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 869 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:52:25,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-22 02:52:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 335. [2022-11-22 02:52:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 330 states have (on average 1.2181818181818183) internal successors, (402), 334 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:25,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 402 transitions. [2022-11-22 02:52:25,999 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 402 transitions. Word has length 100 [2022-11-22 02:52:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:25,999 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 402 transitions. [2022-11-22 02:52:25,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 7 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 402 transitions. [2022-11-22 02:52:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 02:52:26,000 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:26,000 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:52:26,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-22 02:52:26,000 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:26,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:26,000 INFO L85 PathProgramCache]: Analyzing trace with hash -801357341, now seen corresponding path program 1 times [2022-11-22 02:52:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:26,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485251813] [2022-11-22 02:52:26,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:26,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:26,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:26,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:26,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485251813] [2022-11-22 02:52:26,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485251813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:26,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:26,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-22 02:52:26,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106562370] [2022-11-22 02:52:26,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:26,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:52:26,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:26,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:52:26,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:52:26,404 INFO L87 Difference]: Start difference. First operand 335 states and 402 transitions. Second operand has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:29,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:29,005 INFO L93 Difference]: Finished difference Result 737 states and 918 transitions. [2022-11-22 02:52:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:52:29,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-22 02:52:29,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:29,006 INFO L225 Difference]: With dead ends: 737 [2022-11-22 02:52:29,007 INFO L226 Difference]: Without dead ends: 730 [2022-11-22 02:52:29,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=541, Unknown=0, NotChecked=0, Total=756 [2022-11-22 02:52:29,007 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 2037 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:29,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 843 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:52:29,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-11-22 02:52:29,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 339. [2022-11-22 02:52:29,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 334 states have (on average 1.215568862275449) internal successors, (406), 338 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 406 transitions. [2022-11-22 02:52:29,416 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 406 transitions. Word has length 100 [2022-11-22 02:52:29,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:29,416 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 406 transitions. [2022-11-22 02:52:29,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.090909090909092) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:29,416 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 406 transitions. [2022-11-22 02:52:29,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-22 02:52:29,416 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:29,417 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, 1, 1, 1, 1] [2022-11-22 02:52:29,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-22 02:52:29,417 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:29,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:29,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1340768153, now seen corresponding path program 1 times [2022-11-22 02:52:29,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:29,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102542299] [2022-11-22 02:52:29,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:29,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:29,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:29,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:29,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102542299] [2022-11-22 02:52:29,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102542299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:29,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:29,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 02:52:29,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102472930] [2022-11-22 02:52:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:29,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:52:29,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:29,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:52:29,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:52:29,930 INFO L87 Difference]: Start difference. First operand 339 states and 406 transitions. Second operand has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:31,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:31,307 INFO L93 Difference]: Finished difference Result 601 states and 741 transitions. [2022-11-22 02:52:31,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:52:31,307 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-11-22 02:52:31,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:31,308 INFO L225 Difference]: With dead ends: 601 [2022-11-22 02:52:31,308 INFO L226 Difference]: Without dead ends: 479 [2022-11-22 02:52:31,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:52:31,309 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 788 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:31,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1916 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:52:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-11-22 02:52:31,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 296. [2022-11-22 02:52:31,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 292 states have (on average 1.1986301369863013) internal successors, (350), 295 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:31,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 350 transitions. [2022-11-22 02:52:31,660 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 350 transitions. Word has length 100 [2022-11-22 02:52:31,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:31,661 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 350 transitions. [2022-11-22 02:52:31,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.333333333333334) internal successors, (100), 11 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:31,661 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 350 transitions. [2022-11-22 02:52:31,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-22 02:52:31,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:31,662 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, 1, 1, 1, 1, 1] [2022-11-22 02:52:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-22 02:52:31,662 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:31,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:31,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1435047818, now seen corresponding path program 1 times [2022-11-22 02:52:31,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:31,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769534481] [2022-11-22 02:52:31,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:31,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:31,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:31,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769534481] [2022-11-22 02:52:31,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769534481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:31,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:31,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:52:31,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6706743] [2022-11-22 