./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7 --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 a7fe14b036c76813552f56a0b0f6fa4a7e816ada4aa4a291eafd4277fae7b99b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 17:51:53,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 17:51:53,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 17:51:53,949 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 17:51:53,950 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 17:51:53,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 17:51:53,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 17:51:53,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 17:51:53,964 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 17:51:53,966 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 17:51:53,967 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 17:51:53,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 17:51:53,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 17:51:53,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 17:51:53,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 17:51:53,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 17:51:53,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 17:51:53,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 17:51:53,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 17:51:53,999 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 17:51:54,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 17:51:54,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 17:51:54,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 17:51:54,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 17:51:54,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 17:51:54,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 17:51:54,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 17:51:54,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 17:51:54,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 17:51:54,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 17:51:54,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 17:51:54,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 17:51:54,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 17:51:54,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 17:51:54,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 17:51:54,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 17:51:54,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 17:51:54,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 17:51:54,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 17:51:54,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 17:51:54,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 17:51:54,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 17:51:54,059 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 17:51:54,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 17:51:54,060 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 17:51:54,060 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 17:51:54,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 17:51:54,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 17:51:54,061 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 17:51:54,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 17:51:54,062 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 17:51:54,062 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 17:51:54,062 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 17:51:54,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 17:51:54,063 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 17:51:54,063 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 17:51:54,063 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 17:51:54,064 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 17:51:54,064 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 17:51:54,064 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 17:51:54,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 17:51:54,065 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 17:51:54,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 17:51:54,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 17:51:54,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 17:51:54,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 17:51:54,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 17:51:54,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 17:51:54,067 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 17:51:54,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 17:51:54,067 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 17:51:54,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 17:51:54,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 17:51:54,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 17:51:54,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:51:54,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 17:51:54,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 17:51:54,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 17:51:54,069 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 17:51:54,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 17:51:54,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 17:51:54,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 17:51:54,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 17:51:54,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7fe14b036c76813552f56a0b0f6fa4a7e816ada4aa4a291eafd4277fae7b99b [2021-11-25 17:51:54,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 17:51:54,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 17:51:54,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 17:51:54,355 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 17:51:54,356 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 17:51:54,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-25 17:51:54,415 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/data/71f5b3488/ed01106231894e509facd6ef0abd07e4/FLAG03d5479b4 [2021-11-25 17:51:55,023 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 17:51:55,024 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-25 17:51:55,038 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/data/71f5b3488/ed01106231894e509facd6ef0abd07e4/FLAG03d5479b4 [2021-11-25 17:51:55,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/data/71f5b3488/ed01106231894e509facd6ef0abd07e4 [2021-11-25 17:51:55,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 17:51:55,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 17:51:55,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 17:51:55,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 17:51:55,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 17:51:55,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:55" (1/1) ... [2021-11-25 17:51:55,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca211f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:55, skipping insertion in model container [2021-11-25 17:51:55,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:51:55" (1/1) ... [2021-11-25 17:51:55,283 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 17:51:55,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 17:51:55,617 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8893,8906] [2021-11-25 17:51:55,660 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12165,12178] [2021-11-25 17:51:55,686 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13321,13334] [2021-11-25 17:51:55,699 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13977,13990] [2021-11-25 17:51:55,728 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15456,15469] [2021-11-25 17:51:55,736 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16112,16125] [2021-11-25 17:51:55,743 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17096,17109] [2021-11-25 17:51:55,759 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19392,19405] [2021-11-25 17:51:55,765 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20051,20064] [2021-11-25 17:51:55,772 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21033,21046] [2021-11-25 17:51:55,785 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22824,22837] [2021-11-25 17:51:55,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:51:55,931 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 17:51:55,974 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[8893,8906] [2021-11-25 17:51:55,987 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[12165,12178] [2021-11-25 17:51:55,992 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13321,13334] [2021-11-25 17:51:55,997 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13977,13990] [2021-11-25 17:51:56,010 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[15456,15469] [2021-11-25 17:51:56,021 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[16112,16125] [2021-11-25 17:51:56,029 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[17096,17109] [2021-11-25 17:51:56,040 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19392,19405] [2021-11-25 17:51:56,046 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20051,20064] [2021-11-25 17:51:56,051 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21033,21046] [2021-11-25 17:51:56,060 WARN L230 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_a1c11fe9-ec50-4fa2-b795-1789232b98ab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22824,22837] [2021-11-25 17:51:56,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 17:51:56,160 INFO L208 MainTranslator]: Completed translation [2021-11-25 17:51:56,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56 WrapperNode [2021-11-25 17:51:56,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 17:51:56,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 17:51:56,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 17:51:56,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 17:51:56,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,227 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,320 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1790 [2021-11-25 17:51:56,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 17:51:56,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 17:51:56,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 17:51:56,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 17:51:56,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 17:51:56,412 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 17:51:56,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 17:51:56,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 17:51:56,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (1/1) ... [2021-11-25 17:51:56,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 17:51:56,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:51:56,481 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 17:51:56,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 17:51:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 17:51:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 17:51:56,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 17:51:56,546 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 17:51:56,761 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 17:51:56,762 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 17:51:57,920 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 17:51:58,032 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 17:51:58,032 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 17:51:58,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:58 BoogieIcfgContainer [2021-11-25 17:51:58,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 17:51:58,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 17:51:58,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 17:51:58,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 17:51:58,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:51:55" (1/3) ... [2021-11-25 17:51:58,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d678925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:58, skipping insertion in model container [2021-11-25 17:51:58,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:51:56" (2/3) ... [2021-11-25 17:51:58,046 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d678925 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:51:58, skipping insertion in model container [2021-11-25 17:51:58,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:51:58" (3/3) ... [2021-11-25 17:51:58,048 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-25 17:51:58,053 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 17:51:58,053 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-11-25 17:51:58,104 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 17:51:58,111 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 17:51:58,111 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-11-25 17:51:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 324 states have (on average 1.845679012345679) internal successors, (598), 335 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-25 17:51:58,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:58,153 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:51:58,153 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:58,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:58,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1432511949, now seen corresponding path program 1 times [2021-11-25 17:51:58,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:58,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717217191] [2021-11-25 17:51:58,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:58,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:58,545 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:58,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717217191] [2021-11-25 17:51:58,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717217191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:58,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:58,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:51:58,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23628596] [2021-11-25 17:51:58,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:58,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:58,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:58,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:58,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:58,599 INFO L87 Difference]: Start difference. First operand has 336 states, 324 states have (on average 1.845679012345679) internal successors, (598), 335 states have internal predecessors, (598), 0 states have call successors, (0), 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 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:59,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:59,079 INFO L93 Difference]: Finished difference Result 526 states and 899 transitions. [2021-11-25 17:51:59,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:51:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-11-25 17:51:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:59,096 INFO L225 Difference]: With dead ends: 526 [2021-11-25 17:51:59,096 INFO L226 Difference]: Without dead ends: 282 [2021-11-25 17:51:59,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:51:59,105 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 1345 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:59,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 354 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:51:59,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-25 17:51:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2021-11-25 17:51:59,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 271 states have (on average 1.2583025830258303) internal successors, (341), 281 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:59,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 341 transitions. [2021-11-25 17:51:59,164 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 341 transitions. Word has length 57 [2021-11-25 17:51:59,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:59,165 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 341 transitions. [2021-11-25 17:51:59,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:59,166 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 341 transitions. [2021-11-25 17:51:59,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-25 17:51:59,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:59,170 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:51:59,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 17:51:59,171 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:59,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:59,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1451472122, now seen corresponding path program 1 times [2021-11-25 17:51:59,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:59,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178708579] [2021-11-25 17:51:59,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:59,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:59,312 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178708579] [2021-11-25 