./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c7aa3cc4b1f15d564db90712e4f440d0f111d49f542d9eda58173576bb757792 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-14 06:51:24,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:51:24,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:51:25,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:51:25,009 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:51:25,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:51:25,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:51:25,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:51:25,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:51:25,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:51:25,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:51:25,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:51:25,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:51:25,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:51:25,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:51:25,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:51:25,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:51:25,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:51:25,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:51:25,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:51:25,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:51:25,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:51:25,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:51:25,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:51:25,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:51:25,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:51:25,027 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:51:25,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:51:25,028 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:51:25,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:51:25,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:51:25,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:51:25,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:51:25,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:51:25,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:51:25,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:51:25,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:51:25,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:51:25,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:51:25,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:51:25,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:51:25,034 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:51:25,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:51:25,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:51:25,049 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:51:25,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:51:25,050 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:51:25,050 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:51:25,050 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:51:25,050 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:51:25,051 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:51:25,051 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:51:25,051 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:51:25,051 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:51:25,051 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:51:25,051 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:51:25,051 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:51:25,051 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:51:25,051 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:51:25,052 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:51:25,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:51:25,052 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:51:25,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:51:25,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:51:25,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:51:25,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:51:25,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:51:25,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:51:25,054 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:51:25,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:51:25,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:51:25,054 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:51:25,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:51:25,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:51:25,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:51:25,055 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7aa3cc4b1f15d564db90712e4f440d0f111d49f542d9eda58173576bb757792 [2022-12-14 06:51:25,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:51:25,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:51:25,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:51:25,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:51:25,251 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:51:25,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-12-14 06:51:27,764 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:51:27,964 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:51:27,964 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-12-14 06:51:27,974 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/data/d19edf205/256ff7614daf451998613cc81223453c/FLAG3f95f9cc6 [2022-12-14 06:51:27,984 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/data/d19edf205/256ff7614daf451998613cc81223453c [2022-12-14 06:51:27,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:51:27,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:51:27,988 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:51:27,988 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:51:27,991 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:51:27,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:51:27" (1/1) ... [2022-12-14 06:51:27,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2533961d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:27, skipping insertion in model container [2022-12-14 06:51:27,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:51:27" (1/1) ... [2022-12-14 06:51:27,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:51:28,039 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:51:28,203 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9421,9434] [2022-12-14 06:51:28,221 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12913,12926] [2022-12-14 06:51:28,228 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14069,14082] [2022-12-14 06:51:28,232 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14725,14738] [2022-12-14 06:51:28,240 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16246,16259] [2022-12-14 06:51:28,244 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16902,16915] [2022-12-14 06:51:28,249 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17886,17899] [2022-12-14 06:51:28,258 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20224,20237] [2022-12-14 06:51:28,262 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20883,20896] [2022-12-14 06:51:28,267 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21907,21920] [2022-12-14 06:51:28,274 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23782,23795] [2022-12-14 06:51:28,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:51:28,347 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:51:28,390 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[9421,9434] [2022-12-14 06:51:28,409 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[12913,12926] [2022-12-14 06:51:28,414 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14069,14082] [2022-12-14 06:51:28,417 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[14725,14738] [2022-12-14 06:51:28,426 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16246,16259] [2022-12-14 06:51:28,429 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[16902,16915] [2022-12-14 06:51:28,432 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[17886,17899] [2022-12-14 06:51:28,438 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20224,20237] [2022-12-14 06:51:28,441 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[20883,20896] [2022-12-14 06:51:28,445 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[21907,21920] [2022-12-14 06:51:28,450 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_01107acb-b9aa-4b17-8f17-1a70c90de21e/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c[23782,23795] [2022-12-14 06:51:28,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:51:28,506 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:51:28,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28 WrapperNode [2022-12-14 06:51:28,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:51:28,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:51:28,507 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:51:28,507 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:51:28,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,569 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1870 [2022-12-14 06:51:28,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:51:28,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:51:28,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:51:28,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:51:28,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,606 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:51:28,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:51:28,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:51:28,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:51:28,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (1/1) ... [2022-12-14 06:51:28,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:51:28,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:51:28,642 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:51:28,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:51:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:51:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:51:28,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:51:28,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:51:28,816 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:51:28,819 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:51:29,594 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:51:29,658 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:51:29,658 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-14 06:51:29,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:51:29 BoogieIcfgContainer [2022-12-14 06:51:29,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:51:29,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:51:29,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:51:29,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:51:29,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:51:27" (1/3) ... [2022-12-14 06:51:29,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74be1cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:51:29, skipping insertion in model container [2022-12-14 06:51:29,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:51:28" (2/3) ... [2022-12-14 06:51:29,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74be1cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:51:29, skipping insertion in model container [2022-12-14 06:51:29,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:51:29" (3/3) ... [2022-12-14 06:51:29,667 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.BOUNDED-8.pals.c.v+lhb-reducer.c [2022-12-14 06:51:29,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:51:29,681 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-12-14 06:51:29,722 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:51:29,726 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;@5dd54452, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:51:29,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-12-14 06:51:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 340 states, 327 states have (on average 1.8470948012232415) internal successors, (604), 339 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:29,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-12-14 06:51:29,740 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:29,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:29,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:29,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:29,745 INFO L85 PathProgramCache]: Analyzing trace with hash -972469851, now seen corresponding path program 1 times [2022-12-14 06:51:29,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:29,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533276260] [2022-12-14 06:51:29,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:29,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:30,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:30,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:30,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533276260] [2022-12-14 06:51:30,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533276260] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:30,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:30,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:51:30,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658991060] [2022-12-14 06:51:30,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:30,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:51:30,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:51:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:51:30,206 INFO L87 Difference]: Start difference. First operand has 340 states, 327 states have (on average 1.8470948012232415) internal successors, (604), 339 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:30,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:30,527 INFO L93 Difference]: Finished difference Result 533 states and 909 transitions. [2022-12-14 06:51:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:51:30,529 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-12-14 06:51:30,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:30,537 INFO L225 Difference]: With dead ends: 533 [2022-12-14 06:51:30,538 INFO L226 Difference]: Without dead ends: 285 [2022-12-14 06:51:30,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:51:30,543 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 1372 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:30,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 359 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:30,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-12-14 06:51:30,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2022-12-14 06:51:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 274 states have (on average 1.2554744525547445) internal successors, (344), 284 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 344 transitions. [2022-12-14 06:51:30,598 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 344 transitions. Word has length 58 [2022-12-14 06:51:30,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:30,599 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 344 transitions. [2022-12-14 06:51:30,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:30,599 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 344 transitions. [2022-12-14 06:51:30,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-14 06:51:30,601 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:30,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:30,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:51:30,602 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2110592992, now seen corresponding path program 1 times [2022-12-14 06:51:30,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:30,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806990413] [2022-12-14 06:51:30,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:30,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:30,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:30,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:30,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806990413] [2022-12-14 06:51:30,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806990413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:30,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:30,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:51:30,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350154500] [2022-12-14 