02:52:31,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:31,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:52:31,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:31,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:52:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:52:31,832 INFO L87 Difference]: Start difference. First operand 296 states and 350 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:33,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:33,380 INFO L93 Difference]: Finished difference Result 447 states and 537 transitions. [2022-11-22 02:52:33,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:52:33,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-11-22 02:52:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:33,381 INFO L225 Difference]: With dead ends: 447 [2022-11-22 02:52:33,381 INFO L226 Difference]: Without dead ends: 440 [2022-11-22 02:52:33,382 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 [2022-11-22 02:52:33,382 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 475 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:33,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 701 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:52:33,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-22 02:52:33,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 292. [2022-11-22 02:52:33,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 288 states have (on average 1.1979166666666667) internal successors, (345), 291 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:33,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 345 transitions. [2022-11-22 02:52:33,737 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 345 transitions. Word has length 101 [2022-11-22 02:52:33,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:33,738 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 345 transitions. [2022-11-22 02:52:33,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:33,738 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 345 transitions. [2022-11-22 02:52:33,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 02:52:33,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:33,739 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, 1, 1, 1, 1, 1, 1] [2022-11-22 02:52:33,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-22 02:52:33,739 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:33,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:33,740 INFO L85 PathProgramCache]: Analyzing trace with hash 912718675, now seen corresponding path program 1 times [2022-11-22 02:52:33,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:33,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767703952] [2022-11-22 02:52:33,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:33,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:34,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:34,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:34,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767703952] [2022-11-22 02:52:34,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767703952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:34,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:34,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 02:52:34,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857475168] [2022-11-22 02:52:34,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:34,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-22 02:52:34,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:34,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-22 02:52:34,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:52:34,390 INFO L87 Difference]: Start difference. First operand 292 states and 345 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 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) [2022-11-22 02:52:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:36,984 INFO L93 Difference]: Finished difference Result 654 states and 809 transitions. [2022-11-22 02:52:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:52:36,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 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 102 [2022-11-22 02:52:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:36,986 INFO L225 Difference]: With dead ends: 654 [2022-11-22 02:52:36,986 INFO L226 Difference]: Without dead ends: 648 [2022-11-22 02:52:36,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:52:36,987 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 975 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:36,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [975 Valid, 1785 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:52:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-11-22 02:52:37,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 286. [2022-11-22 02:52:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 283 states have (on average 1.1943462897526502) internal successors, (338), 285 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:37,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 338 transitions. [2022-11-22 02:52:37,432 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 338 transitions. Word has length 102 [2022-11-22 02:52:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:37,432 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 338 transitions. [2022-11-22 02:52:37,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 11 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) [2022-11-22 02:52:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 338 transitions. [2022-11-22 02:52:37,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 02:52:37,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:37,433 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, 1, 1, 1, 1, 1, 1] [2022-11-22 02:52:37,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-22 02:52:37,433 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:37,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1107731518, now seen corresponding path program 1 times [2022-11-22 02:52:37,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:37,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232409157] [2022-11-22 02:52:37,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:37,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:40,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:40,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:40,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232409157] [2022-11-22 02:52:40,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232409157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:40,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:40,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2022-11-22 02:52:40,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585225279] [2022-11-22 02:52:40,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:40,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-22 02:52:40,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:40,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-22 02:52:40,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=949, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 02:52:40,077 INFO L87 Difference]: Start difference. First operand 286 states and 338 transitions. Second operand has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 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) [2022-11-22 02:52:45,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:45,864 INFO L93 Difference]: Finished difference Result 475 states and 567 transitions. [2022-11-22 02:52:45,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-22 02:52:45,865 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 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 102 [2022-11-22 02:52:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:45,866 INFO L225 Difference]: With dead ends: 475 [2022-11-22 02:52:45,866 INFO L226 Difference]: Without dead ends: 467 [2022-11-22 02:52:45,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=557, Invalid=3103, Unknown=0, NotChecked=0, Total=3660 [2022-11-22 02:52:45,867 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 776 mSDsluCounter, 4320 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 4553 SdHoareTripleChecker+Invalid, 2463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:45,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 4553 Invalid, 2463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 02:52:45,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2022-11-22 02:52:46,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 305. [2022-11-22 02:52:46,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 302 states have (on average 1.195364238410596) internal successors, (361), 304 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:46,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 361 transitions. [2022-11-22 02:52:46,461 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 361 