17:51:59,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178708579] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:59,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:59,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:51:59,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101161492] [2021-11-25 17:51:59,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:59,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:59,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:59,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:59,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:59,316 INFO L87 Difference]: Start difference. First operand 282 states and 341 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:59,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:59,582 INFO L93 Difference]: Finished difference Result 466 states and 577 transitions. [2021-11-25 17:51:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:51:59,582 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 [2021-11-25 17:51:59,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:59,596 INFO L225 Difference]: With dead ends: 466 [2021-11-25 17:51:59,596 INFO L226 Difference]: Without dead ends: 262 [2021-11-25 17:51:59,599 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:51:59,601 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 858 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:59,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 189 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:51:59,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-25 17:51:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2021-11-25 17:51:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 251 states have (on average 1.2589641434262948) internal successors, (316), 261 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:51:59,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 316 transitions. [2021-11-25 17:51:59,634 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 316 transitions. Word has length 58 [2021-11-25 17:51:59,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:51:59,634 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 316 transitions. [2021-11-25 17:51:59,635 INFO L471 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) [2021-11-25 17:51:59,635 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 316 transitions. [2021-11-25 17:51:59,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-25 17:51:59,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:51:59,638 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:51:59,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 17:51:59,639 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:51:59,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:51:59,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1444601844, now seen corresponding path program 1 times [2021-11-25 17:51:59,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:51:59,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426368323] [2021-11-25 17:51:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:51:59,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:51:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:51:59,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:51:59,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:51:59,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426368323] [2021-11-25 17:51:59,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426368323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:51:59,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:51:59,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:51:59,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771208630] [2021-11-25 17:51:59,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:51:59,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:51:59,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:51:59,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:51:59,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:51:59,782 INFO L87 Difference]: Start difference. First operand 262 states and 316 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) [2021-11-25 17:51:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:51:59,978 INFO L93 Difference]: Finished difference Result 446 states and 551 transitions. [2021-11-25 17:51:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:51:59,978 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 [2021-11-25 17:51:59,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:51:59,980 INFO L225 Difference]: With dead ends: 446 [2021-11-25 17:51:59,981 INFO L226 Difference]: Without dead ends: 240 [2021-11-25 17:51:59,982 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:51:59,986 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 822 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:51:59,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 177 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:51:59,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-25 17:52:00,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-11-25 17:52:00,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 229 states have (on average 1.2707423580786026) internal successors, (291), 239 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:00,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 291 transitions. [2021-11-25 17:52:00,032 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 291 transitions. Word has length 59 [2021-11-25 17:52:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:00,034 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 291 transitions. [2021-11-25 17:52:00,034 INFO L471 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) [2021-11-25 17:52:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 291 transitions. [2021-11-25 17:52:00,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-25 17:52:00,041 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:00,042 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:00,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 17:52:00,043 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:00,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:00,044 INFO L85 PathProgramCache]: Analyzing trace with hash -98923345, now seen corresponding path program 1 times [2021-11-25 17:52:00,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:00,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616678308] [2021-11-25 17:52:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:00,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:00,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:00,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:00,194 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:00,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616678308] [2021-11-25 17:52:00,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616678308] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:00,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:00,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:52:00,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871197501] [2021-11-25 17:52:00,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:00,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 17:52:00,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:00,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 17:52:00,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:52:00,197 INFO L87 Difference]: Start difference. First operand 240 states and 291 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) [2021-11-25 17:52:00,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:00,493 INFO L93 Difference]: Finished difference Result 539 states and 668 transitions. [2021-11-25 17:52:00,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 17:52:00,493 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 [2021-11-25 17:52:00,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:00,496 INFO L225 Difference]: With dead ends: 539 [2021-11-25 17:52:00,496 INFO L226 Difference]: Without dead ends: 341 [2021-11-25 17:52:00,496 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:00,498 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 1020 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:00,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1020 Valid, 257 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:52:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-25 17:52:00,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 299. [2021-11-25 17:52:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.3194444444444444) internal successors, (380), 298 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) [2021-11-25 17:52:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 380 transitions. [2021-11-25 17:52:00,523 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 380 transitions. Word has length 60 [2021-11-25 17:52:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:00,523 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 380 transitions. [2021-11-25 17:52:00,523 INFO L471 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) [2021-11-25 17:52:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 380 transitions. [2021-11-25 17:52:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 17:52:00,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:00,525 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:00,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 17:52:00,525 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:00,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:00,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1012719179, now seen corresponding path program 1 times [2021-11-25 17:52:00,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:00,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066521983] [2021-11-25 17:52:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:00,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:00,792 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:00,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066521983] [2021-11-25 17:52:00,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066521983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:00,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:00,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:52:00,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100896556] [2021-11-25 17:52:00,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:00,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:52:00,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:52:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:52:00,803 INFO L87 Difference]: Start difference. First operand 299 states and 380 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 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) [2021-11-25 17:52:01,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:01,708 INFO L93 Difference]: Finished difference Result 695 states and 886 transitions. [2021-11-25 17:52:01,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 17:52:01,709 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 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 [2021-11-25 17:52:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:01,713 INFO L225 Difference]: With dead ends: 695 [2021-11-25 17:52:01,713 INFO L226 Difference]: Without dead ends: 622 [2021-11-25 17:52:01,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=488, Unknown=0, NotChecked=0, Total=650 [2021-11-25 17:52:01,715 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 1493 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 923 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:01,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 923 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:52:01,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-25 17:52:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 306. [2021-11-25 17:52:01,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 295 states have (on average 1.3220338983050848) internal successors, (390), 305 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 390 transitions. [2021-11-25 17:52:01,748 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 390 transitions. Word has length 61 [2021-11-25 17:52:01,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:01,749 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 390 transitions. [2021-11-25 17:52:01,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 10 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) [2021-11-25 17:52:01,749 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 390 transitions. [2021-11-25 17:52:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 17:52:01,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:01,750 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:01,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 17:52:01,751 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:01,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1370051015, now seen corresponding path program 1 times [2021-11-25 17:52:01,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:01,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689546832] [2021-11-25 17:52:01,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:01,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:01,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:01,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689546832] [2021-11-25 17:52:01,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689546832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:01,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:01,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:01,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083463974] [2021-11-25 17:52:01,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:01,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:01,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:01,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:01,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:01,896 INFO L87 Difference]: Start difference. First operand 306 states and 390 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 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) [2021-11-25 17:52:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:02,598 INFO L93 Difference]: Finished difference Result 592 states and 754 transitions. [2021-11-25 17:52:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:52:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 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 [2021-11-25 17:52:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:02,601 INFO L225 Difference]: With dead ends: 592 [2021-11-25 17:52:02,601 INFO L226 Difference]: Without dead ends: 490 [2021-11-25 17:52:02,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:52:02,602 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 1220 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 750 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:02,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1220 Valid, 750 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:02,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-25 17:52:02,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 299. [2021-11-25 17:52:02,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.3159722222222223) internal successors, (379), 298 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) [2021-11-25 17:52:02,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 379 transitions. [2021-11-25 17:52:02,634 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 379 transitions. Word has length 61 [2021-11-25 17:52:02,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:02,635 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 379 transitions. [2021-11-25 17:52:02,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 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) [2021-11-25 17:52:02,635 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 379 transitions. [2021-11-25 17:52:02,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 17:52:02,636 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:02,636 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:02,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 17:52:02,637 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 603873951, now seen corresponding path program 1 times [2021-11-25 17:52:02,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:02,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307937295] [2021-11-25 17:52:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:02,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:02,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:02,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:02,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307937295] [2021-11-25 17:52:02,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307937295] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:02,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:02,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:02,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151723510] [2021-11-25 17:52:02,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:02,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:02,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:02,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:02,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:02,787 