06:51:30,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:30,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:51:30,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:30,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:51:30,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:51:30,721 INFO L87 Difference]: Start difference. First operand 285 states and 344 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:30,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:30,918 INFO L93 Difference]: Finished difference Result 471 states and 582 transitions. [2022-12-14 06:51:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:51:30,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-12-14 06:51:30,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:30,920 INFO L225 Difference]: With dead ends: 471 [2022-12-14 06:51:30,920 INFO L226 Difference]: Without dead ends: 265 [2022-12-14 06:51:30,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:51:30,921 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 884 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:30,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 192 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-12-14 06:51:30,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2022-12-14 06:51:30,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 254 states have (on average 1.2559055118110236) internal successors, (319), 264 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:30,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 319 transitions. [2022-12-14 06:51:30,934 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 319 transitions. Word has length 59 [2022-12-14 06:51:30,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:30,934 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 319 transitions. [2022-12-14 06:51:30,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:30,935 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 319 transitions. [2022-12-14 06:51:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-14 06:51:30,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:30,936 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:30,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:51:30,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:30,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:30,937 INFO L85 PathProgramCache]: Analyzing trace with hash -287578716, now seen corresponding path program 1 times [2022-12-14 06:51:30,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:30,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402672308] [2022-12-14 06:51:30,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:30,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:31,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:31,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:31,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402672308] [2022-12-14 06:51:31,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402672308] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:31,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:31,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:51:31,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126415676] [2022-12-14 06:51:31,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:31,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:51:31,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:31,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:51:31,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:51:31,055 INFO L87 Difference]: Start difference. First operand 265 states and 319 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:31,204 INFO L93 Difference]: Finished difference Result 451 states and 556 transitions. [2022-12-14 06:51:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:51:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-12-14 06:51:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:31,205 INFO L225 Difference]: With dead ends: 451 [2022-12-14 06:51:31,205 INFO L226 Difference]: Without dead ends: 243 [2022-12-14 06:51:31,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:51:31,207 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 836 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:31,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 180 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:51:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-12-14 06:51:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2022-12-14 06:51:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 232 states have (on average 1.2672413793103448) internal successors, (294), 242 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 294 transitions. [2022-12-14 06:51:31,218 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 294 transitions. Word has length 60 [2022-12-14 06:51:31,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:31,218 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 294 transitions. [2022-12-14 06:51:31,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:31,219 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 294 transitions. [2022-12-14 06:51:31,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-12-14 06:51:31,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:31,220 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] [2022-12-14 06:51:31,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:51:31,220 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:31,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:31,220 INFO L85 PathProgramCache]: Analyzing trace with hash -686799403, now seen corresponding path program 1 times [2022-12-14 06:51:31,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:31,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241462715] [2022-12-14 06:51:31,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:31,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:31,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:31,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241462715] [2022-12-14 06:51:31,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241462715] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:31,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:31,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 06:51:31,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715845639] [2022-12-14 06:51:31,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:31,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:51:31,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:31,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:51:31,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:51:31,300 INFO L87 Difference]: Start difference. First operand 243 states and 294 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:31,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:31,510 INFO L93 Difference]: Finished difference Result 546 states and 675 transitions. [2022-12-14 06:51:31,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:51:31,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-12-14 06:51:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:31,512 INFO L225 Difference]: With dead ends: 546 [2022-12-14 06:51:31,512 INFO L226 Difference]: Without dead ends: 346 [2022-12-14 06:51:31,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:51:31,514 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1038 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:31,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 263 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:31,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-12-14 06:51:31,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 304. [2022-12-14 06:51:31,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.3139931740614335) internal successors, (385), 303 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 385 transitions. [2022-12-14 06:51:31,539 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 385 transitions. Word has length 61 [2022-12-14 06:51:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:31,539 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 385 transitions. [2022-12-14 06:51:31,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 385 transitions. [2022-12-14 06:51:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 06:51:31,540 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:31,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:31,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:51:31,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:31,541 INFO L85 PathProgramCache]: Analyzing trace with hash -617130845, now seen corresponding path program 1 times [2022-12-14 06:51:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:31,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111556861] [2022-12-14 06:51:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:31,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:31,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:31,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111556861] [2022-12-14 06:51:31,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111556861] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:31,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:31,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 06:51:31,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234410523] [2022-12-14 06:51:31,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:31,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 06:51:31,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:31,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 06:51:31,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:51:31,902 INFO L87 Difference]: Start difference. First operand 304 states and 385 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:32,582 INFO L93 Difference]: Finished difference Result 716 states and 907 transitions. [2022-12-14 06:51:32,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 06:51:32,583 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 06:51:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:32,585 INFO L225 Difference]: With dead ends: 716 [2022-12-14 06:51:32,585 INFO L226 Difference]: Without dead ends: 639 [2022-12-14 06:51:32,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2022-12-14 06:51:32,586 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1516 mSDsluCounter, 932 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:32,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1121 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:51:32,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2022-12-14 06:51:32,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 311. [2022-12-14 06:51:32,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.3166666666666667) internal successors, (395), 310 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 395 transitions. [2022-12-14 06:51:32,608 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 395 transitions. Word has length 62 [2022-12-14 06:51:32,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:32,608 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 395 transitions. [2022-12-14 06:51:32,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:32,608 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 395 transitions. [2022-12-14 06:51:32,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 06:51:32,609 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:32,609 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:32,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:51:32,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:32,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:32,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1295066257, now seen corresponding path program 1 times [2022-12-14 06:51:32,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:32,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763448551] [2022-12-14 06:51:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:32,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:32,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:32,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:32,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763448551] [2022-12-14 06:51:32,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763448551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:32,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:32,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-14 06:51:32,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532000089] [2022-12-14 06:51:32,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:32,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-14 06:51:32,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:32,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-14 06:51:32,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:51:32,875 INFO L87 Difference]: Start difference. First operand 311 states and 395 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:33,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:33,581 INFO L93 Difference]: Finished difference Result 771 states and 982 transitions. [2022-12-14 06:51:33,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-14 06:51:33,581 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 06:51:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:33,583 INFO L225 Difference]: With dead ends: 771 [2022-12-14 06:51:33,583 INFO L226 Difference]: Without dead ends: 682 [2022-12-14 06:51:33,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-12-14 06:51:33,584 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1617 mSDsluCounter, 827 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:33,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 1029 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:51:33,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-12-14 06:51:33,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 311. [2022-12-14 06:51:33,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.3133333333333332) internal successors, (394), 310 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:33,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 394 transitions. [2022-12-14 06:51:33,611 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 394 transitions. Word has length 62 [2022-12-14 06:51:33,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:33,611 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 394 transitions. [2022-12-14 06:51:33,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:33,611 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 394 transitions. [2022-12-14 06:51:33,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 06:51:33,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:33,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:33,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 06:51:33,612 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:33,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:33,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1025976073, now seen corresponding path program 1 times [2022-12-14 06:51:33,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:33,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102965054] [2022-12-14 06:51:33,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:33,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:33,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:33,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:33,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102965054] [2022-12-14 06:51:33,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102965054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:33,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:33,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:33,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226673261] [2022-12-14 06:51:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:33,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:33,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:33,816 INFO L87 Difference]: Start difference. First operand 311 states and 394 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:34,418 INFO L93 Difference]: Finished difference Result 720 states and 926 transitions. [2022-12-14 06:51:34,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 06:51:34,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 