transitions. Word has length 102 [2022-11-22 02:52:46,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:46,461 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 361 transitions. [2022-11-22 02:52:46,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.090909090909091) internal successors, (102), 32 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) [2022-11-22 02:52:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 361 transitions. [2022-11-22 02:52:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 02:52:46,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:46,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:52:46,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-22 02:52:46,462 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 110806707, now seen corresponding path program 1 times [2022-11-22 02:52:46,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:46,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233625665] [2022-11-22 02:52:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:48,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:48,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233625665] [2022-11-22 02:52:48,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233625665] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:48,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:48,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-22 02:52:48,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055986339] [2022-11-22 02:52:48,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:48,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-22 02:52:48,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-22 02:52:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2022-11-22 02:52:48,075 INFO L87 Difference]: Start difference. First operand 305 states and 361 transitions. Second operand has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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) [2022-11-22 02:52:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:51,835 INFO L93 Difference]: Finished difference Result 342 states and 399 transitions. [2022-11-22 02:52:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 02:52:51,836 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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 102 [2022-11-22 02:52:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:51,836 INFO L225 Difference]: With dead ends: 342 [2022-11-22 02:52:51,836 INFO L226 Difference]: Without dead ends: 334 [2022-11-22 02:52:51,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=496, Invalid=2810, Unknown=0, NotChecked=0, Total=3306 [2022-11-22 02:52:51,837 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 704 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 1983 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:51,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 2822 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1983 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-22 02:52:51,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-11-22 02:52:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 314. [2022-11-22 02:52:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 311 states have (on average 1.1961414790996785) internal successors, (372), 313 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) [2022-11-22 02:52:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 372 transitions. [2022-11-22 02:52:52,200 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 372 transitions. Word has length 102 [2022-11-22 02:52:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:52,200 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 372 transitions. [2022-11-22 02:52:52,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.2903225806451615) internal successors, (102), 31 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) [2022-11-22 02:52:52,201 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 372 transitions. [2022-11-22 02:52:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-22 02:52:52,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:52,201 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:52:52,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-22 02:52:52,202 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:52,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:52,202 INFO L85 PathProgramCache]: Analyzing trace with hash -2140279419, now seen corresponding path program 1 times [2022-11-22 02:52:52,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:52,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823748041] [2022-11-22 02:52:52,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:52,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:52,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:52,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823748041] [2022-11-22 02:52:52,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823748041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:52,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:52,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:52:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147042089] [2022-11-22 02:52:52,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:52,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:52:52,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:52,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:52:52,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:52:52,756 INFO L87 Difference]: Start difference. First operand 314 states and 372 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:56,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:52:56,159 INFO L93 Difference]: Finished difference Result 908 states and 1142 transitions. [2022-11-22 02:52:56,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-22 02:52:56,159 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-11-22 02:52:56,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:52:56,160 INFO L225 Difference]: With dead ends: 908 [2022-11-22 02:52:56,160 INFO L226 Difference]: Without dead ends: 893 [2022-11-22 02:52:56,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:52:56,161 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1139 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:52:56,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 2721 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:52:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-22 02:52:56,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 293. [2022-11-22 02:52:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 291 states have (on average 1.1924398625429553) internal successors, (347), 292 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:56,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 347 transitions. [2022-11-22 02:52:56,592 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 347 transitions. Word has length 103 [2022-11-22 02:52:56,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:52:56,592 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 347 transitions. [2022-11-22 02:52:56,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:52:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 347 transitions. [2022-11-22 02:52:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-22 02:52:56,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:52:56,592 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:52:56,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-22 02:52:56,593 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:52:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:52:56,593 INFO L85 PathProgramCache]: Analyzing trace with hash 131660042, now seen corresponding path program 1 times [2022-11-22 02:52:56,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:52:56,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363035987] [2022-11-22 02:52:56,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:52:56,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:52:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:52:57,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:52:57,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:52:57,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363035987] [2022-11-22 02:52:57,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363035987] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:52:57,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:52:57,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:52:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174420727] [2022-11-22 02:52:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:52:57,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:52:57,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:52:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:52:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:52:57,268 INFO L87 Difference]: Start difference. First operand 293 states and 347 transitions. Second operand