INFO L87 Difference]: Start difference. First operand 299 states and 379 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 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) [2021-11-25 17:52:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:03,557 INFO L93 Difference]: Finished difference Result 692 states and 895 transitions. [2021-11-25 17:52:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:52:03,558 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 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 [2021-11-25 17:52:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:03,562 INFO L225 Difference]: With dead ends: 692 [2021-11-25 17:52:03,562 INFO L226 Difference]: Without dead ends: 612 [2021-11-25 17:52:03,563 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:03,564 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 961 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 872 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:03,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [961 Valid, 1095 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 872 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:03,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-11-25 17:52:03,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 299. [2021-11-25 17:52:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.3125) internal successors, (378), 298 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) [2021-11-25 17:52:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 378 transitions. [2021-11-25 17:52:03,600 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 378 transitions. Word has length 61 [2021-11-25 17:52:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:03,600 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 378 transitions. [2021-11-25 17:52:03,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 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) [2021-11-25 17:52:03,601 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 378 transitions. [2021-11-25 17:52:03,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-25 17:52:03,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:03,602 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:03,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 17:52:03,602 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:03,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:03,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1551029823, now seen corresponding path program 1 times [2021-11-25 17:52:03,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:03,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569204306] [2021-11-25 17:52:03,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:03,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:03,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:03,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:03,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569204306] [2021-11-25 17:52:03,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569204306] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:03,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:03,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:52:03,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567723937] [2021-11-25 17:52:03,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:03,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:52:03,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:03,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:52:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:52:03,732 INFO L87 Difference]: Start difference. First operand 299 states and 378 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 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) [2021-11-25 17:52:04,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:04,176 INFO L93 Difference]: Finished difference Result 573 states and 711 transitions. [2021-11-25 17:52:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 17:52:04,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 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 [2021-11-25 17:52:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:04,180 INFO L225 Difference]: With dead ends: 573 [2021-11-25 17:52:04,180 INFO L226 Difference]: Without dead ends: 426 [2021-11-25 17:52:04,181 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:04,181 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 1048 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:04,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1048 Valid, 506 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:52:04,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-11-25 17:52:04,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 299. [2021-11-25 17:52:04,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.3090277777777777) internal successors, (377), 298 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:04,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 377 transitions. [2021-11-25 17:52:04,216 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 377 transitions. Word has length 61 [2021-11-25 17:52:04,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:04,217 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 377 transitions. [2021-11-25 17:52:04,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 6 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) [2021-11-25 17:52:04,217 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 377 transitions. [2021-11-25 17:52:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 17:52:04,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:04,218 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:04,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 17:52:04,219 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:04,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:04,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1026541166, now seen corresponding path program 1 times [2021-11-25 17:52:04,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:04,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198382249] [2021-11-25 17:52:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:04,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:04,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:04,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:04,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:04,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198382249] [2021-11-25 17:52:04,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198382249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:04,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:04,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:04,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128051769] [2021-11-25 17:52:04,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:04,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:04,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:04,344 INFO L87 Difference]: Start difference. First operand 299 states and 377 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:05,123 INFO L93 Difference]: Finished difference Result 665 states and 849 transitions. [2021-11-25 17:52:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:52:05,124 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 17:52:05,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:05,128 INFO L225 Difference]: With dead ends: 665 [2021-11-25 17:52:05,128 INFO L226 Difference]: Without dead ends: 592 [2021-11-25 17:52:05,129 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:05,132 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 897 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:05,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 1005 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:05,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-25 17:52:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 299. [2021-11-25 17:52:05,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.3055555555555556) internal successors, (376), 298 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) [2021-11-25 17:52:05,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 376 transitions. [2021-11-25 17:52:05,169 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 376 transitions. Word has length 63 [2021-11-25 17:52:05,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:05,170 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 376 transitions. [2021-11-25 17:52:05,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 376 transitions. [2021-11-25 17:52:05,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 17:52:05,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:05,177 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:05,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 17:52:05,178 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:05,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:05,179 INFO L85 PathProgramCache]: Analyzing trace with hash 885655936, now seen corresponding path program 1 times [2021-11-25 17:52:05,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:05,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608453648] [2021-11-25 17:52:05,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:05,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:05,346 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:05,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608453648] [2021-11-25 17:52:05,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608453648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:05,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:05,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:05,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042075219] [2021-11-25 17:52:05,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:05,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:05,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:05,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:05,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:05,347 INFO L87 Difference]: Start difference. First operand 299 states and 376 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:06,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:06,046 INFO L93 Difference]: Finished difference Result 697 states and 896 transitions. [2021-11-25 17:52:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:52:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 17:52:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:06,051 INFO L225 Difference]: With dead ends: 697 [2021-11-25 17:52:06,051 INFO L226 Difference]: Without dead ends: 612 [2021-11-25 17:52:06,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:52:06,053 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 639 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 801 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:06,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 987 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 801 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-11-25 17:52:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 299. [2021-11-25 17:52:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.3020833333333333) internal successors, (375), 298 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 375 transitions. [2021-11-25 17:52:06,090 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 375 transitions. Word has length 63 [2021-11-25 17:52:06,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:06,090 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 375 transitions. [2021-11-25 17:52:06,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:06,091 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 375 transitions. [2021-11-25 17:52:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 17:52:06,092 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:06,092 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:06,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 17:52:06,093 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:06,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:06,093 INFO L85 PathProgramCache]: Analyzing trace with hash -515644867, now seen corresponding path program 1 times [2021-11-25 17:52:06,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:06,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914367255] [2021-11-25 17:52:06,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:06,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:06,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:06,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914367255] [2021-11-25 17:52:06,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914367255] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:06,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:06,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:06,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769346099] [2021-11-25 17:52:06,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:06,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:06,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:06,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:06,206 INFO L87 Difference]: Start difference. First operand 299 states and 375 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:06,970 INFO L93 Difference]: Finished difference Result 662 states and 844 transitions. [2021-11-25 17:52:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:52:06,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 17:52:06,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:06,974 INFO L225 Difference]: With dead ends: 662 [2021-11-25 17:52:06,974 INFO L226 Difference]: Without dead ends: 592 [2021-11-25 17:52:06,975 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:06,976 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 922 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 809 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:06,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 1025 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 809 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:06,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-25 17:52:07,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 299. [2021-11-25 17:52:07,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.2986111111111112) internal successors, (374), 298 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) [2021-11-25 17:52:07,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 374 transitions. [2021-11-25 17:52:07,012 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 374 transitions. Word has length 63 [2021-11-25 17:52:07,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:07,013 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 374 transitions. [2021-11-25 17:52:07,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:07,013 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 374 transitions. [2021-11-25 17:52:07,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 17:52:07,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:07,014 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:07,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 17:52:07,015 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:07,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:07,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1781677741, now seen corresponding path program 1 times [2021-11-25 17:52:07,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:07,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720392912] [2021-11-25 17:52:07,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:07,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:07,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:07,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:07,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720392912] [2021-11-25 17:52:07,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720392912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:07,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:07,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:07,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205219173] [2021-11-25 17:52:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:07,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:07,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:07,137 INFO L87 Difference]: Start difference. First operand 299 states and 374 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:07,822 INFO L93 Difference]: Finished difference Result 597 states and 753 transitions. [2021-11-25 17:52:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:52:07,822 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 17:52:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:07,825 INFO L225 Difference]: With dead ends: 597 [2021-11-25 17:52:07,825 INFO L226 Difference]: Without dead ends: 592 [2021-11-25 17:52:07,826 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:07,826 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1015 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:07,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 864 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:52:07,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-25 17:52:07,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 299. [2021-11-25 