06:51:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:34,420 INFO L225 Difference]: With dead ends: 720 [2022-12-14 06:51:34,420 INFO L226 Difference]: Without dead ends: 636 [2022-12-14 06:51:34,420 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 [2022-12-14 06:51:34,421 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 986 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:34,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1028 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:51:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-12-14 06:51:34,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 311. [2022-12-14 06:51:34,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.31) internal successors, (393), 310 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:34,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 393 transitions. [2022-12-14 06:51:34,450 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 393 transitions. Word has length 62 [2022-12-14 06:51:34,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:34,450 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 393 transitions. [2022-12-14 06:51:34,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 7 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:34,450 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 393 transitions. [2022-12-14 06:51:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-12-14 06:51:34,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:34,451 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] [2022-12-14 06:51:34,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:51:34,451 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:34,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:34,452 INFO L85 PathProgramCache]: Analyzing trace with hash 762232665, now seen corresponding path program 1 times [2022-12-14 06:51:34,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:34,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771420889] [2022-12-14 06:51:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:34,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:34,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:34,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771420889] [2022-12-14 06:51:34,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771420889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:34,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:34,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:51:34,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997703317] [2022-12-14 06:51:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:34,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:51:34,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:34,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:51:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:51:34,629 INFO L87 Difference]: Start difference. First operand 311 states and 393 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:34,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:34,946 INFO L93 Difference]: Finished difference Result 593 states and 734 transitions. [2022-12-14 06:51:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 06:51:34,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2022-12-14 06:51:34,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:34,947 INFO L225 Difference]: With dead ends: 593 [2022-12-14 06:51:34,947 INFO L226 Difference]: Without dead ends: 442 [2022-12-14 06:51:34,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:51:34,948 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1073 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:34,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 529 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:34,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-12-14 06:51:34,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 311. [2022-12-14 06:51:34,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 300 states have (on average 1.3066666666666666) internal successors, (392), 310 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:34,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 392 transitions. [2022-12-14 06:51:34,985 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 392 transitions. Word has length 62 [2022-12-14 06:51:34,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:34,985 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 392 transitions. [2022-12-14 06:51:34,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:34,985 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 392 transitions. [2022-12-14 06:51:34,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:51:34,986 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:34,986 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:34,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:51:34,986 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:34,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:34,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2079212864, now seen corresponding path program 1 times [2022-12-14 06:51:34,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:34,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525605973] [2022-12-14 06:51:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:34,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:35,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:35,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:35,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525605973] [2022-12-14 06:51:35,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525605973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:35,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:35,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893736103] [2022-12-14 06:51:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:35,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:35,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:35,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:35,155 INFO L87 Difference]: Start difference. First operand 311 states and 392 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:35,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:35,598 INFO L93 Difference]: Finished difference Result 490 states and 622 transitions. [2022-12-14 06:51:35,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:51:35,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:51:35,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:35,599 INFO L225 Difference]: With dead ends: 490 [2022-12-14 06:51:35,599 INFO L226 Difference]: Without dead ends: 384 [2022-12-14 06:51:35,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2022-12-14 06:51:35,600 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 1011 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:35,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 673 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:35,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-12-14 06:51:35,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 304. [2022-12-14 06:51:35,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.3037542662116042) internal successors, (382), 303 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:35,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 382 transitions. [2022-12-14 06:51:35,631 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 382 transitions. Word has length 64 [2022-12-14 06:51:35,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:35,631 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 382 transitions. [2022-12-14 06:51:35,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:35,632 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 382 transitions. [2022-12-14 06:51:35,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:51:35,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:35,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:35,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 06:51:35,633 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:35,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:35,633 INFO L85 PathProgramCache]: Analyzing trace with hash 350648810, now seen corresponding path program 1 times [2022-12-14 06:51:35,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:35,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044712368] [2022-12-14 06:51:35,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:35,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:35,813 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:35,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044712368] [2022-12-14 06:51:35,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044712368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:35,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:35,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:35,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129568655] [2022-12-14 06:51:35,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:35,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:35,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:35,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:35,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:35,814 INFO L87 Difference]: Start difference. First operand 304 states and 382 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:36,377 INFO L93 Difference]: Finished difference Result 686 states and 870 transitions. [2022-12-14 06:51:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 06:51:36,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:51:36,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:36,379 INFO L225 Difference]: With dead ends: 686 [2022-12-14 06:51:36,379 INFO L226 Difference]: Without dead ends: 609 [2022-12-14 06:51:36,380 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 [2022-12-14 06:51:36,380 INFO L413 NwaCegarLoop]: 213 mSDtfsCounter, 943 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:36,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 1047 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:51:36,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-12-14 06:51:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 304. [2022-12-14 06:51:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.3003412969283277) internal successors, (381), 303 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:36,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 381 transitions. [2022-12-14 06:51:36,439 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 381 transitions. Word has length 64 [2022-12-14 06:51:36,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:36,439 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 381 transitions. [2022-12-14 06:51:36,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 381 transitions. [2022-12-14 06:51:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:51:36,440 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:36,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:36,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 06:51:36,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:36,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:36,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2032121384, now seen corresponding path program 1 times [2022-12-14 06:51:36,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:36,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772215414] [2022-12-14 06:51:36,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:36,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:36,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:36,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772215414] [2022-12-14 06:51:36,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772215414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:36,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:36,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:36,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995936873] [2022-12-14 06:51:36,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:36,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:36,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:36,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:36,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:36,590 INFO L87 Difference]: Start difference. First operand 304 states and 381 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:37,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:37,127 INFO L93 Difference]: Finished difference Result 718 states and 917 transitions. [2022-12-14 06:51:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:51:37,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:51:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:37,130 INFO L225 Difference]: With dead ends: 718 [2022-12-14 06:51:37,130 INFO L226 Difference]: Without dead ends: 629 [2022-12-14 06:51:37,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 06:51:37,131 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 760 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 731 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 915 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:37,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 915 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 731 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:51:37,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-12-14 06:51:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 304. [2022-12-14 06:51:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2969283276450512) internal successors, (380), 303 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:37,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 380 transitions. [2022-12-14 06:51:37,169 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 380 transitions. Word has length 64 [2022-12-14 06:51:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:37,169 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 380 transitions. [2022-12-14 06:51:37,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 380 transitions. [2022-12-14 06:51:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:51:37,170 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:37,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:37,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 06:51:37,170 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:37,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:37,171 INFO L85 PathProgramCache]: Analyzing trace with hash 861544116, now seen corresponding path program 1 times [2022-12-14 06:51:37,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:37,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518323501] [2022-12-14 06:51:37,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:37,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:37,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:37,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518323501] [2022-12-14 06:51:37,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518323501] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:37,314 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:37,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:37,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767050960] [2022-12-14 06:51:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:37,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:37,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:37,315 INFO L87 Difference]: Start difference. First operand 304 states and 380 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:37,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:37,726 INFO L93 Difference]: Finished difference Result 683 states and 865 transitions. [2022-12-14 06:51:37,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:51:37,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:51:37,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:37,728 INFO L225 Difference]: With dead ends: 683 [2022-12-14 06:51:37,728 INFO L226 Difference]: Without dead ends: 609 [2022-12-14 06:51:37,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 06:51:37,729 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 775 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:37,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [775 Valid, 839 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:37,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-12-14 