has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:00,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:53:00,409 INFO L93 Difference]: Finished difference Result 897 states and 1129 transitions. [2022-11-22 02:53:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-22 02:53:00,409 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-11-22 02:53:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:53:00,410 INFO L225 Difference]: With dead ends: 897 [2022-11-22 02:53:00,410 INFO L226 Difference]: Without dead ends: 871 [2022-11-22 02:53:00,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-11-22 02:53:00,411 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 895 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:53:00,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 3099 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:53:00,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2022-11-22 02:53:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 244. [2022-11-22 02:53:00,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.1893004115226338) internal successors, (289), 243 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 289 transitions. [2022-11-22 02:53:00,761 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 289 transitions. Word has length 103 [2022-11-22 02:53:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:53:00,761 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 289 transitions. [2022-11-22 02:53:00,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.923076923076923) internal successors, (103), 12 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 289 transitions. [2022-11-22 02:53:00,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-22 02:53:00,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:53:00,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:53:00,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-22 02:53:00,762 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:53:00,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:53:00,763 INFO L85 PathProgramCache]: Analyzing trace with hash -345625332, now seen corresponding path program 1 times [2022-11-22 02:53:00,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:53:00,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548231759] [2022-11-22 02:53:00,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:53:00,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:53:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:53:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:53:00,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:53:00,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548231759] [2022-11-22 02:53:00,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548231759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:53:00,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:53:00,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:53:00,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130315335] [2022-11-22 02:53:00,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:53:00,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:53:00,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:53:00,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:53:00,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:00,891 INFO L87 Difference]: Start difference. First operand 244 states and 289 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:53:01,500 INFO L93 Difference]: Finished difference Result 351 states and 430 transitions. [2022-11-22 02:53:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:53:01,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-22 02:53:01,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:53:01,501 INFO L225 Difference]: With dead ends: 351 [2022-11-22 02:53:01,501 INFO L226 Difference]: Without dead ends: 301 [2022-11-22 02:53:01,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:01,502 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 75 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:53:01,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:53:01,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-22 02:53:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 291. [2022-11-22 02:53:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.206896551724138) internal successors, (350), 290 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2022-11-22 02:53:01,989 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 122 [2022-11-22 02:53:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:53:01,989 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2022-11-22 02:53:01,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2022-11-22 02:53:01,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-22 02:53:01,990 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:53:01,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:53:01,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-22 02:53:01,990 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:53:01,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:53:01,991 INFO L85 PathProgramCache]: Analyzing trace with hash -161719874, now seen corresponding path program 1 times [2022-11-22 02:53:01,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:53:01,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664408357] [2022-11-22 02:53:01,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:53:01,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:53:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:53:02,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:53:02,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:53:02,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664408357] [2022-11-22 02:53:02,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664408357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:53:02,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:53:02,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:53:02,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397144002] [2022-11-22 02:53:02,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:53:02,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:53:02,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:53:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:53:02,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:02,105 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:03,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:53:03,115 INFO L93 Difference]: Finished difference Result 575 states and 726 transitions. [2022-11-22 02:53:03,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:53:03,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 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 125 [2022-11-22 02:53:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:53:03,116 INFO L225 Difference]: With dead ends: 575 [2022-11-22 02:53:03,116 INFO L226 Difference]: Without dead ends: 433 [2022-11-22 02:53:03,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:03,117 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 68 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:53:03,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:53:03,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-11-22 02:53:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 419. [2022-11-22 02:53:04,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.2416267942583732) internal successors, (519), 418 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:04,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 519 transitions. [2022-11-22 02:53:04,002 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 519 transitions. Word has length 125 [2022-11-22 02:53:04,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:53:04,002 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 519 transitions. [2022-11-22 02:53:04,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:04,002 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 519 transitions. [2022-11-22 02:53:04,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-22 02:53:04,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:53:04,003 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:53:04,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-22 02:53:04,003 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:53:04,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:53:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash -417633743, now seen corresponding path program 1 times [2022-11-22 02:53:04,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:53:04,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520125645] [2022-11-22 02:53:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:53:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:53:04,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:53:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:53:04,104 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:53:04,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520125645] [2022-11-22 