17:52:07,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.2951388888888888) internal successors, (373), 298 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:07,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 373 transitions. [2021-11-25 17:52:07,865 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 373 transitions. Word has length 63 [2021-11-25 17:52:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:07,866 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 373 transitions. [2021-11-25 17:52:07,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:07,866 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 373 transitions. [2021-11-25 17:52:07,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 17:52:07,867 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:07,867 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:07,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 17:52:07,868 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:07,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:07,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1022850411, now seen corresponding path program 1 times [2021-11-25 17:52:07,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:07,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640014091] [2021-11-25 17:52:07,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:07,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:08,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:08,020 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:08,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640014091] [2021-11-25 17:52:08,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640014091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:08,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:08,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:52:08,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78203412] [2021-11-25 17:52:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:08,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:52:08,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:52:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:52:08,023 INFO L87 Difference]: Start difference. First operand 299 states and 373 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:08,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:08,947 INFO L93 Difference]: Finished difference Result 545 states and 695 transitions. [2021-11-25 17:52:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 17:52:08,947 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 17:52:08,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:08,950 INFO L225 Difference]: With dead ends: 545 [2021-11-25 17:52:08,950 INFO L226 Difference]: Without dead ends: 413 [2021-11-25 17:52:08,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-25 17:52:08,952 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1073 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:08,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 942 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:08,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-11-25 17:52:08,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 299. [2021-11-25 17:52:08,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.2881944444444444) internal successors, (371), 298 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:08,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 371 transitions. [2021-11-25 17:52:08,994 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 371 transitions. Word has length 63 [2021-11-25 17:52:08,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:08,994 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 371 transitions. [2021-11-25 17:52:08,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:08,995 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 371 transitions. [2021-11-25 17:52:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 17:52:08,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:08,996 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:08,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 17:52:08,996 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:08,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:08,997 INFO L85 PathProgramCache]: Analyzing trace with hash 100501655, now seen corresponding path program 1 times [2021-11-25 17:52:08,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:08,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940833841] [2021-11-25 17:52:08,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:08,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:09,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:09,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940833841] [2021-11-25 17:52:09,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940833841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:09,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:09,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:09,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128349093] [2021-11-25 17:52:09,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:09,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:09,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:09,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:09,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:09,107 INFO L87 Difference]: Start difference. First operand 299 states and 371 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:09,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:09,916 INFO L93 Difference]: Finished difference Result 597 states and 749 transitions. [2021-11-25 17:52:09,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:52:09,916 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 17:52:09,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:09,920 INFO L225 Difference]: With dead ends: 597 [2021-11-25 17:52:09,920 INFO L226 Difference]: Without dead ends: 592 [2021-11-25 17:52:09,921 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:09,922 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 878 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1107 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:09,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 1107 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-11-25 17:52:09,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 299. [2021-11-25 17:52:09,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.28125) internal successors, (369), 298 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 369 transitions. [2021-11-25 17:52:09,977 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 369 transitions. Word has length 63 [2021-11-25 17:52:09,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:09,977 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 369 transitions. [2021-11-25 17:52:09,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 369 transitions. [2021-11-25 17:52:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-25 17:52:09,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:09,979 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:09,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 17:52:09,980 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:09,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:09,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2012698757, now seen corresponding path program 1 times [2021-11-25 17:52:09,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:09,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489975589] [2021-11-25 17:52:09,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:09,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:10,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:10,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:10,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489975589] [2021-11-25 17:52:10,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489975589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:10,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:10,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:10,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853276221] [2021-11-25 17:52:10,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:10,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:10,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:10,086 INFO L87 Difference]: Start difference. First operand 299 states and 369 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:10,773 INFO L93 Difference]: Finished difference Result 629 states and 795 transitions. [2021-11-25 17:52:10,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:52:10,774 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-25 17:52:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:10,777 INFO L225 Difference]: With dead ends: 629 [2021-11-25 17:52:10,777 INFO L226 Difference]: Without dead ends: 612 [2021-11-25 17:52:10,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-25 17:52:10,778 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 665 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:10,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1219 Invalid, 855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:10,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-11-25 17:52:10,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 299. [2021-11-25 17:52:10,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 288 states have (on average 1.2743055555555556) internal successors, (367), 298 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:10,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 367 transitions. [2021-11-25 17:52:10,823 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 367 transitions. Word has length 63 [2021-11-25 17:52:10,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:10,823 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 367 transitions. [2021-11-25 17:52:10,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 7 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:10,824 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 367 transitions. [2021-11-25 17:52:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:52:10,825 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:10,825 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:10,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 17:52:10,826 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:10,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:10,826 INFO L85 PathProgramCache]: Analyzing trace with hash -522081681, now seen corresponding path program 1 times [2021-11-25 17:52:10,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:10,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581035229] [2021-11-25 17:52:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:10,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:10,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:11,594 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:11,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581035229] [2021-11-25 17:52:11,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581035229] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:11,594 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:11,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-11-25 17:52:11,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419020881] [2021-11-25 17:52:11,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:11,595 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-25 17:52:11,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-25 17:52:11,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-11-25 17:52:11,597 INFO L87 Difference]: Start difference. First operand 299 states and 367 transitions. Second operand has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:14,496 INFO L93 Difference]: Finished difference Result 698 states and 851 transitions. [2021-11-25 17:52:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-25 17:52:14,497 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:52:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:14,499 INFO L225 Difference]: With dead ends: 698 [2021-11-25 17:52:14,500 INFO L226 Difference]: Without dead ends: 626 [2021-11-25 17:52:14,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=342, Invalid=1550, Unknown=0, NotChecked=0, Total=1892 [2021-11-25 17:52:14,502 INFO L933 BasicCegarLoop]: 392 mSDtfsCounter, 1421 mSDsluCounter, 4668 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 5008 SdHoareTripleChecker+Invalid, 2663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:14,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 5008 Invalid, 2663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 17:52:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-11-25 17:52:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 310. [2021-11-25 17:52:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 299 states have (on average 1.274247491638796) internal successors, (381), 309 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) [2021-11-25 17:52:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 381 transitions. [2021-11-25 17:52:14,553 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 381 transitions. Word has length 65 [2021-11-25 17:52:14,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:14,554 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 381 transitions. [2021-11-25 17:52:14,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.7083333333333335) internal successors, (65), 23 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 381 transitions. [2021-11-25 17:52:14,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:52:14,556 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:14,556 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:14,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 17:52:14,556 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:14,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:14,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1992368467, now seen corresponding path program 1 times [2021-11-25 17:52:14,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:14,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006373509] [2021-11-25 17:52:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:14,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:14,832 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:14,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006373509] [2021-11-25 17:52:14,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006373509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:14,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:14,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 17:52:14,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728808829] [2021-11-25 17:52:14,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:14,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 17:52:14,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 17:52:14,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-25 17:52:14,834 INFO L87 Difference]: Start difference. First operand 310 states and 381 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:15,542 INFO L93 Difference]: Finished difference Result 614 states and 748 transitions. [2021-11-25 17:52:15,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 17:52:15,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:52:15,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:15,545 INFO L225 Difference]: With dead ends: 614 [2021-11-25 17:52:15,546 INFO L226 Difference]: Without dead ends: 472 [2021-11-25 17:52:15,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:52:15,547 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 1238 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:15,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 1046 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:52:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-11-25 17:52:15,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 236. [2021-11-25 17:52:15,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 229 states have (on average 1.2663755458515285) internal successors, (290), 235 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:15,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 290 transitions. [2021-11-25 17:52:15,599 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 290 transitions. Word has length 65 [2021-11-25 17:52:15,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:15,599 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 290 transitions. [2021-11-25 17:52:15,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:15,600 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 290 transitions. [2021-11-25 17:52:15,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:52:15,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:15,601 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:15,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 17:52:15,601 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:15,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:15,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1614163178, now seen corresponding path program 1 times [2021-11-25 17:52:15,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:15,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646273821] [2021-11-25 