06:51:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 304. [2022-12-14 06:51:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2935153583617747) internal successors, (379), 303 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:37,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 379 transitions. [2022-12-14 06:51:37,798 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 379 transitions. Word has length 64 [2022-12-14 06:51:37,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:37,799 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 379 transitions. [2022-12-14 06:51:37,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:37,799 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 379 transitions. [2022-12-14 06:51:37,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:51:37,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:37,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:37,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 06:51:37,800 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:37,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:37,800 INFO L85 PathProgramCache]: Analyzing trace with hash -404487765, now seen corresponding path program 1 times [2022-12-14 06:51:37,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:37,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485736780] [2022-12-14 06:51:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:37,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:37,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:37,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:37,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485736780] [2022-12-14 06:51:37,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485736780] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:37,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:37,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:37,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78036615] [2022-12-14 06:51:37,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:37,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:37,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:37,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:37,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:37,938 INFO L87 Difference]: Start difference. First operand 304 states and 379 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:38,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:38,467 INFO L93 Difference]: Finished difference Result 614 states and 770 transitions. [2022-12-14 06:51:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:51:38,468 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:51:38,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:38,471 INFO L225 Difference]: With dead ends: 614 [2022-12-14 06:51:38,471 INFO L226 Difference]: Without dead ends: 609 [2022-12-14 06:51:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 06:51:38,472 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 1073 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:38,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 900 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:51:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-12-14 06:51:38,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 304. [2022-12-14 06:51:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2901023890784984) internal successors, (378), 303 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 378 transitions. [2022-12-14 06:51:38,513 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 378 transitions. Word has length 64 [2022-12-14 06:51:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:38,513 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 378 transitions. [2022-12-14 06:51:38,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:38,513 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 378 transitions. [2022-12-14 06:51:38,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:51:38,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:38,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:38,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 06:51:38,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:38,514 INFO L85 PathProgramCache]: Analyzing trace with hash 334726124, now seen corresponding path program 1 times [2022-12-14 06:51:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:38,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621274178] [2022-12-14 06:51:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:38,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:38,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:38,654 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:38,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621274178] [2022-12-14 06:51:38,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621274178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:38,654 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:38,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:38,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161907827] [2022-12-14 06:51:38,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:38,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:38,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:38,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:38,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:38,656 INFO L87 Difference]: Start difference. First operand 304 states and 378 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:39,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:39,091 INFO L93 Difference]: Finished difference Result 520 states and 658 transitions. [2022-12-14 06:51:39,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 06:51:39,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:51:39,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:39,093 INFO L225 Difference]: With dead ends: 520 [2022-12-14 06:51:39,093 INFO L226 Difference]: Without dead ends: 384 [2022-12-14 06:51:39,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2022-12-14 06:51:39,094 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 947 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:39,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 755 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:39,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-12-14 06:51:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 304. [2022-12-14 06:51:39,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2832764505119454) internal successors, (376), 303 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:39,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 376 transitions. [2022-12-14 06:51:39,136 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 376 transitions. Word has length 64 [2022-12-14 06:51:39,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:39,136 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 376 transitions. [2022-12-14 06:51:39,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:39,136 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 376 transitions. [2022-12-14 06:51:39,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:51:39,136 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:39,137 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:39,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 06:51:39,137 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:39,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1265909968, now seen corresponding path program 1 times [2022-12-14 06:51:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:39,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256873111] [2022-12-14 06:51:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:39,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:39,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:39,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256873111] [2022-12-14 06:51:39,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256873111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:39,319 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:39,319 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178494509] [2022-12-14 06:51:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:39,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:39,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:39,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:39,321 INFO L87 Difference]: Start difference. First operand 304 states and 376 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:39,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:39,904 INFO L93 Difference]: Finished difference Result 614 states and 766 transitions. [2022-12-14 06:51:39,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 06:51:39,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:51:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:39,905 INFO L225 Difference]: With dead ends: 614 [2022-12-14 06:51:39,905 INFO L226 Difference]: Without dead ends: 609 [2022-12-14 06:51:39,905 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 [2022-12-14 06:51:39,906 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 924 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 924 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:39,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [924 Valid, 1157 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:51:39,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-12-14 06:51:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 304. [2022-12-14 06:51:39,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2764505119453924) internal successors, (374), 303 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 374 transitions. [2022-12-14 06:51:39,949 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 374 transitions. Word has length 64 [2022-12-14 06:51:39,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:39,950 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 374 transitions. [2022-12-14 06:51:39,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 374 transitions. [2022-12-14 06:51:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-12-14 06:51:39,950 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:39,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:39,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 06:51:39,951 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:39,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash 646287134, now seen corresponding path program 1 times [2022-12-14 06:51:39,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:39,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595748178] [2022-12-14 06:51:39,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:39,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:40,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:40,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595748178] [2022-12-14 06:51:40,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595748178] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:40,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:40,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:40,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874760449] [2022-12-14 06:51:40,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:40,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:40,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:40,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:40,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:40,075 INFO L87 Difference]: Start difference. First operand 304 states and 374 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:40,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:40,600 INFO L93 Difference]: Finished difference Result 646 states and 812 transitions. [2022-12-14 06:51:40,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:51:40,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-12-14 06:51:40,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:40,602 INFO L225 Difference]: With dead ends: 646 [2022-12-14 06:51:40,602 INFO L226 Difference]: Without dead ends: 629 [2022-12-14 06:51:40,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2022-12-14 06:51:40,603 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 946 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:40,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [946 Valid, 1103 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:51:40,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2022-12-14 06:51:40,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 304. [2022-12-14 06:51:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 293 states have (on average 1.2696245733788396) internal successors, (372), 303 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 372 transitions. [2022-12-14 06:51:40,649 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 372 transitions. Word has length 64 [2022-12-14 06:51:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:40,649 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 372 transitions. [2022-12-14 06:51:40,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 372 transitions. [2022-12-14 06:51:40,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 06:51:40,651 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:40,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:40,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-14 06:51:40,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:40,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:40,652 INFO L85 PathProgramCache]: Analyzing trace with hash 107558087, now seen corresponding path program 1 times [2022-12-14 06:51:40,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:40,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354093423] [2022-12-14 06:51:40,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:40,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:41,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:41,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:41,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354093423] [2022-12-14 06:51:41,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354093423] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:41,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:41,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-12-14 06:51:41,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119010446] [2022-12-14 06:51:41,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:41,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-14 06:51:41,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:41,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-14 06:51:41,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2022-12-14 06:51:41,543 INFO L87 Difference]: Start difference. First operand 304 states and 372 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:44,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:44,158 INFO L93 Difference]: Finished difference Result 717 states and 870 transitions. [2022-12-14 06:51:44,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-14 06:51:44,158 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-14 06:51:44,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:44,159 INFO L225 Difference]: With dead ends: 717 [2022-12-14 06:51:44,160 INFO L226 Difference]: Without dead ends: 641 [2022-12-14 06:51:44,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=342, Invalid=1550, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 06:51:44,160 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1473 mSDsluCounter, 4826 mSDsCounter, 0 mSdLazyCounter, 2545 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 5228 SdHoareTripleChecker+Invalid, 2548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:44,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 5228 Invalid, 2548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2545 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 06:51:44,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2022-12-14 06:51:44,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 315. [2022-12-14 06:51:44,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 304 states have (on average 1.269736842105263) internal successors, (386), 314 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:44,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 386 transitions. [2022-12-14 06:51:44,222 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 386 transitions. Word has length 66 [2022-12-14 