02:53:04,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520125645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:53:04,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:53:04,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:53:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209672090] [2022-11-22 02:53:04,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:53:04,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:53:04,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:53:04,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:53:04,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:04,105 INFO L87 Difference]: Start difference. First operand 419 states and 519 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:05,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:53:05,945 INFO L93 Difference]: Finished difference Result 959 states and 1233 transitions. [2022-11-22 02:53:05,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:53:05,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-11-22 02:53:05,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:53:05,946 INFO L225 Difference]: With dead ends: 959 [2022-11-22 02:53:05,946 INFO L226 Difference]: Without dead ends: 689 [2022-11-22 02:53:05,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:05,947 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 61 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:53:05,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:53:05,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-11-22 02:53:07,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 663. [2022-11-22 02:53:07,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.2673716012084593) internal successors, (839), 662 states have internal predecessors, (839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:07,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 839 transitions. [2022-11-22 02:53:07,629 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 839 transitions. Word has length 128 [2022-11-22 02:53:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:53:07,629 INFO L495 AbstractCegarLoop]: Abstraction has 663 states and 839 transitions. [2022-11-22 02:53:07,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 839 transitions. [2022-11-22 02:53:07,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 02:53:07,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:53:07,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:53:07,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-22 02:53:07,631 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:53:07,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:53:07,631 INFO L85 PathProgramCache]: Analyzing trace with hash 935915040, now seen corresponding path program 1 times [2022-11-22 02:53:07,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:53:07,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393500461] [2022-11-22 02:53:07,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:53:07,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:53:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:53:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:53:07,772 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:53:07,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393500461] [2022-11-22 02:53:07,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393500461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:53:07,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:53:07,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:53:07,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611621858] [2022-11-22 02:53:07,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:53:07,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:53:07,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:53:07,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:53:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:07,774 INFO L87 Difference]: Start difference. First operand 663 states and 839 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:53:11,175 INFO L93 Difference]: Finished difference Result 1691 states and 2193 transitions. [2022-11-22 02:53:11,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:53:11,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2022-11-22 02:53:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:53:11,176 INFO L225 Difference]: With dead ends: 1691 [2022-11-22 02:53:11,176 INFO L226 Difference]: Without dead ends: 1177 [2022-11-22 02:53:11,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:11,178 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 54 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:53:11,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:53:11,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2022-11-22 02:53:14,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1127. [2022-11-22 02:53:14,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 1126 states have (on average 1.2815275310834813) internal successors, (1443), 1126 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:14,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1443 transitions. [2022-11-22 02:53:14,752 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1443 transitions. Word has length 131 [2022-11-22 02:53:14,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:53:14,752 INFO L495 AbstractCegarLoop]: Abstraction has 1127 states and 1443 transitions. [2022-11-22 02:53:14,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:14,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1443 transitions. [2022-11-22 02:53:14,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-22 02:53:14,753 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:53:14,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:53:14,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-22 02:53:14,754 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:53:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:53:14,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1832033498, now seen corresponding path program 1 times [2022-11-22 02:53:14,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:53:14,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386170920] [2022-11-22 02:53:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:53:14,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:53:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:53:14,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:53:14,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:53:14,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386170920] [2022-11-22 02:53:14,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386170920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:53:14,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:53:14,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:53:14,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209869867] [2022-11-22 02:53:14,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:53:14,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:53:14,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:53:14,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:53:14,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:14,897 INFO L87 Difference]: Start difference. First operand 1127 states and 1443 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:21,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:53:21,579 INFO L93 Difference]: Finished difference Result 3083 states and 4005 transitions. [2022-11-22 02:53:21,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:53:21,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2022-11-22 02:53:21,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:53:21,581 INFO L225 Difference]: With dead ends: 3083 [2022-11-22 02:53:21,582 INFO L226 Difference]: Without dead ends: 2105 [2022-11-22 02:53:21,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:21,583 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 47 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:53:21,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 348 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:53:21,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2022-11-22 02:53:28,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2007. [2022-11-22 02:53:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2007 states, 2006 states have (on average 1.2856430707876372) internal successors, (2579), 2006 states have internal predecessors, (2579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2007 states to 2007 states and 2579 transitions. [2022-11-22 02:53:28,697 INFO L78 Accepts]: Start accepts. Automaton has 2007 states and 2579 transitions. Word has length 134 [2022-11-22 02:53:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:53:28,697 INFO L495 AbstractCegarLoop]: Abstraction has 2007 states and 2579 transitions. [2022-11-22 02:53:28,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:28,697 INFO L276 IsEmpty]: Start isEmpty. Operand 2007 states and 2579 transitions. [2022-11-22 