17:52:15,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:15,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:15,962 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:15,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646273821] [2021-11-25 17:52:15,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646273821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:15,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:15,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:52:15,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111027651] [2021-11-25 17:52:15,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:15,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:52:15,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:15,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:52:15,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:52:15,964 INFO L87 Difference]: Start difference. First operand 236 states and 290 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:16,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:16,867 INFO L93 Difference]: Finished difference Result 623 states and 774 transitions. [2021-11-25 17:52:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:52:16,868 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:52:16,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:16,872 INFO L225 Difference]: With dead ends: 623 [2021-11-25 17:52:16,872 INFO L226 Difference]: Without dead ends: 549 [2021-11-25 17:52:16,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-25 17:52:16,874 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 1181 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:16,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1181 Valid, 1480 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:52:16,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-25 17:52:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 226. [2021-11-25 17:52:16,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 220 states have (on average 1.25) internal successors, (275), 225 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 275 transitions. [2021-11-25 17:52:16,941 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 275 transitions. Word has length 65 [2021-11-25 17:52:16,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:16,941 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 275 transitions. [2021-11-25 17:52:16,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:16,942 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 275 transitions. [2021-11-25 17:52:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-25 17:52:16,943 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:16,943 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:16,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 17:52:16,944 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:16,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:16,944 INFO L85 PathProgramCache]: Analyzing trace with hash 234306004, now seen corresponding path program 1 times [2021-11-25 17:52:16,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:16,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683997766] [2021-11-25 17:52:16,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:16,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:17,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:17,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683997766] [2021-11-25 17:52:17,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683997766] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:17,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:17,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:52:17,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192801693] [2021-11-25 17:52:17,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:17,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:52:17,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:17,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:52:17,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:52:17,359 INFO L87 Difference]: Start difference. First operand 226 states and 275 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:18,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:18,196 INFO L93 Difference]: Finished difference Result 486 states and 619 transitions. [2021-11-25 17:52:18,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 17:52:18,197 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-25 17:52:18,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:18,199 INFO L225 Difference]: With dead ends: 486 [2021-11-25 17:52:18,199 INFO L226 Difference]: Without dead ends: 376 [2021-11-25 17:52:18,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:52:18,202 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 611 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:18,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 1399 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:52:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-11-25 17:52:18,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 184. [2021-11-25 17:52:18,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.2320441988950277) internal successors, (223), 183 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 223 transitions. [2021-11-25 17:52:18,265 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 223 transitions. Word has length 65 [2021-11-25 17:52:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:18,265 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 223 transitions. [2021-11-25 17:52:18,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 223 transitions. [2021-11-25 17:52:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 17:52:18,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:18,267 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:18,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 17:52:18,267 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:18,268 INFO L85 PathProgramCache]: Analyzing trace with hash -785038328, now seen corresponding path program 1 times [2021-11-25 17:52:18,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:18,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294264587] [2021-11-25 17:52:18,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:18,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:18,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:18,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:18,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:18,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294264587] [2021-11-25 17:52:18,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294264587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:18,424 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:18,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:18,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049747636] [2021-11-25 17:52:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:18,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:18,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:18,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:18,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:18,426 INFO L87 Difference]: Start difference. First operand 184 states and 223 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2021-11-25 17:52:18,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:18,870 INFO L93 Difference]: Finished difference Result 295 states and 362 transitions. [2021-11-25 17:52:18,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 17:52:18,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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 [2021-11-25 17:52:18,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:18,872 INFO L225 Difference]: With dead ends: 295 [2021-11-25 17:52:18,873 INFO L226 Difference]: Without dead ends: 288 [2021-11-25 17:52:18,873 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:18,874 INFO L933 BasicCegarLoop]: 102 mSDtfsCounter, 431 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:18,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 468 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:52:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-25 17:52:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 184. [2021-11-25 17:52:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.2265193370165746) internal successors, (222), 183 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:18,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 222 transitions. [2021-11-25 17:52:18,936 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 222 transitions. Word has length 66 [2021-11-25 17:52:18,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:18,936 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 222 transitions. [2021-11-25 17:52:18,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 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) [2021-11-25 17:52:18,937 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 222 transitions. [2021-11-25 17:52:18,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-25 17:52:18,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:18,938 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:18,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 17:52:18,938 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1670965080, now seen corresponding path program 1 times [2021-11-25 17:52:18,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:18,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094607240] [2021-11-25 17:52:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:18,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:19,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:19,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:19,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094607240] [2021-11-25 17:52:19,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094607240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:19,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:19,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:52:19,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341452190] [2021-11-25 17:52:19,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:19,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:52:19,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:19,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:52:19,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:52:19,164 INFO L87 Difference]: Start difference. First operand 184 states and 222 transitions. Second operand has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 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) [2021-11-25 17:52:20,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:20,665 INFO L93 Difference]: Finished difference Result 867 states and 1120 transitions. [2021-11-25 17:52:20,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 17:52:20,665 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 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 [2021-11-25 17:52:20,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:20,669 INFO L225 Difference]: With dead ends: 867 [2021-11-25 17:52:20,669 INFO L226 Difference]: Without dead ends: 769 [2021-11-25 17:52:20,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:52:20,671 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1379 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:20,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1379 Valid, 779 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 17:52:20,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2021-11-25 17:52:20,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 192. [2021-11-25 17:52:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 1.216931216931217) internal successors, (230), 191 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:20,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 230 transitions. [2021-11-25 17:52:20,734 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 230 transitions. Word has length 66 [2021-11-25 17:52:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:20,734 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 230 transitions. [2021-11-25 17:52:20,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.0) internal successors, (66), 10 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) [2021-11-25 17:52:20,735 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 230 transitions. [2021-11-25 17:52:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-25 17:52:20,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:20,736 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:20,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 17:52:20,736 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:20,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:20,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1612547898, now seen corresponding path program 1 times [2021-11-25 17:52:20,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:20,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077052184] [2021-11-25 17:52:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:20,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:20,830 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:20,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077052184] [2021-11-25 17:52:20,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077052184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:20,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:20,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:20,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612329629] [2021-11-25 17:52:20,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:20,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:20,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:20,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:20,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:20,833 INFO L87 Difference]: Start difference. First operand 192 states and 230 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) [2021-11-25 17:52:21,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:21,229 INFO L93 Difference]: Finished difference Result 410 states and 510 transitions. [2021-11-25 17:52:21,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:52:21,230 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 [2021-11-25 17:52:21,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:21,232 INFO L225 Difference]: With dead ends: 410 [2021-11-25 17:52:21,232 INFO L226 Difference]: Without dead ends: 312 [2021-11-25 17:52:21,233 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:21,234 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 378 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:21,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 430 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:52:21,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-25 17:52:21,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 184. [2021-11-25 17:52:21,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.2154696132596685) internal successors, (220), 183 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:21,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 220 transitions. [2021-11-25 17:52:21,304 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 220 transitions. Word has length 67 [2021-11-25 17:52:21,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:21,304 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 220 transitions. [2021-11-25 17:52:21,304 INFO L471 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) [2021-11-25 17:52:21,305 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 220 transitions. [2021-11-25 17:52:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 17:52:21,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:21,306 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:21,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 17:52:21,306 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:21,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:21,307 INFO L85 PathProgramCache]: Analyzing trace with hash 207320224, now seen corresponding path program 1 times [2021-11-25 17:52:21,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:21,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807485720] [2021-11-25 17:52:21,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:21,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:22,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:22,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:22,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807485720] [2021-11-25 17:52:22,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807485720] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:22,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:22,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-11-25 17:52:22,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073153017] [2021-11-25 17:52:22,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:22,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-25 17:52:22,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:22,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-25 17:52:22,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-11-25 17:52:22,201 INFO L87 Difference]: Start difference. First operand 184 states and 220 