06:51:44,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:44,222 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 386 transitions. [2022-12-14 06:51:44,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 23 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:44,222 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 386 transitions. [2022-12-14 06:51:44,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 06:51:44,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:44,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:44,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-14 06:51:44,223 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:44,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:44,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1672959061, now seen corresponding path program 1 times [2022-12-14 06:51:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:44,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636833384] [2022-12-14 06:51:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:44,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:44,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:44,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636833384] [2022-12-14 06:51:44,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636833384] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:44,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:44,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-14 06:51:44,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015262062] [2022-12-14 06:51:44,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:44,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-14 06:51:44,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:44,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-14 06:51:44,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-14 06:51:44,528 INFO L87 Difference]: Start difference. First operand 315 states and 386 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:45,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:45,068 INFO L93 Difference]: Finished difference Result 631 states and 765 transitions. [2022-12-14 06:51:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 06:51:45,069 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-14 06:51:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:45,070 INFO L225 Difference]: With dead ends: 631 [2022-12-14 06:51:45,070 INFO L226 Difference]: Without dead ends: 485 [2022-12-14 06:51:45,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2022-12-14 06:51:45,071 INFO L413 NwaCegarLoop]: 307 mSDtfsCounter, 1406 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:45,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 945 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:45,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2022-12-14 06:51:45,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 241. [2022-12-14 06:51:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 234 states have (on average 1.2606837606837606) internal successors, (295), 240 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:45,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 295 transitions. [2022-12-14 06:51:45,129 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 295 transitions. Word has length 66 [2022-12-14 06:51:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:45,129 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 295 transitions. [2022-12-14 06:51:45,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 295 transitions. [2022-12-14 06:51:45,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 06:51:45,130 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:45,130 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:45,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-14 06:51:45,130 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:45,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:45,131 INFO L85 PathProgramCache]: Analyzing trace with hash 89242274, now seen corresponding path program 1 times [2022-12-14 06:51:45,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:45,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333977619] [2022-12-14 06:51:45,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:45,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:45,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:45,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:45,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:45,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333977619] [2022-12-14 06:51:45,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333977619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:45,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:45,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 06:51:45,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107175088] [2022-12-14 06:51:45,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:45,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:51:45,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:45,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:51:45,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:51:45,468 INFO L87 Difference]: Start difference. First operand 241 states and 295 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:46,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:46,181 INFO L93 Difference]: Finished difference Result 644 states and 795 transitions. [2022-12-14 06:51:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:51:46,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-14 06:51:46,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:46,183 INFO L225 Difference]: With dead ends: 644 [2022-12-14 06:51:46,183 INFO L226 Difference]: Without dead ends: 566 [2022-12-14 06:51:46,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2022-12-14 06:51:46,184 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 1080 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:46,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 1367 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:46,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-12-14 06:51:46,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 231. [2022-12-14 06:51:46,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 225 states have (on average 1.2444444444444445) internal successors, (280), 230 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:46,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 280 transitions. [2022-12-14 06:51:46,247 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 280 transitions. Word has length 66 [2022-12-14 06:51:46,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:46,247 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 280 transitions. [2022-12-14 06:51:46,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:46,247 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 280 transitions. [2022-12-14 06:51:46,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-14 06:51:46,248 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:46,248 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] [2022-12-14 06:51:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-14 06:51:46,248 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:46,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1372728877, now seen corresponding path program 1 times [2022-12-14 06:51:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:46,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496079991] [2022-12-14 06:51:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:46,565 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:46,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496079991] [2022-12-14 06:51:46,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496079991] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:46,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:46,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 06:51:46,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468300973] [2022-12-14 06:51:46,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:46,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:51:46,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:46,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:51:46,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:51:46,567 INFO L87 Difference]: Start difference. First operand 231 states and 280 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:47,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:47,166 INFO L93 Difference]: Finished difference Result 503 states and 636 transitions. [2022-12-14 06:51:47,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 06:51:47,166 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-12-14 06:51:47,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:47,167 INFO L225 Difference]: With dead ends: 503 [2022-12-14 06:51:47,167 INFO L226 Difference]: Without dead ends: 389 [2022-12-14 06:51:47,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2022-12-14 06:51:47,168 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 597 mSDsluCounter, 1673 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:47,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1910 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:47,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-12-14 06:51:47,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 189. [2022-12-14 06:51:47,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.2258064516129032) internal successors, (228), 188 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 228 transitions. [2022-12-14 06:51:47,231 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 228 transitions. Word has length 66 [2022-12-14 06:51:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:47,231 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 228 transitions. [2022-12-14 06:51:47,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 12 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 228 transitions. [2022-12-14 06:51:47,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 06:51:47,232 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:47,232 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:47,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-14 06:51:47,232 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:47,232 INFO L85 PathProgramCache]: Analyzing trace with hash -812946096, now seen corresponding path program 1 times [2022-12-14 06:51:47,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:47,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998072265] [2022-12-14 06:51:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:47,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:47,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:47,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998072265] [2022-12-14 06:51:47,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998072265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:47,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:47,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:47,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705792876] [2022-12-14 06:51:47,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:47,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:47,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:47,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:47,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:47,414 INFO L87 Difference]: Start difference. First operand 189 states and 228 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:47,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:47,739 INFO L93 Difference]: Finished difference Result 304 states and 371 transitions. [2022-12-14 06:51:47,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 06:51:47,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-14 06:51:47,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:47,740 INFO L225 Difference]: With dead ends: 304 [2022-12-14 06:51:47,740 INFO L226 Difference]: Without dead ends: 297 [2022-12-14 06:51:47,741 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 [2022-12-14 06:51:47,741 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 451 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:47,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 497 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:51:47,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-12-14 06:51:47,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 189. [2022-12-14 06:51:47,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.2204301075268817) internal successors, (227), 188 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:47,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 227 transitions. [2022-12-14 06:51:47,805 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 227 transitions. Word has length 67 [2022-12-14 06:51:47,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:47,805 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 227 transitions. [2022-12-14 06:51:47,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:47,805 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 227 transitions. [2022-12-14 06:51:47,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-12-14 06:51:47,805 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:47,805 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:47,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-14 06:51:47,806 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:47,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:47,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1116116258, now seen corresponding path program 1 times [2022-12-14 06:51:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:47,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819142909] [2022-12-14 06:51:47,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:47,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:47,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:47,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:47,912 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:47,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819142909] [2022-12-14 06:51:47,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819142909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:47,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:47,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:51:47,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974675573] [2022-12-14 06:51:47,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:47,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:51:47,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:47,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:51:47,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:51:47,913 INFO L87 Difference]: Start difference. First operand 189 states and 227 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:48,294 INFO L93 Difference]: Finished difference Result 423 states and 525 transitions. [2022-12-14 06:51:48,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-14 06:51:48,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-12-14 06:51:48,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:48,295 INFO L225 Difference]: With dead ends: 423 [2022-12-14 06:51:48,295 INFO L226 Difference]: Without dead ends: 321 [2022-12-14 06:51:48,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2022-12-14 06:51:48,296 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 530 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:48,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 451 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:51:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-12-14 06:51:48,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 189. [2022-12-14 06:51:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 186 states have (on average 1.2096774193548387) internal successors, (225), 188 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 225 transitions. [2022-12-14 06:51:48,362 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 225 transitions. Word has length 67 [2022-12-14 06:51:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:48,363 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 225 transitions. [2022-12-14 06:51:48,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 225 transitions. [2022-12-14 06:51:48,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 06:51:48,363 