02:53:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 02:53:28,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:53:28,698 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:53:28,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-22 02:53:28,698 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:53:28,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:53:28,699 INFO L85 PathProgramCache]: Analyzing trace with hash -415495780, now seen corresponding path program 1 times [2022-11-22 02:53:28,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:53:28,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419753689] [2022-11-22 02:53:28,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:53:28,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:53:28,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:53:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:53:28,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:53:28,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419753689] [2022-11-22 02:53:28,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419753689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:53:28,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:53:28,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:53:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107115828] [2022-11-22 02:53:28,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:53:28,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:53:28,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:53:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:53:28,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:28,845 INFO L87 Difference]: Start difference. First operand 2007 states and 2579 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:44,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:53:44,305 INFO L93 Difference]: Finished difference Result 5723 states and 7413 transitions. [2022-11-22 02:53:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:53:44,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2022-11-22 02:53:44,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:53:44,310 INFO L225 Difference]: With dead ends: 5723 [2022-11-22 02:53:44,310 INFO L226 Difference]: Without dead ends: 3865 [2022-11-22 02:53:44,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:53:44,314 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 37 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:53:44,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 348 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:53:44,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2022-11-22 02:53:57,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3671. [2022-11-22 02:53:57,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3670 states have (on average 1.2825613079019074) internal successors, (4707), 3670 states have internal predecessors, (4707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 4707 transitions. [2022-11-22 02:53:57,796 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 4707 transitions. Word has length 137 [2022-11-22 02:53:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:53:57,796 INFO L495 AbstractCegarLoop]: Abstraction has 3671 states and 4707 transitions. [2022-11-22 02:53:57,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:53:57,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 4707 transitions. [2022-11-22 02:53:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-22 02:53:57,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:53:57,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:53:57,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-22 02:53:57,798 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:53:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:53:57,798 INFO L85 PathProgramCache]: Analyzing trace with hash 1140416929, now seen corresponding path program 1 times [2022-11-22 02:53:57,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:53:57,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785807779] [2022-11-22 02:53:57,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:53:57,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:53:57,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:53:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:53:57,927 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:53:57,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785807779] [2022-11-22 02:53:57,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785807779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:53:57,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:53:57,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:53:57,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202314050] [2022-11-22 02:53:57,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:53:57,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:53:57,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:53:57,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:53:57,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:53:57,929 INFO L87 Difference]: Start difference. First operand 3671 states and 4707 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:54:45,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:54:45,309 INFO L93 Difference]: Finished difference Result 14948 states and 19308 transitions. [2022-11-22 02:54:45,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:54:45,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2022-11-22 02:54:45,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:54:45,321 INFO L225 Difference]: With dead ends: 14948 [2022-11-22 02:54:45,321 INFO L226 Difference]: Without dead ends: 11426 [2022-11-22 02:54:45,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:54:45,326 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1188 mSDsluCounter, 2037 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:54:45,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 2204 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:54:45,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11426 states. [2022-11-22 02:55:07,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11426 to 5203. [2022-11-22 02:55:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.2731641676278354) internal successors, (6623), 5202 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:55:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 6623 transitions. [2022-11-22 02:55:07,636 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 6623 transitions. Word has length 140 [2022-11-22 02:55:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:55:07,637 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 6623 transitions. [2022-11-22 02:55:07,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:55:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 6623 transitions. [2022-11-22 02:55:07,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-22 02:55:07,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:55:07,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:55:07,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-22 02:55:07,638 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:55:07,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:55:07,639 INFO L85 PathProgramCache]: Analyzing trace with hash -567668542, now seen corresponding path program 1 times [2022-11-22 02:55:07,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:55:07,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85242451] [2022-11-22 02:55:07,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:55:07,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:55:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:55:07,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:55:07,724 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:55:07,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85242451] [2022-11-22 02:55:07,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85242451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:55:07,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:55:07,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:55:07,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836831232] [2022-11-22 02:55:07,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:55:07,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:55:07,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:55:07,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:55:07,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:55:07,728 INFO L87 Difference]: Start difference. First operand 5203 states and 6623 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:55:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:55:28,502 INFO L93 Difference]: Finished difference Result 10259 states and 13085 transitions. [2022-11-22 02:55:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:55:28,503 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-11-22 02:55:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:55:28,508 INFO L225 Difference]: With dead ends: 10259 [2022-11-22 