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:24,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:24,133 INFO L93 Difference]: Finished difference Result 588 states and 747 transitions. [2021-11-25 17:52:24,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 17:52:24,134 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-25 17:52:24,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:24,136 INFO L225 Difference]: With dead ends: 588 [2021-11-25 17:52:24,136 INFO L226 Difference]: Without dead ends: 582 [2021-11-25 17:52:24,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=262, Invalid=1378, Unknown=0, NotChecked=0, Total=1640 [2021-11-25 17:52:24,138 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 540 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:24,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 3130 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 17:52:24,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-11-25 17:52:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 195. [2021-11-25 17:52:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.21875) internal successors, (234), 194 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:24,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 234 transitions. [2021-11-25 17:52:24,206 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 234 transitions. Word has length 68 [2021-11-25 17:52:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:24,207 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 234 transitions. [2021-11-25 17:52:24,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 22 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:24,208 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 234 transitions. [2021-11-25 17:52:24,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-25 17:52:24,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:24,209 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:24,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 17:52:24,210 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:24,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1386499272, now seen corresponding path program 1 times [2021-11-25 17:52:24,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:24,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090060913] [2021-11-25 17:52:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:24,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:24,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:24,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090060913] [2021-11-25 17:52:24,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090060913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:24,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:24,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 17:52:24,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421903315] [2021-11-25 17:52:24,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:24,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 17:52:24,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 17:52:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:52:24,948 INFO L87 Difference]: Start difference. First operand 195 states and 234 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:26,470 INFO L93 Difference]: Finished difference Result 219 states and 258 transitions. [2021-11-25 17:52:26,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 17:52:26,471 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-11-25 17:52:26,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:26,473 INFO L225 Difference]: With dead ends: 219 [2021-11-25 17:52:26,473 INFO L226 Difference]: Without dead ends: 211 [2021-11-25 17:52:26,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 17:52:26,476 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 343 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:26,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1391 Invalid, 847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 17:52:26,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-25 17:52:26,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 199. [2021-11-25 17:52:26,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 196 states have (on average 1.219387755102041) internal successors, (239), 198 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 239 transitions. [2021-11-25 17:52:26,546 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 239 transitions. Word has length 68 [2021-11-25 17:52:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:26,547 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 239 transitions. [2021-11-25 17:52:26,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 21 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 239 transitions. [2021-11-25 17:52:26,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 17:52:26,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:26,549 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:26,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 17:52:26,549 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:26,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash -721471249, now seen corresponding path program 1 times [2021-11-25 17:52:26,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:26,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158171035] [2021-11-25 17:52:26,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:26,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:26,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:26,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:26,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158171035] [2021-11-25 17:52:26,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158171035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:26,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:26,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:52:26,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391983144] [2021-11-25 17:52:26,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:26,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:52:26,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:26,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:52:26,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:52:26,983 INFO L87 Difference]: Start difference. First operand 199 states and 239 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2021-11-25 17:52:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:28,317 INFO L93 Difference]: Finished difference Result 761 states and 974 transitions. [2021-11-25 17:52:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 17:52:28,318 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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 [2021-11-25 17:52:28,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:28,321 INFO L225 Difference]: With dead ends: 761 [2021-11-25 17:52:28,321 INFO L226 Difference]: Without dead ends: 755 [2021-11-25 17:52:28,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:52:28,322 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 959 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:28,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 2048 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 17:52:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2021-11-25 17:52:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 187. [2021-11-25 17:52:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.2108108108108109) internal successors, (224), 186 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 224 transitions. [2021-11-25 17:52:28,403 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 224 transitions. Word has length 69 [2021-11-25 17:52:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:28,404 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 224 transitions. [2021-11-25 17:52:28,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2021-11-25 17:52:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 224 transitions. [2021-11-25 17:52:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-25 17:52:28,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:28,405 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:28,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 17:52:28,406 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:28,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:28,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1979676551, now seen corresponding path program 1 times [2021-11-25 17:52:28,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:28,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638546832] [2021-11-25 17:52:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:28,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:28,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:28,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:28,858 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:28,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638546832] [2021-11-25 17:52:28,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638546832] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:28,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:28,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 17:52:28,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608726027] [2021-11-25 17:52:28,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:28,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 17:52:28,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:28,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 17:52:28,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-25 17:52:28,861 INFO L87 Difference]: Start difference. First operand 187 states and 224 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2021-11-25 17:52:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:30,189 INFO L93 Difference]: Finished difference Result 611 states and 782 transitions. [2021-11-25 17:52:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 17:52:30,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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 [2021-11-25 17:52:30,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:30,193 INFO L225 Difference]: With dead ends: 611 [2021-11-25 17:52:30,193 INFO L226 Difference]: Without dead ends: 596 [2021-11-25 17:52:30,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-25 17:52:30,194 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 608 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 2109 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:30,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 2109 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 17:52:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2021-11-25 17:52:30,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 166. [2021-11-25 17:52:30,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.206060606060606) internal successors, (199), 165 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:30,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 199 transitions. [2021-11-25 17:52:30,278 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 199 transitions. Word has length 69 [2021-11-25 17:52:30,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:30,278 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 199 transitions. [2021-11-25 17:52:30,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 12 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) [2021-11-25 17:52:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 199 transitions. [2021-11-25 17:52:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-25 17:52:30,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:30,280 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:30,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 17:52:30,280 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:30,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:30,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1970953540, now seen corresponding path program 1 times [2021-11-25 17:52:30,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:30,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210213938] [2021-11-25 17:52:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:30,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:30,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:30,333 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:30,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210213938] [2021-11-25 17:52:30,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210213938] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:30,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:30,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:30,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214375156] [2021-11-25 17:52:30,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:30,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:30,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:30,337 INFO L87 Difference]: Start difference. First operand 166 states and 199 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:30,455 INFO L93 Difference]: Finished difference Result 242 states and 301 transitions. [2021-11-25 17:52:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:30,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-25 17:52:30,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:30,456 INFO L225 Difference]: With dead ends: 242 [2021-11-25 17:52:30,456 INFO L226 Difference]: Without dead ends: 207 [2021-11-25 17:52:30,457 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:30,457 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 53 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:30,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 236 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-11-25 17:52:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 197. [2021-11-25 17:52:30,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.2244897959183674) internal successors, (240), 196 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:30,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 240 transitions. [2021-11-25 17:52:30,527 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 240 transitions. Word has length 82 [2021-11-25 17:52:30,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:30,527 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 240 transitions. [2021-11-25 17:52:30,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:30,527 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 240 transitions. [2021-11-25 17:52:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-25 17:52:30,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:30,528 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:30,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 17:52:30,528 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:30,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:30,528 INFO L85 PathProgramCache]: Analyzing trace with hash -181466713, now seen corresponding path program 1 times [2021-11-25 17:52:30,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:30,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559085136] [2021-11-25 17:52:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:30,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:30,598 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:30,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559085136] [2021-11-25 17:52:30,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559085136] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:30,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:30,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:30,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627841409] [2021-11-25 17:52:30,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:30,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:30,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:30,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:30,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:30,600 INFO L87 Difference]: Start difference. First operand 197 states and 240 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:30,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:30,810 INFO L93 Difference]: Finished difference Result 391 states and 502 transitions. [2021-11-25 17:52:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:30,811 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-25 17:52:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:30,813 INFO L225 Difference]: With dead ends: 391 [2021-11-25 17:52:30,813 INFO L226 Difference]: Without dead ends: 294 [2021-11-25 17:52:30,813 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:30,814 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 46 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:30,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 236 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-25 17:52:30,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 280. [2021-11-25 17:52:30,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.2616487455197132) internal successors, (352), 279 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:30,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 352 transitions. [2021-11-25 17:52:30,960 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 352 transitions. Word has length 