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:48,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:48,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-14 06:51:48,363 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:48,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:48,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1523699975, now seen corresponding path program 1 times [2022-12-14 06:51:48,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:48,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833999171] [2022-12-14 06:51:48,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:48,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:48,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:48,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833999171] [2022-12-14 06:51:48,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833999171] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:48,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:48,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-12-14 06:51:48,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905181659] [2022-12-14 06:51:48,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:48,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-14 06:51:48,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-14 06:51:48,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-12-14 06:51:48,977 INFO L87 Difference]: Start difference. First operand 189 states and 225 transitions. Second operand has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:50,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:50,964 INFO L93 Difference]: Finished difference Result 830 states and 1053 transitions. [2022-12-14 06:51:50,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-14 06:51:50,965 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-14 06:51:50,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:50,966 INFO L225 Difference]: With dead ends: 830 [2022-12-14 06:51:50,966 INFO L226 Difference]: Without dead ends: 824 [2022-12-14 06:51:50,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=266, Invalid=924, Unknown=0, NotChecked=0, Total=1190 [2022-12-14 06:51:50,967 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 1063 mSDsluCounter, 3113 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 1095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:50,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 3431 Invalid, 1095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:51:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-12-14 06:51:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 195. [2022-12-14 06:51:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.2135416666666667) internal successors, (233), 194 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 233 transitions. [2022-12-14 06:51:51,047 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 233 transitions. Word has length 69 [2022-12-14 06:51:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:51,047 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 233 transitions. [2022-12-14 06:51:51,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.8333333333333335) internal successors, (69), 17 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:51,047 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 233 transitions. [2022-12-14 06:51:51,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-12-14 06:51:51,047 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:51,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:51,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-14 06:51:51,048 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:51,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:51,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1858906752, now seen corresponding path program 1 times [2022-12-14 06:51:51,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:51,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402063769] [2022-12-14 06:51:51,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:51,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:51,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:51,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:51,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402063769] [2022-12-14 06:51:51,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402063769] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:51,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:51,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-12-14 06:51:51,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465331063] [2022-12-14 06:51:51,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:51,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 06:51:51,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:51,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 06:51:51,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=444, Unknown=0, NotChecked=0, Total=506 [2022-12-14 06:51:51,784 INFO L87 Difference]: Start difference. First operand 195 states and 233 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:53,269 INFO L93 Difference]: Finished difference Result 325 states and 390 transitions. [2022-12-14 06:51:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-14 06:51:53,270 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-12-14 06:51:53,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:53,271 INFO L225 Difference]: With dead ends: 325 [2022-12-14 06:51:53,271 INFO L226 Difference]: Without dead ends: 317 [2022-12-14 06:51:53,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=290, Invalid=1432, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 06:51:53,272 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 394 mSDsluCounter, 2203 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:53,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 2376 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-14 06:51:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-12-14 06:51:53,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 204. [2022-12-14 06:51:53,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 201 states have (on average 1.2139303482587065) internal successors, (244), 203 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:53,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 244 transitions. [2022-12-14 06:51:53,354 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 244 transitions. Word has length 69 [2022-12-14 06:51:53,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:53,354 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 244 transitions. [2022-12-14 06:51:53,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 22 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:53,355 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 244 transitions. [2022-12-14 06:51:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 06:51:53,355 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:53,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:53,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-14 06:51:53,355 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash -327269785, now seen corresponding path program 1 times [2022-12-14 06:51:53,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:53,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413141542] [2022-12-14 06:51:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:53,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:53,697 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:53,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413141542] [2022-12-14 06:51:53,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413141542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:53,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:53,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 06:51:53,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767897542] [2022-12-14 06:51:53,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:53,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:51:53,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:53,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:51:53,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:51:53,699 INFO L87 Difference]: Start difference. First operand 204 states and 244 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:55,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:55,111 INFO L93 Difference]: Finished difference Result 788 states and 998 transitions. [2022-12-14 06:51:55,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-14 06:51:55,112 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-14 06:51:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:55,113 INFO L225 Difference]: With dead ends: 788 [2022-12-14 06:51:55,113 INFO L226 Difference]: Without dead ends: 782 [2022-12-14 06:51:55,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-12-14 06:51:55,114 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 843 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:55,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1990 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 06:51:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-12-14 06:51:55,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 192. [2022-12-14 06:51:55,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 1.2052631578947368) internal successors, (229), 191 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:55,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 229 transitions. [2022-12-14 06:51:55,198 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 229 transitions. Word has length 70 [2022-12-14 06:51:55,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:55,198 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 229 transitions. [2022-12-14 06:51:55,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:55,198 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 229 transitions. [2022-12-14 06:51:55,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-12-14 06:51:55,198 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:55,199 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:55,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-14 06:51:55,199 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:55,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash 7936992, now seen corresponding path program 1 times [2022-12-14 06:51:55,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:55,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314950281] [2022-12-14 06:51:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:55,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:55,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:55,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314950281] [2022-12-14 06:51:55,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314950281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:55,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:55,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-14 06:51:55,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304929511] [2022-12-14 06:51:55,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:55,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:51:55,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:55,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:51:55,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:51:55,512 INFO L87 Difference]: Start difference. First operand 192 states and 229 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:56,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:56,569 INFO L93 Difference]: Finished difference Result 636 states and 807 transitions. [2022-12-14 06:51:56,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-14 06:51:56,569 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-12-14 06:51:56,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:56,571 INFO L225 Difference]: With dead ends: 636 [2022-12-14 06:51:56,571 INFO L226 Difference]: Without dead ends: 621 [2022-12-14 06:51:56,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-12-14 06:51:56,571 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 818 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:56,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 1850 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:51:56,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-12-14 06:51:56,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 171. [2022-12-14 06:51:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.2) internal successors, (204), 170 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:56,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 204 transitions. [2022-12-14 06:51:56,661 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 204 transitions. Word has length 70 [2022-12-14 06:51:56,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:56,661 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 204 transitions. [2022-12-14 06:51:56,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 204 transitions. [2022-12-14 06:51:56,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 06:51:56,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:56,662 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] [2022-12-14 06:51:56,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-14 06:51:56,662 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:56,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:56,662 INFO L85 PathProgramCache]: Analyzing trace with hash -646385871, now seen corresponding path program 1 times [2022-12-14 06:51:56,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:56,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649663894] [2022-12-14 06:51:56,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:56,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:56,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:56,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649663894] [2022-12-14 06:51:56,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649663894] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:56,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:56,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:51:56,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201189737] [2022-12-14 06:51:56,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:56,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:51:56,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:51:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:56,727 INFO L87 Difference]: Start difference. First operand 171 states and 204 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:56,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:56,917 INFO L93 Difference]: Finished difference Result 252 states and 311 transitions. [2022-12-14 06:51:56,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:51:56,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-12-14 06:51:56,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:56,918 INFO L225 Difference]: With dead ends: 252 [2022-12-14 06:51:56,918 INFO L226 Difference]: Without dead ends: 215 [2022-12-14 06:51:56,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:56,919 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 54 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:56,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 246 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:51:56,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-12-14 06:51:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 205. [2022-12-14 06:51:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.2156862745098038) internal successors, (248), 204 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:57,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 248 transitions. [2022-12-14 06:51:57,050 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 248 transitions. Word has length 84 [2022-12-14 06:51:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:57,051 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 248 transitions. [2022-12-14 06:51:57,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 248 transitions. [2022-12-14 06:51:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-14 06:51:57,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:57,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:57,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-14 06:51:57,052 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1526245917, now seen corresponding path