02:55:28,508 INFO L226 Difference]: Without dead ends: 5205 [2022-11-22 02:55:28,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:55:28,512 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 37 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:55:28,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 280 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:55:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5205 states. [2022-11-22 02:55:49,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5205 to 5203. [2022-11-22 02:55:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 1.2727797001153403) internal successors, (6621), 5202 states have internal predecessors, (6621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:55:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 6621 transitions. [2022-11-22 02:55:49,315 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 6621 transitions. Word has length 142 [2022-11-22 02:55:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:55:49,315 INFO L495 AbstractCegarLoop]: Abstraction has 5203 states and 6621 transitions. [2022-11-22 02:55:49,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:55:49,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 6621 transitions. [2022-11-22 02:55:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-22 02:55:49,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:55:49,316 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:55:49,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-22 02:55:49,317 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:55:49,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:55:49,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1397585046, now seen corresponding path program 1 times [2022-11-22 02:55:49,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:55:49,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123105946] [2022-11-22 02:55:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:55:49,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:55:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:55:49,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:55:49,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:55:49,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123105946] [2022-11-22 02:55:49,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123105946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:55:49,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:55:49,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:55:49,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876603161] [2022-11-22 02:55:49,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:55:49,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:55:49,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:55:49,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:55:49,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:55:49,369 INFO L87 Difference]: Start difference. First operand 5203 states and 6621 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:56:15,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:56:15,547 INFO L93 Difference]: Finished difference Result 11603 states and 14809 transitions. [2022-11-22 02:56:15,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:56:15,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-11-22 02:56:15,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:56:15,556 INFO L225 Difference]: With dead ends: 11603 [2022-11-22 02:56:15,556 INFO L226 Difference]: Without dead ends: 6549 [2022-11-22 02:56:15,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:56:15,560 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 95 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:56:15,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 268 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-22 02:56:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6549 states. [2022-11-22 02:56:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6549 to 6547. [2022-11-22 02:56:40,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 1.265352887259395) internal successors, (8283), 6546 states have internal predecessors, (8283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:56:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8283 transitions. [2022-11-22 02:56:40,189 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8283 transitions. Word has length 142 [2022-11-22 02:56:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:56:40,189 INFO L495 AbstractCegarLoop]: Abstraction has 6547 states and 8283 transitions. [2022-11-22 02:56:40,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:56:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8283 transitions. [2022-11-22 02:56:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-22 02:56:40,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:56:40,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:56:40,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-22 02:56:40,190 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:56:40,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:56:40,191 INFO L85 PathProgramCache]: Analyzing trace with hash -537646549, now seen corresponding path program 1 times [2022-11-22 02:56:40,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:56:40,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838760131] [2022-11-22 02:56:40,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:56:40,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:56:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:56:40,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:56:40,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:56:40,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838760131] [2022-11-22 02:56:40,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838760131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:56:40,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:56:40,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:56:40,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489509455] [2022-11-22 02:56:40,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:56:40,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:56:40,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:56:40,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:56:40,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:56:40,423 INFO L87 Difference]: Start difference. First operand 6547 states and 8283 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:57:15,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:57:15,938 INFO L93 Difference]: Finished difference Result 9198 states and 11521 transitions. [2022-11-22 02:57:15,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:57:15,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-11-22 02:57:15,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:57:15,954 INFO L225 Difference]: With dead ends: 9198 [2022-11-22 02:57:15,954 INFO L226 Difference]: Without dead ends: 9196 [2022-11-22 02:57:15,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:57:15,956 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 394 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:57:15,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1123 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:57:15,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9196 states. [2022-11-22 02:57:40,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9196 to 6547. [2022-11-22 02:57:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 1.2506874427131072) internal successors, (8187), 6546 states have internal predecessors, (8187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:57:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8187 transitions. [2022-11-22 02:57:40,171 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8187 transitions. Word has length 143 [2022-11-22 02:57:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:57:40,172 INFO L495 AbstractCegarLoop]: Abstraction has 6547 states and 8187 transitions. [2022-11-22 02:57:40,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:57:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8187 transitions. [2022-11-22 02:57:40,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-22 02:57:40,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:57:40,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:57:40,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-22 02:57:40,174 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:57:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:57:40,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1062681457, now seen corresponding path program 1 times [2022-11-22 02:57:40,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:57:40,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717888516] [2022-11-22 02:57:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:57:40,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:57:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:57:40,500 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 