85 [2021-11-25 17:52:30,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:30,960 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 352 transitions. [2021-11-25 17:52:30,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 352 transitions. [2021-11-25 17:52:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 17:52:30,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:30,961 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:30,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 17:52:30,962 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:30,963 INFO L85 PathProgramCache]: Analyzing trace with hash -142636224, now seen corresponding path program 1 times [2021-11-25 17:52:30,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:30,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260373348] [2021-11-25 17:52:30,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:30,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:31,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:31,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260373348] [2021-11-25 17:52:31,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260373348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:31,015 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:31,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:31,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200985988] [2021-11-25 17:52:31,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:31,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:31,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:31,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:31,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:31,017 INFO L87 Difference]: Start difference. First operand 280 states and 352 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:31,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:31,287 INFO L93 Difference]: Finished difference Result 640 states and 838 transitions. [2021-11-25 17:52:31,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:31,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-11-25 17:52:31,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:31,290 INFO L225 Difference]: With dead ends: 640 [2021-11-25 17:52:31,290 INFO L226 Difference]: Without dead ends: 460 [2021-11-25 17:52:31,290 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:31,291 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 39 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:31,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 236 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:31,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-25 17:52:31,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 434. [2021-11-25 17:52:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 1.2886836027713626) internal successors, (558), 433 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:31,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 558 transitions. [2021-11-25 17:52:31,520 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 558 transitions. Word has length 88 [2021-11-25 17:52:31,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:31,521 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 558 transitions. [2021-11-25 17:52:31,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:31,521 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 558 transitions. [2021-11-25 17:52:31,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-25 17:52:31,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:31,522 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:31,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 17:52:31,523 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:31,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:31,523 INFO L85 PathProgramCache]: Analyzing trace with hash 449708366, now seen corresponding path program 1 times [2021-11-25 17:52:31,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:31,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404277922] [2021-11-25 17:52:31,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:31,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:31,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:31,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:31,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404277922] [2021-11-25 17:52:31,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404277922] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:31,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:31,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:31,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801937563] [2021-11-25 17:52:31,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:31,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:31,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:31,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:31,578 INFO L87 Difference]: Start difference. First operand 434 states and 558 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:32,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:32,013 INFO L93 Difference]: Finished difference Result 1102 states and 1456 transitions. [2021-11-25 17:52:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:32,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-25 17:52:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:32,017 INFO L225 Difference]: With dead ends: 1102 [2021-11-25 17:52:32,017 INFO L226 Difference]: Without dead ends: 768 [2021-11-25 17:52:32,018 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:32,018 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 29 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:32,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 236 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:32,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2021-11-25 17:52:32,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 718. [2021-11-25 17:52:32,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 1.302649930264993) internal successors, (934), 717 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:32,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 934 transitions. [2021-11-25 17:52:32,398 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 934 transitions. Word has length 91 [2021-11-25 17:52:32,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:32,398 INFO L470 AbstractCegarLoop]: Abstraction has 718 states and 934 transitions. [2021-11-25 17:52:32,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:32,399 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 934 transitions. [2021-11-25 17:52:32,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-25 17:52:32,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:32,400 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:32,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 17:52:32,400 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:32,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:32,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1410131112, now seen corresponding path program 1 times [2021-11-25 17:52:32,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:32,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499140040] [2021-11-25 17:52:32,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:32,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:32,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:32,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499140040] [2021-11-25 17:52:32,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499140040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:32,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:32,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:52:32,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204238649] [2021-11-25 17:52:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:32,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:52:32,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:52:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:52:32,468 INFO L87 Difference]: Start difference. First operand 718 states and 934 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:33,833 INFO L93 Difference]: Finished difference Result 2719 states and 3599 transitions. [2021-11-25 17:52:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 17:52:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-11-25 17:52:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:33,842 INFO L225 Difference]: With dead ends: 2719 [2021-11-25 17:52:33,843 INFO L226 Difference]: Without dead ends: 2101 [2021-11-25 17:52:33,844 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:33,844 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 512 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:33,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:52:33,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2101 states. [2021-11-25 17:52:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2101 to 1048. [2021-11-25 17:52:34,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 1.2989493791786055) internal successors, (1360), 1047 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:34,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1360 transitions. [2021-11-25 17:52:34,494 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1360 transitions. Word has length 94 [2021-11-25 17:52:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:34,494 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1360 transitions. [2021-11-25 17:52:34,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1360 transitions. [2021-11-25 17:52:34,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 17:52:34,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:34,497 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:34,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 17:52:34,497 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:34,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:34,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1639937050, now seen corresponding path program 1 times [2021-11-25 17:52:34,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:34,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047220709] [2021-11-25 17:52:34,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:34,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:34,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:34,641 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:34,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047220709] [2021-11-25 17:52:34,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047220709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:34,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:34,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 17:52:34,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967901145] [2021-11-25 17:52:34,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:34,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 17:52:34,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:34,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 17:52:34,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-25 17:52:34,643 INFO L87 Difference]: Start difference. First operand 1048 states and 1360 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) [2021-11-25 17:52:35,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:35,364 INFO L93 Difference]: Finished difference Result 1998 states and 2612 transitions. [2021-11-25 17:52:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 17:52:35,364 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 [2021-11-25 17:52:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:35,370 INFO L225 Difference]: With dead ends: 1998 [2021-11-25 17:52:35,370 INFO L226 Difference]: Without dead ends: 1050 [2021-11-25 17:52:35,373 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:35,374 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 324 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:35,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 245 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-11-25 17:52:36,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1048. [2021-11-25 17:52:36,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 1047 states have (on average 1.2970391595033428) internal successors, (1358), 1047 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1358 transitions. [2021-11-25 17:52:36,073 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1358 transitions. Word has length 96 [2021-11-25 17:52:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:36,073 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1358 transitions. [2021-11-25 17:52:36,074 INFO L471 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) [2021-11-25 17:52:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1358 transitions. [2021-11-25 17:52:36,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-25 17:52:36,075 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:36,075 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:36,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 17:52:36,075 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:36,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:36,076 INFO L85 PathProgramCache]: Analyzing trace with hash 2055521500, now seen corresponding path program 1 times [2021-11-25 17:52:36,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:36,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802379167] [2021-11-25 17:52:36,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:36,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:36,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:36,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:36,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802379167] [2021-11-25 17:52:36,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802379167] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:36,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:36,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 17:52:36,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087336911] [2021-11-25 17:52:36,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:36,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 17:52:36,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:36,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 17:52:36,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 17:52:36,123 INFO L87 Difference]: Start difference. First operand 1048 states and 1358 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2021-11-25 17:52:37,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:37,038 INFO L93 Difference]: Finished difference Result 2230 states and 2920 transitions. [2021-11-25 17:52:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 17:52:37,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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 [2021-11-25 17:52:37,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:37,043 INFO L225 Difference]: With dead ends: 2230 [2021-11-25 17:52:37,044 INFO L226 Difference]: Without dead ends: 1282 [2021-11-25 17:52:37,045 INFO L932 BasicCegarLoop]: 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 [2021-11-25 17:52:37,045 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 64 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:37,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 182 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:37,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2021-11-25 17:52:37,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1280. [2021-11-25 17:52:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.2916340891321345) internal successors, (1652), 1279 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:37,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1652 transitions. [2021-11-25 17:52:37,877 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1652 transitions. Word has length 96 [2021-11-25 17:52:37,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:37,877 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1652 transitions. [2021-11-25 17:52:37,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 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) [2021-11-25 17:52:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1652 transitions. [2021-11-25 17:52:37,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-25 17:52:37,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:37,879 INFO L514 BasicCegarLoop]: 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] [2021-11-25 17:52:37,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 17:52:37,879 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:37,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:37,880 INFO L85 PathProgramCache]: Analyzing trace with hash 394598223, now seen corresponding path program 1 times [2021-11-25 17:52:37,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:37,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917435951] [2021-11-25 17:52:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:37,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:37,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:37,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917435951] [2021-11-25 