program 1 times [2022-12-14 06:51:57,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:57,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613413989] [2022-12-14 06:51:57,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:57,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:57,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:57,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:57,105 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:57,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613413989] [2022-12-14 06:51:57,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613413989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:57,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:57,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:51:57,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599637610] [2022-12-14 06:51:57,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:57,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:51:57,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:57,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:51:57,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:57,106 INFO L87 Difference]: Start difference. First operand 205 states and 248 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:57,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:57,355 INFO L93 Difference]: Finished difference Result 411 states and 522 transitions. [2022-12-14 06:51:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:51:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-12-14 06:51:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:57,357 INFO L225 Difference]: With dead ends: 411 [2022-12-14 06:51:57,357 INFO L226 Difference]: Without dead ends: 308 [2022-12-14 06:51:57,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:57,357 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 47 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:57,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 246 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:51:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-12-14 06:51:57,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 294. [2022-12-14 06:51:57,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 1.2491467576791808) internal successors, (366), 293 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:57,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 366 transitions. [2022-12-14 06:51:57,571 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 366 transitions. Word has length 87 [2022-12-14 06:51:57,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:57,571 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 366 transitions. [2022-12-14 06:51:57,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:57,572 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 366 transitions. [2022-12-14 06:51:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 06:51:57,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:57,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:51:57,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-14 06:51:57,573 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:57,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:57,573 INFO L85 PathProgramCache]: Analyzing trace with hash 445440857, now seen corresponding path program 1 times [2022-12-14 06:51:57,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:57,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21022565] [2022-12-14 06:51:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:57,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:57,627 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:57,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21022565] [2022-12-14 06:51:57,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21022565] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:57,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:57,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:51:57,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078723230] [2022-12-14 06:51:57,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:57,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:51:57,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:51:57,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:57,629 INFO L87 Difference]: Start difference. First operand 294 states and 366 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:58,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:58,060 INFO L93 Difference]: Finished difference Result 678 states and 876 transitions. [2022-12-14 06:51:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:51:58,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-12-14 06:51:58,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:58,062 INFO L225 Difference]: With dead ends: 678 [2022-12-14 06:51:58,062 INFO L226 Difference]: Without dead ends: 486 [2022-12-14 06:51:58,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:58,063 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 40 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:58,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 246 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:51:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-12-14 06:51:58,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 460. [2022-12-14 06:51:58,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 459 states have (on average 1.2723311546840959) internal successors, (584), 459 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:58,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 584 transitions. [2022-12-14 06:51:58,450 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 584 transitions. Word has length 90 [2022-12-14 06:51:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:51:58,450 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 584 transitions. [2022-12-14 06:51:58,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:58,450 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 584 transitions. [2022-12-14 06:51:58,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 06:51:58,451 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:51:58,451 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] [2022-12-14 06:51:58,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-14 06:51:58,451 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:51:58,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:51:58,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1365580448, now seen corresponding path program 1 times [2022-12-14 06:51:58,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:51:58,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141220925] [2022-12-14 06:51:58,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:51:58,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:51:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:51:58,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:51:58,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:51:58,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141220925] [2022-12-14 06:51:58,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141220925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:51:58,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:51:58,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:51:58,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288782501] [2022-12-14 06:51:58,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:51:58,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:51:58,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:51:58,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:51:58,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:58,512 INFO L87 Difference]: Start difference. First operand 460 states and 584 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:51:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:51:59,283 INFO L93 Difference]: Finished difference Result 1176 states and 1530 transitions. [2022-12-14 06:51:59,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:51:59,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-12-14 06:51:59,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:51:59,286 INFO L225 Difference]: With dead ends: 1176 [2022-12-14 06:51:59,286 INFO L226 Difference]: Without dead ends: 818 [2022-12-14 06:51:59,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:51:59,287 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 30 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:51:59,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 246 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:51:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-12-14 06:52:00,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 768. [2022-12-14 06:52:00,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 767 states have (on average 1.2829204693611473) internal successors, (984), 767 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 984 transitions. [2022-12-14 06:52:00,002 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 984 transitions. Word has length 93 [2022-12-14 06:52:00,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:00,002 INFO L495 AbstractCegarLoop]: Abstraction has 768 states and 984 transitions. [2022-12-14 06:52:00,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:00,002 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 984 transitions. [2022-12-14 06:52:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 06:52:00,003 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:00,003 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] [2022-12-14 06:52:00,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-14 06:52:00,003 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:52:00,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:00,003 INFO L85 PathProgramCache]: Analyzing trace with hash 795640899, now seen corresponding path program 1 times [2022-12-14 06:52:00,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:00,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70103533] [2022-12-14 06:52:00,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:00,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:00,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:52:00,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:00,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70103533] [2022-12-14 06:52:00,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70103533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:00,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:52:00,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:52:00,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366556024] [2022-12-14 06:52:00,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:00,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:52:00,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:00,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:52:00,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:52:00,066 INFO L87 Difference]: Start difference. First operand 768 states and 984 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:02,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:02,664 INFO L93 Difference]: Finished difference Result 2946 states and 3826 transitions. [2022-12-14 06:52:02,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:52:02,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-12-14 06:52:02,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:02,669 INFO L225 Difference]: With dead ends: 2946 [2022-12-14 06:52:02,669 INFO L226 Difference]: Without dead ends: 2280 [2022-12-14 06:52:02,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-14 06:52:02,670 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 534 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:02,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 798 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:52:02,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2022-12-14 06:52:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 1146. [2022-12-14 06:52:03,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.273362445414847) internal successors, (1458), 1145 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:03,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1458 transitions. [2022-12-14 06:52:03,881 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1458 transitions. Word has length 96 [2022-12-14 06:52:03,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:03,881 INFO L495 AbstractCegarLoop]: Abstraction has 1146 states and 1458 transitions. [2022-12-14 06:52:03,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:03,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1458 transitions. [2022-12-14 06:52:03,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 06:52:03,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:03,882 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] [2022-12-14 06:52:03,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-12-14 06:52:03,882 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:52:03,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:03,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1184955644, now seen corresponding path program 1 times [2022-12-14 06:52:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:03,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762429499] [2022-12-14 06:52:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:03,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:04,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:52:04,015 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:04,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762429499] [2022-12-14 06:52:04,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762429499] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:04,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:52:04,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:52:04,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733549975] [2022-12-14 06:52:04,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:04,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:52:04,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:04,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:52:04,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:52:04,017 INFO L87 Difference]: Start difference. First operand 1146 states and 1458 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2022-12-14 06:52:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:05,278 INFO L93 Difference]: Finished difference Result 2192 states and 2806 transitions. [2022-12-14 06:52:05,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:52:05,279 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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 [2022-12-14 06:52:05,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:05,281 INFO L225 Difference]: With dead ends: 2192 [2022-12-14 06:52:05,281 INFO L226 Difference]: Without dead ends: 1148 [2022-12-14 06:52:05,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:52:05,283 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 41 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:05,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 304 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:52:05,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2022-12-14 06:52:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1146. [2022-12-14 06:52:06,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 1145 states have (on average 1.2716157205240175) internal successors, (1456), 1145 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1456 transitions. [2022-12-14 06:52:06,437 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1456 transitions. Word has length 98 [2022-12-14 06:52:06,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:06,438 INFO L495 AbstractCegarLoop]: Abstraction has 1146 states and 1456 transitions. [2022-12-14 06:52:06,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 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) [2022-12-14 06:52:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1456 transitions. [2022-12-14 06:52:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 06:52:06,438 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:06,438 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] [2022-12-14 06:52:06,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-12-14 06:52:06,438 