02:57:40,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:57:40,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717888516] [2022-11-22 02:57:40,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717888516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:57:40,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:57:40,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:57:40,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988815110] [2022-11-22 02:57:40,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:57:40,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:57:40,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:57:40,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:57:40,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:57:40,502 INFO L87 Difference]: Start difference. First operand 6547 states and 8187 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:58:19,344 INFO L93 Difference]: Finished difference Result 16526 states and 20689 transitions. [2022-11-22 02:58:19,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:58:19,344 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 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 164 [2022-11-22 02:58:19,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:58:19,358 INFO L225 Difference]: With dead ends: 16526 [2022-11-22 02:58:19,358 INFO L226 Difference]: Without dead ends: 10113 [2022-11-22 02:58:19,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-11-22 02:58:19,364 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 453 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:58:19,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 466 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:58:19,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10113 states. [2022-11-22 02:58:43,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10113 to 6547. [2022-11-22 02:58:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6547 states, 6546 states have (on average 1.2503819126183928) internal successors, (8185), 6546 states have internal predecessors, (8185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:43,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6547 states to 6547 states and 8185 transitions. [2022-11-22 02:58:43,934 INFO L78 Accepts]: Start accepts. Automaton has 6547 states and 8185 transitions. Word has length 164 [2022-11-22 02:58:43,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:58:43,934 INFO L495 AbstractCegarLoop]: Abstraction has 6547 states and 8185 transitions. [2022-11-22 02:58:43,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 7 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:58:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6547 states and 8185 transitions. [2022-11-22 02:58:43,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-22 02:58:43,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:58:43,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:58:43,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-22 02:58:43,936 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 02:58:43,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:58:43,937 INFO L85 PathProgramCache]: Analyzing trace with hash 118748482, now seen corresponding path program 1 times [2022-11-22 02:58:43,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:58:43,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594555669] [2022-11-22 02:58:43,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:58:43,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:58:44,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:58:46,207 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-22 02:58:46,207 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:58:46,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594555669] [2022-11-22 02:58:46,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594555669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:58:46,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:58:46,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-22 02:58:46,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241681030] [2022-11-22 02:58:46,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:58:46,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-22 02:58:46,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:58:46,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-22 02:58:46,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=866, Unknown=0, NotChecked=0, Total=930 [2022-11-22 02:58:46,209 INFO L87 Difference]: Start difference. First operand 6547 states and 8185 transitions. Second operand has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:59:39,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:59:39,339 INFO L93 Difference]: Finished difference Result 19396 states and 24292 transitions. [2022-11-22 02:59:39,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-22 02:59:39,340 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 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 166 [2022-11-22 02:59:39,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:59:39,359 INFO L225 Difference]: With dead ends: 19396 [2022-11-22 02:59:39,359 INFO L226 Difference]: Without dead ends: 12988 [2022-11-22 02:59:39,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=454, Invalid=2968, Unknown=0, NotChecked=0, Total=3422 [2022-11-22 02:59:39,367 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 782 mSDsluCounter, 3921 mSDsCounter, 0 mSdLazyCounter, 2314 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 4098 SdHoareTripleChecker+Invalid, 2314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:59:39,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 4098 Invalid, 2314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2314 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-22 02:59:39,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12988 states. [2022-11-22 03:00:03,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12988 to 6567. [2022-11-22 03:00:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6567 states, 6566 states have (on average 1.2500761498629303) internal successors, (8208), 6566 states have internal predecessors, (8208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 03:00:03,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6567 states to 6567 states and 8208 transitions. [2022-11-22 03:00:03,966 INFO L78 Accepts]: Start accepts. Automaton has 6567 states and 8208 transitions. Word has length 166 [2022-11-22 03:00:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 03:00:03,966 INFO L495 AbstractCegarLoop]: Abstraction has 6567 states and 8208 transitions. [2022-11-22 03:00:03,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.967741935483871) internal successors, (154), 31 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 03:00:03,967 INFO L276 IsEmpty]: Start isEmpty. Operand 6567 states and 8208 transitions. [2022-11-22 03:00:03,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-22 03:00:03,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 03:00:03,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 03:00:03,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-22 03:00:03,969 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 19 more)] === [2022-11-22 03:00:03,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 03:00:03,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1228044663, now seen corresponding path program 1 times [2022-11-22 03:00:03,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 03:00:03,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305314955] [2022-11-22 03:00:03,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 03:00:03,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 03:00:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 03:00:18,938 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 03:00:18,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 03:00:18,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305314955] [2022-11-22 03:00:18,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305314955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 03:00:18,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332209691] [2022-11-22 03:00:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 03:00:18,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 03:00:18,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/z3 [2022-11-22 03:00:18,942 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 03:00:18,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e442f26-011b-4ddb-be9e-6b3e235e252d/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 03:00:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 03:00:19,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 116 conjunts are in the unsatisfiable core [2022-11-22 03:00:19,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 03:01:15,351 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 03:01:15,351 INFO L328 TraceCheckSpWp]: Computing backward predicates...