17:52:37,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917435951] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:37,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:37,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:37,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560491697] [2021-11-25 17:52:37,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:37,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 17:52:37,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:37,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 17:52:37,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 17:52:37,972 INFO L87 Difference]: Start difference. First operand 1280 states and 1652 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:39,410 INFO L93 Difference]: Finished difference Result 1770 states and 2245 transitions. [2021-11-25 17:52:39,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 17:52:39,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-25 17:52:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:39,419 INFO L225 Difference]: With dead ends: 1770 [2021-11-25 17:52:39,419 INFO L226 Difference]: Without dead ends: 1768 [2021-11-25 17:52:39,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-25 17:52:39,420 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 263 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:39,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 757 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 17:52:39,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2021-11-25 17:52:40,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1280. [2021-11-25 17:52:40,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.272869429241595) internal successors, (1628), 1279 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:40,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1628 transitions. [2021-11-25 17:52:40,174 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1628 transitions. Word has length 97 [2021-11-25 17:52:40,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:40,175 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1628 transitions. [2021-11-25 17:52:40,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:40,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1628 transitions. [2021-11-25 17:52:40,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-25 17:52:40,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:40,176 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:40,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 17:52:40,176 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:40,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:40,177 INFO L85 PathProgramCache]: Analyzing trace with hash -2092320179, now seen corresponding path program 1 times [2021-11-25 17:52:40,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:40,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659828844] [2021-11-25 17:52:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:40,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:40,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 17:52:40,367 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:40,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659828844] [2021-11-25 17:52:40,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659828844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:40,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:40,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 17:52:40,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784034919] [2021-11-25 17:52:40,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:40,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 17:52:40,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:40,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 17:52:40,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-25 17:52:40,368 INFO L87 Difference]: Start difference. First operand 1280 states and 1628 transitions. Second operand has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:44,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:44,198 INFO L93 Difference]: Finished difference Result 5508 states and 7008 transitions. [2021-11-25 17:52:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 17:52:44,199 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-25 17:52:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:44,215 INFO L225 Difference]: With dead ends: 5508 [2021-11-25 17:52:44,215 INFO L226 Difference]: Without dead ends: 4314 [2021-11-25 17:52:44,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-25 17:52:44,219 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 1410 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:44,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1410 Valid, 728 Invalid, 828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:44,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2021-11-25 17:52:45,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 1288. [2021-11-25 17:52:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1287 states have (on average 1.2711732711732713) internal successors, (1636), 1287 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1636 transitions. [2021-11-25 17:52:45,052 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1636 transitions. Word has length 111 [2021-11-25 17:52:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:45,053 INFO L470 AbstractCegarLoop]: Abstraction has 1288 states and 1636 transitions. [2021-11-25 17:52:45,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.363636363636363) internal successors, (103), 10 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1636 transitions. [2021-11-25 17:52:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-25 17:52:45,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:45,055 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:45,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 17:52:45,055 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 68040231, now seen corresponding path program 1 times [2021-11-25 17:52:45,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:45,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194029315] [2021-11-25 17:52:45,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:45,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 17:52:45,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:45,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194029315] [2021-11-25 17:52:45,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194029315] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:45,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:45,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 17:52:45,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427240158] [2021-11-25 17:52:45,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:45,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 17:52:45,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:45,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 17:52:45,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-25 17:52:45,180 INFO L87 Difference]: Start difference. First operand 1288 states and 1636 transitions. Second operand has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:46,882 INFO L93 Difference]: Finished difference Result 3212 states and 4097 transitions. [2021-11-25 17:52:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 17:52:46,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-25 17:52:46,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:46,892 INFO L225 Difference]: With dead ends: 3212 [2021-11-25 17:52:46,893 INFO L226 Difference]: Without dead ends: 2018 [2021-11-25 17:52:46,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-25 17:52:46,896 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 306 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:46,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 325 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 17:52:46,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2021-11-25 17:52:47,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1280. [2021-11-25 17:52:47,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1280 states, 1279 states have (on average 1.2713057075840501) internal successors, (1626), 1279 states have internal predecessors, (1626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:47,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1280 states to 1280 states and 1626 transitions. [2021-11-25 17:52:47,743 INFO L78 Accepts]: Start accepts. Automaton has 1280 states and 1626 transitions. Word has length 112 [2021-11-25 17:52:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:47,743 INFO L470 AbstractCegarLoop]: Abstraction has 1280 states and 1626 transitions. [2021-11-25 17:52:47,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.0) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1280 states and 1626 transitions. [2021-11-25 17:52:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-25 17:52:47,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:47,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:47,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 17:52:47,745 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash 140746375, now seen corresponding path program 1 times [2021-11-25 17:52:47,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:47,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372615510] [2021-11-25 17:52:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:47,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:47,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-25 17:52:48,286 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:48,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372615510] [2021-11-25 17:52:48,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372615510] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:48,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:48,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-11-25 17:52:48,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132436989] [2021-11-25 17:52:48,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:48,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 17:52:48,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:48,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 17:52:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-25 17:52:48,288 INFO L87 Difference]: Start difference. First operand 1280 states and 1626 transitions. Second operand has 21 states, 21 states have (on average 5.0) internal successors, (105), 21 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:50,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:50,871 INFO L93 Difference]: Finished difference Result 3673 states and 4699 transitions. [2021-11-25 17:52:50,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 17:52:50,872 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 21 states have internal predecessors, (105), 0 states have call successors, (0), 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 113 [2021-11-25 17:52:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:50,879 INFO L225 Difference]: With dead ends: 3673 [2021-11-25 17:52:50,879 INFO L226 Difference]: Without dead ends: 2484 [2021-11-25 17:52:50,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=229, Invalid=1177, Unknown=0, NotChecked=0, Total=1406 [2021-11-25 17:52:50,883 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 380 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:50,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1807 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 17:52:50,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2021-11-25 17:52:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 1290. [2021-11-25 17:52:51,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1289 states have (on average 1.2699767261442978) internal successors, (1637), 1289 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1637 transitions. [2021-11-25 17:52:51,724 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1637 transitions. Word has length 113 [2021-11-25 17:52:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:51,725 INFO L470 AbstractCegarLoop]: Abstraction has 1290 states and 1637 transitions. [2021-11-25 17:52:51,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0) internal successors, (105), 21 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1637 transitions. [2021-11-25 17:52:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-25 17:52:51,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:51,726 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:51,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-25 17:52:51,726 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:51,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:51,727 INFO L85 PathProgramCache]: Analyzing trace with hash -837986061, now seen corresponding path program 1 times [2021-11-25 17:52:51,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:51,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309137196] [2021-11-25 17:52:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:51,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 17:52:51,778 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:51,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309137196] [2021-11-25 17:52:51,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309137196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 17:52:51,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 17:52:51,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 17:52:51,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664749070] [2021-11-25 17:52:51,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 17:52:51,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 17:52:51,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 17:52:51,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 17:52:51,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 17:52:51,781 INFO L87 Difference]: Start difference. First operand 1290 states and 1637 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:52,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 17:52:52,993 INFO L93 Difference]: Finished difference Result 2121 states and 2713 transitions. [2021-11-25 17:52:52,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 17:52:52,994 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-25 17:52:52,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 17:52:52,997 INFO L225 Difference]: With dead ends: 2121 [2021-11-25 17:52:52,998 INFO L226 Difference]: Without dead ends: 1290 [2021-11-25 17:52:52,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 17:52:53,000 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 142 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 17:52:53,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 133 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 17:52:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2021-11-25 17:52:53,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 919. [2021-11-25 17:52:53,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 918 states have (on average 1.2483660130718954) internal successors, (1146), 918 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1146 transitions. [2021-11-25 17:52:53,678 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1146 transitions. Word has length 114 [2021-11-25 17:52:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 17:52:53,678 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1146 transitions. [2021-11-25 17:52:53,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 17:52:53,678 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1146 transitions. [2021-11-25 17:52:53,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-25 17:52:53,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 17:52:53,679 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 17:52:53,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-25 17:52:53,680 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-11-25 17:52:53,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 17:52:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 821235352, now seen corresponding path program 1 times [2021-11-25 17:52:53,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 17:52:53,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834515421] [2021-11-25 17:52:53,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:53,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 17:52:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 17:52:57,276 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 17:52:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834515421] [2021-11-25 17:52:57,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834515421] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 17:52:57,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970393040] [2021-11-25 17:52:57,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 17:52:57,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 17:52:57,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 17:52:57,278 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 17:52:57,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1c11fe9-ec50-4fa2-b795-1789232b98ab/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 17:52:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 17:52:57,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-25 17:52:57,490 INFO L286 TraceCheckSpWp]: Computing forward predicates...