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:52:06,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:06,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1954248637, now seen corresponding path program 1 times [2022-12-14 06:52:06,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:06,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304901091] [2022-12-14 06:52:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:06,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:06,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:52:06,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:06,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304901091] [2022-12-14 06:52:06,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304901091] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:06,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:52:06,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 06:52:06,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809094500] [2022-12-14 06:52:06,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:06,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 06:52:06,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:06,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 06:52:06,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:52:06,470 INFO L87 Difference]: Start difference. First operand 1146 states and 1456 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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) [2022-12-14 06:52:07,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:07,924 INFO L93 Difference]: Finished difference Result 2456 states and 3146 transitions. [2022-12-14 06:52:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 06:52:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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 [2022-12-14 06:52:07,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:07,927 INFO L225 Difference]: With dead ends: 2456 [2022-12-14 06:52:07,927 INFO L226 Difference]: Without dead ends: 1412 [2022-12-14 06:52:07,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 06:52:07,928 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 66 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:07,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 187 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 06:52:07,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2022-12-14 06:52:09,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1410. [2022-12-14 06:52:09,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1409 states have (on average 1.2647267565649396) internal successors, (1782), 1409 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:09,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 1782 transitions. [2022-12-14 06:52:09,362 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 1782 transitions. Word has length 98 [2022-12-14 06:52:09,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:09,362 INFO L495 AbstractCegarLoop]: Abstraction has 1410 states and 1782 transitions. [2022-12-14 06:52:09,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 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) [2022-12-14 06:52:09,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 1782 transitions. [2022-12-14 06:52:09,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 06:52:09,363 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:09,363 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] [2022-12-14 06:52:09,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-12-14 06:52:09,363 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:52:09,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1861913153, now seen corresponding path program 1 times [2022-12-14 06:52:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:09,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665889570] [2022-12-14 06:52:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:09,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:09,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:52:09,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:09,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665889570] [2022-12-14 06:52:09,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665889570] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:09,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:52:09,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:52:09,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158494713] [2022-12-14 06:52:09,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:09,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:52:09,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:09,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:52:09,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:52:09,476 INFO L87 Difference]: Start difference. First operand 1410 states and 1782 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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) [2022-12-14 06:52:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:11,849 INFO L93 Difference]: Finished difference Result 2122 states and 2654 transitions. [2022-12-14 06:52:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-14 06:52:11,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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 [2022-12-14 06:52:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:11,853 INFO L225 Difference]: With dead ends: 2122 [2022-12-14 06:52:11,853 INFO L226 Difference]: Without dead ends: 2120 [2022-12-14 06:52:11,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-12-14 06:52:11,853 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 168 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:11,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 626 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 06:52:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2022-12-14 06:52:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 1458. [2022-12-14 06:52:13,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 1.2395332875772134) internal successors, (1806), 1457 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:13,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1806 transitions. [2022-12-14 06:52:13,382 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1806 transitions. Word has length 99 [2022-12-14 06:52:13,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:13,382 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1806 transitions. [2022-12-14 06:52:13,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 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) [2022-12-14 06:52:13,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1806 transitions. [2022-12-14 06:52:13,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 06:52:13,383 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:13,383 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:52:13,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-12-14 06:52:13,384 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:52:13,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:13,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1051043977, now seen corresponding path program 1 times [2022-12-14 06:52:13,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:13,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909909245] [2022-12-14 06:52:13,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:13,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:16,681 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:52:16,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:16,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909909245] [2022-12-14 06:52:16,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909909245] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:52:16,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11477461] [2022-12-14 06:52:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:16,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:52:16,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:52:16,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:52:16,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:52:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:16,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 06:52:16,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:52:17,480 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 06:52:17,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:52:17,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11477461] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:17,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:52:17,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [35] total 41 [2022-12-14 06:52:17,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644135031] [2022-12-14 06:52:17,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:17,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:52:17,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:52:17,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1592, Unknown=0, NotChecked=0, Total=1722 [2022-12-14 06:52:17,482 INFO L87 Difference]: Start difference. First operand 1458 states and 1806 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:20,666 INFO L93 Difference]: Finished difference Result 3617 states and 4504 transitions. [2022-12-14 06:52:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 06:52:20,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 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 115 [2022-12-14 06:52:20,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:20,671 INFO L225 Difference]: With dead ends: 3617 [2022-12-14 06:52:20,671 INFO L226 Difference]: Without dead ends: 2246 [2022-12-14 06:52:20,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=194, Invalid=2356, Unknown=0, NotChecked=0, Total=2550 [2022-12-14 06:52:20,673 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 318 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:20,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 346 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 06:52:20,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2246 states. [2022-12-14 06:52:22,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2246 to 1458. [2022-12-14 06:52:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1457 states have (on average 1.2381606039807824) internal successors, (1804), 1457 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:22,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1804 transitions. [2022-12-14 06:52:22,303 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1804 transitions. Word has length 115 [2022-12-14 06:52:22,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:22,303 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1804 transitions. [2022-12-14 06:52:22,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 7 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:22,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1804 transitions. [2022-12-14 06:52:22,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 06:52:22,304 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:22,304 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:52:22,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:52:22,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:52:22,506 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:52:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash 859583932, now seen corresponding path program 1 times [2022-12-14 06:52:22,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:22,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794759459] [2022-12-14 06:52:22,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:22,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 06:52:23,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:23,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794759459] [2022-12-14 06:52:23,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794759459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:52:23,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:52:23,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-12-14 06:52:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361678271] [2022-12-14 06:52:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:52:23,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-14 06:52:23,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:52:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-14 06:52:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-12-14 06:52:23,196 INFO L87 Difference]: Start difference. First operand 1458 states and 1804 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:27,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:52:27,327 INFO L93 Difference]: Finished difference Result 4207 states and 5233 transitions. [2022-12-14 06:52:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-14 06:52:27,328 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2022-12-14 06:52:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:52:27,333 INFO L225 Difference]: With dead ends: 4207 [2022-12-14 06:52:27,333 INFO L226 Difference]: Without dead ends: 2841 [2022-12-14 06:52:27,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=245, Invalid=1161, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 06:52:27,335 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 384 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1820 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:52:27,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1820 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:52:27,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2841 states. [2022-12-14 06:52:28,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2841 to 1468. [2022-12-14 06:52:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1467 states have (on average 1.2372188139059306) internal successors, (1815), 1467 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 1815 transitions. [2022-12-14 06:52:28,993 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 1815 transitions. Word has length 117 [2022-12-14 06:52:28,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:52:28,993 INFO L495 AbstractCegarLoop]: Abstraction has 1468 states and 1815 transitions. [2022-12-14 06:52:28,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 06:52:28,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 1815 transitions. [2022-12-14 06:52:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-14 06:52:28,994 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:52:28,994 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 06:52:28,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-12-14 06:52:28,994 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2022-12-14 06:52:28,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:52:28,994 INFO L85 PathProgramCache]: Analyzing trace with hash -847485156, now seen corresponding path program 1 times [2022-12-14 06:52:28,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:52:28,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37216885] [2022-12-14 06:52:28,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:28,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:52:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:52:32,578 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:52:32,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37216885] [2022-12-14 06:52:32,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37216885] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:52:32,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353926560] [2022-12-14 06:52:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:52:32,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:52:32,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:52:32,580 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:52:32,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01107acb-b9aa-4b17-8f17-1a70c90de21e/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:52:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:52:32,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 79 conjunts are in the unsatisfiable core [2022-12-14 06:52:32,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:52:42,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 06:52:42,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 07:05:03,379 WARN L233 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 517 DAG size of output: 477 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)